Accounts for proxies:
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
$ip=$_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$ip=$_SERVER['REMOTE_ADDR'];
}
function get_suffix($number) {
$last_number = substr($number,-1); //fetch the last number
if($last_number == "0" || $last_number == 0){ $last_number = 4; } // if last number is 0 than it assign value 4
return date("S",mktime(0,0,0,1,$last_number,2009));
}Returns suffix of any number:
1 = st
2 = nd
3 = rd
4 = th
50 = th
Example: This is the 23rd coolest snippet ever.
function day_of_month( ) {
$number = date( 'j' );
if ( $number[( strlen( $number ) - 1 )] == 1 ) {
$suffix = "st";
} elseif ( $number[( strlen( $number ) - 1 )] == 2 ) {
$suffix = "nd";
} elseif ( $number[( strlen( $number ) - 1 )] == 3 ) {
$suffix = "rd";
} else {
$suffix = "th";
}
return array( "number" => $number, "suffix" => $suffix );
}
In jQuery, is there a function/plugin which I can use to match a given regular expression in a string?
Yes
/*
* @param string $file Filepath
* @param string $query Needed information (0 = width, 1 = height, 2 = mime-type)
* @return string Fileinfo
*/
function getImageinfo($file, $query) {
if (!realpath($file)) {
$file = $_SERVER["DOCUMENT_ROOT"].$file;
}
$image = getimagesize($file);
return $image[$query];
}
Requests a geo-IP-server to check, returns where an IP is located (host, state, country, town).
<?php
$ip='94.219.40.96';
print_r(geoCheckIP($ip));
//Array ( [domain] => dslb-094-219-040-096.pools.arcor-ip.net [country] => DE - Germany [state] => Hessen [town] => Erzhausen )
//Get an array with geoip-infodata
function geoCheckIP($ip)
{
//check, if the provided ip is valid
if(!filter_var($ip, FILTER_VALIDATE_IP))
{
throw new InvalidArgumentException("IP is not valid");
}
//contact ip-server
$response=@file_get_contents('http://www.netip.de/search?query='.$ip);
if (empty($response))
{
throw new InvalidArgumentException("Error contacting Geo-IP-Server");
}
//Array containing all regex-patterns necessary to extract ip-geoinfo from page
$patterns=array();
$patterns["domain"] = '#Domain: (.*?) #i';
$patterns["country"] = '#Country: (.*?) #i';
$patterns["state"] = '#State/Region: (.*?)<br#i';
$patterns["town"] = '#City: (.*?)<br#i';
//Array where results will be stored
$ipInfo=array();
//check response from ipserver for above patterns
foreach ($patterns as $key => $pattern)
{
//store the result in array
$ipInfo[$key] = preg_match($pattern,$response,$value) && !empty($value[1]) ? $value[1] : 'not found';
}
return $ipInfo;
}
?>
/*
* @param string $file Filepath
* @param int $digits Digits to display
* @return string|bool Size (KB, MB, GB, TB) or boolean
*/
function getFilesize($file,$digits = 2) {
if (is_file($file)) {
$filePath = $file;
if (!realpath($filePath)) {
$filePath = $_SERVER["DOCUMENT_ROOT"].$filePath;
}
$fileSize = filesize($filePath);
$sizes = array("TB","GB","MB","KB","B");
$total = count($sizes);
while ($total-- && $fileSize > 1024) {
$fileSize /= 1024;
}
return round($fileSize, $digits)." ".$sizes[$total];
}
return false;
}
/*
* @param string $file Filepath
* @param string $format dateformat
* @link http://www.php.net/manual/de/function.date.php
* @link http://www.php.net/manual/de/function.filemtime.php
* @return string|bool Date or Boolean
*/
function getFiledate($file, $format) {
if (is_file($file)) {
$filePath = $file;
if (!realpath($filePath)) {
$filePath = $_SERVER["DOCUMENT_ROOT"].$filePath;
}
$fileDate = filemtime($filePath);
if ($fileDate) {
$fileDate = date("$format",$fileDate);
return $fileDate;
}
return false;
}
return false;
}
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://feedburner.google.com/api/awareness/1.0/GetFeedData?id=7qkrmib4r9rscbplq5qgadiiq4');
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,2);
$content = curl_exec($ch);
$subscribers = get_match('/circulation="(.*)"/isU',$content);
curl_close($ch);The $subscribers variable will then be your subscriber count, for echoing out (or whatever). You'll need to replace the ID at the end of the second line with your feed's ID (find it). You'll also need to have the Awareness feature of FeedBurner enabled.
function getUrl() {
$url = @( $_SERVER["HTTPS"] != 'on' ) ? 'http://'.$_SERVER["SERVER_NAME"] : 'https://'.$_SERVER["SERVER_NAME"];
$url .= ( $_SERVER["SERVER_PORT"] !== 80 ) ? ":".$_SERVER["SERVER_PORT"] : "";
$url .= $_SERVER["REQUEST_URI"];
return $url;
}
<?php
$pageName = basename($_SERVER['PHP_SELF']);
?><body id="body_<?php echo $pageName; ?>">Append ID to body to do different CSS styles on different pages.
<?php
$handle=@mysql_connect("localhost","root","");
if (!$handle)
{
die("No connection to database");
}
echo 'Total number of all-time mysql-queries: '.getTotalNumberOfMySQLQuerys();
//Returns integer-value of the total number of alltime mysql-calls that have been made
function getTotalNumberOfMySQLQuerys()
{
//global mysql-status containing the number of querys has been renamed in newer versions of mysql
$mysqlVersion=getMysqlVersion();
//contact helper-function to receive the mysql-version
if ($mysqlVersion()>=50002)
{
$sql="SHOW GLOBAL STATUS LIKE 'Questions'";
}
else
{
$sql="SHOW STATUS LIKE 'Questions'";
}
$result=@mysql_query( $sql );
$row=@mysql_fetch_array( $result );
return $row['Value'];
}
//helper function is needed to detect the exact mysql-version
function getMysqlVersion()
{
$sql = 'SELECT VERSION() AS versionsinfo';
$result = @mysql_query('SELECT VERSION() AS versionsinfo');
$version = @mysql_result( $result, 0, "versionsinfo" );
$match = explode('.',$version);
return sprintf('%d%02d%02d',$match[0],$match[1],intval($match[2]));
}
?>Because the name of the global mysql-status-variable containing the number of queries changed in later versions of mysql, a helper-function is needed to detect the exact version of mysql you're running.
You don't have to make files on Amazon S3 public (they aren't by default). But you can generate special keys to allow access to private files. These keys are passed through the URL and can be made to expire.
<?php
if(!function_exists('el_crypto_hmacSHA1')){
/**
* Calculate the HMAC SHA1 hash of a string.
*
* @param string $key The key to hash against
* @param string $data The data to hash
* @param int $blocksize Optional blocksize
* @return string HMAC SHA1
*/
function el_crypto_hmacSHA1($key, $data, $blocksize = 64) {
if (strlen($key) > $blocksize) $key = pack('H*', sha1($key));
$key = str_pad($key, $blocksize, chr(0x00));
$ipad = str_repeat(chr(0x36), $blocksize);
$opad = str_repeat(chr(0x5c), $blocksize);
$hmac = pack( 'H*', sha1(
($key ^ $opad) . pack( 'H*', sha1(
($key ^ $ipad) . $data
))
));
return base64_encode($hmac);
}
}
if(!function_exists('el_s3_getTemporaryLink')){
/**
* Create temporary URLs to your protected Amazon S3 files.
*
* @param string $accessKey Your Amazon S3 access key
* @param string $secretKey Your Amazon S3 secret key
* @param string $bucket The bucket (bucket.s3.amazonaws.com)
* @param string $path The target file path
* @param int $expires In minutes
* @return string Temporary Amazon S3 URL
* @see http://awsdocs.s3.amazonaws.com/S3/20060301/s3-dg-20060301.pdf
*/
function el_s3_getTemporaryLink($accessKey, $secretKey, $bucket, $path, $expires = 5) {
// Calculate expiry time
$expires = time() + intval(floatval($expires) * 60);
// Fix the path; encode and sanitize
$path = str_replace('%2F', '/', rawurlencode($path = ltrim($path, '/')));
// Path for signature starts with the bucket
$signpath = '/'. $bucket .'/'. $path;
// S3 friendly string to sign
$signsz = implode("\n", $pieces = array('GET', null, null, $expires, $signpath));
// Calculate the hash
$signature = el_crypto_hmacSHA1($secretKey, $signsz);
// Glue the URL ...
$url = sprintf('http://%s.s3.amazonaws.com/%s', $bucket, $path);
// ... to the query string ...
$qs = http_build_query($pieces = array(
'AWSAccessKeyId' => $accessKey,
'Expires' => $expires,
'Signature' => $signature,
));
// ... and return the URL!
return $url.'?'.$qs;
}
}
?><?php echo el_s3_getTemporaryLink('your-access-key', 'your-secret-key', 'bucket-name', '/path/to/file.mov'); ?>
function generateCsv($data, $delimiter = ',', $enclosure = '"') {
$handle = fopen('php://temp', 'r+');
foreach ($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
}$data = array(
array(1, 2, 4),
array('test string', 'test, literal, comma', 'test literal "quotes"'),
);
echo generateCsv($data);
// outputs:
// 1,2,4
// "test string","test, literal, comma","test literal""quote"""
<?php
function forceLeadingZero($int) {
return (int)sprintf('%02d',$int);
}
?>Forces leading zero to integers.
was | now
1 | 01
2 | 02
3 | 03
10 | 10
100 | 100
99 | 99
<?php
// The Regular Expression filter
$reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
// The Text you want to filter for urls
$text = "The text you want to filter goes here. http://google.com";
// Check if there is a url in the text
if(preg_match($reg_exUrl, $text, $url)) {
// make the urls hyper links
echo preg_replace($reg_exUrl, "<a href="{$url[0]}">{$url[0]}</a> ", $text);
} else {
// if no urls in the text just return the text
echo $text;
}
?>The basic function of this is to find any URLs in the block of text and turn them into hyperlinks. It will only find URLs if they are properly formatted, meaning they have a http, https, ftp or ftps.
Check out the comments below for more solutions.
<?php
echo dirname(__FILE__);
?>You'd might be surprised what shows up. Sometimes you need more than just /lots/of/folders/ as your full path to a file (e.g. .htpasswd). This script will allow you to see that.
$latest = getNewest("/path/to/folder/*_bla.xml");
function getNewest($xmlfile){
foreach (glob($xmlfile) as $filename) {
$c = explode('_', basename($filename));
$files[$c[0]] = $filename;
}
ksort($files, SORT_NUMERIC);
$latest = array_pop($files);
if (file_exists($latest)){
return $latest;
}
return false;
}In a folder are files named:
1_bla.xml
2_bla.xml
...
34_bla.xml
The function returns the file with the biggest numeric number:
$latest = "/path/to/folder/34_bla.xml";
function findexts ($filename) {
$filename = strtolower($filename) ;
$exts = split("[/\\.]", $filename) ;
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}$filename = 'mypic.gif';
$ext = pathinfo($filename, PATHINFO_EXTENSION);function getFileextension($file) {
return end(explode(".", $file));
}
Here's the basic principal behind spiders.
$html = file_get_contents('http://www.example.com');
$dom = new DOMDocument();
@$dom->loadHTML($html);
// grab all the on the page
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");
for ($i = 0; $i < $hrefs->length; $i++) {
$href = $hrefs->item($i);
$url = $href->getAttribute('href');
echo $url.'<br />';
}
Just pass the string (e.g. the body part of an email) to the function, and it returns an array of Email Addresses contained in the String.
function extract_emails_from($string) {
preg_match_all("/[\._a-zA-Z0-9-]+@[\._a-zA-Z0-9-]+/i", $string, $matches);
return $matches[0];
}If you catch the return value of function in $emails, you can parse it using foreach:
foreach($emails as $email) {
echo trim($email).'<br/>';
}
This is a way to make a single error page for all errors, which is easier to update and maintain.
ErrorDocument 400 /error.php
ErrorDocument 401 /error.php
ErrorDocument 403 /error.php
ErrorDocument 404 /error.php
ErrorDocument 500 /error.php
etc.$status = $_SERVER['REDIRECT_STATUS'];
$codes = array(
403 => array('403 Forbidden', 'The server has refused to fulfill your request.'),
404 => array('404 Not Found', 'The document/file requested was not found on this server.'),
405 => array('405 Method Not Allowed', 'The method specified in the Request-Line is not allowed for the specified resource.'),
408 => array('408 Request Timeout', 'Your browser failed to send a request in the time allowed by the server.'),
500 => array('500 Internal Server Error', 'The request was unsuccessful due to an unexpected condition encountered by the server.'),
502 => array('502 Bad Gateway', 'The server received an invalid response from the upstream server while trying to fulfill the request.'),
504 => array('504 Gateway Timeout', 'The upstream server failed to send a request in the time allowed by the server.'),
);
$title = $codes[$status][0];
$message = $codes[$status][1];
if ($title == false || strlen($status) != 3) {
$message = 'Please supply a valid status code.';
}
// Insert headers here
echo '<h1>'.$title.'</h1>
<p>'.$message.'</p>';
// Insert footer here
Just type in the time you want converted to seconds in english (e.g. "1 hour and 30 minutes") and it will be converted to an integer of seconds (e.g. 5400). Thanks to Baylor Rae.
function time2seconds($time) {
preg_match_all('/(\d+ [a-z]+)/', $time, $matches);
$matches = $matches[0];
$formats = array();
foreach ($matches as $format) {
preg_match('/(\d+)\s?([a-z]+)/', $format, $f);
$time = $f[1];
$type = $f[2];
$formats[$type] = $time;
}
$output = array(
'years' => 0,
'months' => 0,
'days' => 0,
'hours' => 0,
'minutes' => 0,
'seconds' => 0
);
foreach ($formats as $format => $time) {
if( $time == 0 )
continue;
switch ($format) {
case 'year' :
case 'years' :
$output['years'] = $time * 12 * 30 * 24 * 60 * 60;
break;
case 'month' :
case 'months' :
$output['months'] = $time * 30 * 24 * 60 * 60;
break;
case 'day' :
case 'days' :
$output['days'] = $time * 24 * 60 * 60;
break;
case 'hour' :
case 'hours' :
$output['hours'] = $time * 60 * 60;
break;
case 'minute' :
case 'minutes' :
$output['minutes'] = $time * 60;
break;
case 'second' :
case 'seconds' :
$output['seconds'] = $time;
break;
}
}
return $output['years'] + $output['months'] + $output['days'] + $output['hours'] + $output['minutes'] + $output['seconds'];
}Form submits "time":
<form method="post">
<label for="time">Time</label><br />
<input type="text" name="time" id="time" size="50" value="<?php echo (isset($_POST['time'])) ? $_POST['time'] : '1 hour 30 minutes' ?>" />
<button name="submit">Test!</button>
</form>If "time" is set, use the function and echo what is returned:
if (isset($_POST)) {
echo time2seconds($_POST['time']);
}
<?php
function php_split_js_make_email($phpemail)
{
$pieces = explode("@", $phpemail);
echo '
<script type="text/javascript">
var a = "<a href=\'mailto:";
var b = "' . $pieces[0] . '";
var c = "' . $pieces[1] .'";
var d = "\' class=\'email\'>";
var e = "</a>";
document.write(a+b+"@"+c+d+b+"@"+c+e);
</script>
<noscript>Please enable JavaScript to view emails</noscript>
';
}
?><?php php_split_js_make_email("youremail@here.com"); ?>
$email = 'mail@example.com';
$validation = filter_var($email, FILTER_VALIDATE_EMAIL);
if ( $validation ) $output = 'proper email address';
else $output = 'wrong email address';
echo $output;This function doesn't only check if the format of the given email address is correct, it also performs a test if the host is existing.
<?php
$email="test@geemail.com";
if (isValidEmail($email))
{
echo "Hooray! Adress is correct.";
}
else
{
echo "Sorry! No way.";
}
//Check-Function
function isValidEmail($email)
{
//Perform a basic syntax-Check
//If this check fails, there's no need to continue
if(!filter_var($email, FILTER_VALIDATE_EMAIL))
{
return false;
}
//extract host
list($user, $host) = explode("@", $email);
//check, if host is accessible
if (!checkdnsrr($host, "MX") && !checkdnsrr($host, "A"))
{
return false;
}
return true;
}
?>function checkEmail($email) {
if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/",$email))
{
return true;
}
return false;
}The above, with domain name validation:
function checkEmail($email) {
if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/",$email))
{
list($username,$domain)=split('@',$email);
if(!checkdnsrr($domain,'MX')) {
return false;
}
return true;
}
return false;
}
Servers can be configured to show the contents of a directory that doesn't have an index file to render. The result is usually less than visually spectacular:
Lackluster default in Chrome More better, View DemoWe can take control of this ourselves by replicating this functionality with PHP.
Make an index file (.index.php, starting with the dot, really) which reads the files in the directory and outputs them into a table
Make an .htaccess file that serves that file as the index
Have the index file load in CSS and other resources that are also prefixed with a dot (hidden)
The following PHP reads the directory of files and displays a styled table of their name, file type, and file size. It also applies a class name in which to apply icons for the different major file types (see CSS).
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Directory Contents</title>
<link rel="stylesheet" href=".style.css">
<script src=".sorttable.js"></script>
</head>
<body>
<div id="container">
<h1>Directory Contents</h1>
<table class="sortable">
<thead>
<tr>
<th>Filename</th>
<th>Type</th>
<th>Size <small>(bytes)</small></th>
<th>Date Modified</th>
</tr>
</thead>
<tbody>
<?php
// Opens directory
$myDirectory=opendir(".");
// Gets each entry
while($entryName=readdir($myDirectory)) {
$dirArray[]=$entryName;
}
// Finds extensions of files
function findexts ($filename) {
$filename=strtolower($filename);
$exts=split("[/\\.]", $filename);
$n=count($exts)-1;
$exts=$exts[$n];
return $exts;
}
// Closes directory
closedir($myDirectory);
// Counts elements in array
$indexCount=count($dirArray);
// Sorts files
sort($dirArray);
// Loops through the array of files
for($index=0; $index < $indexCount; $index++) {
// Allows ./?hidden to show hidden files
if($_SERVER['QUERY_STRING']=="hidden")
{$hide="";
$ahref="./";
$atext="Hide";}
else
{$hide=".";
$ahref="./?hidden";
$atext="Show";}
if(substr("$dirArray[$index]", 0, 1) != $hide) {
// Gets File Names
$name=$dirArray[$index];
$namehref=$dirArray[$index];
// Gets Extensions
$extn=findexts($dirArray[$index]);
// Gets file size
$size=number_format(filesize($dirArray[$index]));
// Gets Date Modified Data
$modtime=date("M j Y g:i A", filemtime($dirArray[$index]));
$timekey=date("YmdHis", filemtime($dirArray[$index]));
// Prettifies File Types, add more to suit your needs.
switch ($extn){
case "png": $extn="PNG Image"; break;
case "jpg": $extn="JPEG Image"; break;
case "svg": $extn="SVG Image"; break;
case "gif": $extn="GIF Image"; break;
case "ico": $extn="Windows Icon"; break;
case "txt": $extn="Text File"; break;
case "log": $extn="Log File"; break;
case "htm": $extn="HTML File"; break;
case "php": $extn="PHP Script"; break;
case "js": $extn="Javascript"; break;
case "css": $extn="Stylesheet"; break;
case "pdf": $extn="PDF Document"; break;
case "zip": $extn="ZIP Archive"; break;
case "bak": $extn="Backup File"; break;
default: $extn=strtoupper($extn)." File"; break;
}
// Separates directories
if(is_dir($dirArray[$index])) {
$extn="<Directory>";
$size="<Directory>";
$class="dir";
} else {
$class="file";
}
// Cleans up . and .. directories
if($name=="."){$name=". (Current Directory)"; $extn="<System Dir>";}
if($name==".."){$name=".. (Parent Directory)"; $extn="<System Dir>";}
// Print 'em
print("
<tr class='$class'>
<td><a href='./$namehref'>$name</a></td>
<td><a href='./$namehref'>$extn</a></td>
<td><a href='./$namehref'>$size</a></td>
<td sorttable_customkey='$timekey'><a href='./$namehref'>$modtime</a></td>
</tr>");
}
}
?>
</tbody>
</table>
<h2><?php print("<a href='$ahref'>$atext hidden files</a>"); ?></h2>
</div>
</body>
</html>The resources loaded in that index file are the top-in table sorter script sortable.js and a .style.css file. (Remember, prefacing the files with a dot makes the invisible in most operating systems, and also won't show up in your directory of files (good)). Here's that CSS:
* {
padding:0;
margin:0;
}
body {
color: #333;
font: 14px Sans-Serif;
padding: 50px;
background: #eee;
}
h1 {
text-align: center;
padding: 20px 0 12px 0;
margin: 0;
}
h2 {
font-size: 16px;
text-align: center;
padding: 0 0 12px 0;
}
#container {
box-shadow: 0 5px 10px -5px rgba(0,0,0,0.5);
position: relative;
background: white;
}
table {
background-color: #F3F3F3;
border-collapse: collapse;
width: 100%;
margin: 15px 0;
}
th {
background-color: #FE4902;
color: #FFF;
cursor: pointer;
padding: 5px 10px;
}
th small {
font-size: 9px;
}
td, th {
text-align: left;
}
a {
text-decoration: none;
}
td a {
color: #663300;
display: block;
padding: 5px 10px;
}
th a {
padding-left: 0
}
td:first-of-type a {
background: url(./.images/file.png) no-repeat 10px 50%;
padding-left: 35px;
}
th:first-of-type {
padding-left: 35px;
}
td:not(:first-of-type) a {
background-image: none !important;
}
tr:nth-of-type(odd) {
background-color: #E6E6E6;
}
tr:hover td {
background-color:#CACACA;
}
tr:hover td a {
color: #000;
}
/* icons for file types (icons by famfamfam) */
/* images */
table tr td:first-of-type a[href$=".jpg"],
table tr td:first-of-type a[href$=".png"],
table tr td:first-of-type a[href$=".gif"],
table tr td:first-of-type a[href$=".svg"],
table tr td:first-of-type a[href$=".jpeg"]
{background-image: url(./.images/image.png);}
/* zips */
table tr td:first-of-type a[href$=".zip"]
{background-image: url(./.images/zip.png);}
/* css */
table tr td:first-of-type a[href$=".css"]
{background-image: url(./.images/css.png);}
/* docs */
table tr td:first-of-type a[href$=".doc"],
table tr td:first-of-type a[href$=".docx"],
table tr td:first-of-type a[href$=".ppt"],
table tr td:first-of-type a[href$=".pptx"],
table tr td:first-of-type a[href$=".pps"],
table tr td:first-of-type a[href$=".ppsx"],
table tr td:first-of-type a[href$=".xls"],
table tr td:first-of-type a[href$=".xlsx"]
{background-image: url(./.images/office.png)}
/* videos */
table tr td:first-of-type a[href$=".avi"],
table tr td:first-of-type a[href$=".wmv"],
table tr td:first-of-type a[href$=".mp4"],
table tr td:first-of-type a[href$=".mov"],
table tr td:first-of-type a[href$=".m4a"]
{background-image: url(./.images/video.png);}
/* audio */
table tr td:first-of-type a[href$=".mp3"],
table tr td:first-of-type a[href$=".ogg"],
table tr td:first-of-type a[href$=".aac"],
table tr td:first-of-type a[href$=".wma"]
{background-image: url(./.images/audio.png);}
/* web pages */
table tr td:first-of-type a[href$=".html"],
table tr td:first-of-type a[href$=".htm"],
table tr td:first-of-type a[href$=".xml"]
{background-image: url(./.images/xml.png);}
table tr td:first-of-type a[href$=".php"]
{background-image: url(./.images/php.png);}
table tr td:first-of-type a[href$=".js"]
{background-image: url(./.images/script.png);}
/* directories */
table tr.dir td:first-of-type a
{background-image: url(./.images/folder.png);}REMEMBER: The .zip file might appear to be empty, but it's not. The files are all prefaced with a dot. View them in a file editor which shows you "hidden" files.
Special thanks to Cliff White.
<?php
//get cool feedburner count
$whaturl="http://api.feedburner.com/awareness/1.0/GetFeedData?uri=your feedburner id";
//Initialize the Curl session
$ch = curl_init();
//Set curl to return the data instead of printing it to the browser.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//Set the URL
curl_setopt($ch, CURLOPT_URL, $whaturl);
//Execute the fetch
$data = curl_exec($ch);
//Close the connection
curl_close($ch);
$xml = new SimpleXMLElement($data);
$fb = $xml->feed->entry['circulation'];
echo $fb;
//end get cool feedburner count
?>Replace "your feedburner id" with your actual FeedBurner ID. Also, make sure your "Awareness API" is turned on in your FeedBurner settings for the particular feed you are pulling from.
echo '<pre>';
print_r ($_POST);
echo '</pre>';
<?php
$gravatar_link = 'http://www.gravatar.com/avatar/' . md5($comment_author_email) . '?s=32';
echo '<img src="' . $gravatar_link . '" />';
?>The variable "$comment_author_email" would be a string of a valid email address. If the email isn't in the Gravatar database, it will return a default graphic. "$comment_author_email" is the default WordPress variable that populates from a cookie for people who have previously commented (if the theme supports it).
This is a completely styled page which displays meta tag information it pulls from provided URLs. Change the URL's at the top of the code to change the websites it gathers the information from.
<?php $searchmeta1 = get_meta_tags("http://northstarmediainc.com"); ?>
<?php $searchmeta2 = get_meta_tags("http://thecouponmagazine.com"); ?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Meta Tag Finder</title>
<style>
*{
margin:0;
padding:0;
outline:0;
border:0;
}
html{min-height:100%; height:auto;}
body{
background:#FFF;
font-size:12px;
font-family:verdana, arial, sans-serif;
color:000;
}
a{
text-decoration:none;
color:#999;
}
a:hover{
color:#666;
}
#container{
width:900px;
margin:0 auto;
}
h1{
font-weight:bold;
font-size:20px;
text-align:center;
padding:14px;
letter-spacing:1.5;
font-family: georgia, Sans-Serif;
border-bottom:1px dashed #666;
margin-bottom:20px;
}
h2{
font-weight:normal;
font-size:16px;
padding-top:10px;
}
h3{
font-weight:boldl;
font-size:14px;
text-align:center;
padding-bottom:10px;
font-style:italic;
}
#left{
float:left;
width:430px;
padding-bottom:40px;
}
#right{
float:right;
width:430px;
padding-bottom:40px;
}
.box1{
display:block;
height:70px;
color:#FFF;
background-color:#EF810E;
margin:10px;
padding:10px;
border:1px solid #CF6B00;
border-radius:10px;
-moz-border-radius:10px;
-webkit-border-radius:10px;
box-shadow: 10px 10px 5px #888;
}
.box2{
display:block;
height:70px;
color:#FFF;
background-color:#5C66FF;
margin:10px;
padding:10px;
border:1px solid #3340CF;
border-radius:10px;
-moz-border-radius:10px;
-webkit-border-radius:10px;
}
</style>
</head>
<body>
<div id="container">
<h1>Meta Tag Finder</h1>
<div id="left">
<h3>NorthStar Media</h3>
<h2>Author:</h2>
<div class="box1">
<?php echo ($searchmeta1["author"]); ?>
</div>
<h2>Copyright:</h2>
<div class="box1">
<?php echo ($searchmeta1["copyright"]); ?>
</div>
<h2>Description:</h2>
<div class="box1">
<?php echo ($searchmeta1["description"]); ?>
</div>
<h2>Keywords:</h2>
<div class="box1">
<?php echo ($searchmeta1["keywords"]); ?>
</div>
<h2>Robots:</h2>
<div class="box1">
<?php echo ($searchmeta1["robots"]); ?>
</div>
<h2>Generator:</h2>
<div class="box1">
<?php echo ($searchmeta1["generator"]); ?>
</div>
</div>
<div id="right">
<h3>The Coupon Magazine</h3>
<h2>Author:</h2>
<div class="box2">
<?php echo ($searchmeta2["author"]); ?>
</div>
<h2>Copyright:</h2>
<div class="box2">
<?php echo ($searchmeta2["copyright"]); ?>
</div>
<h2>Description:</h2>
<div class="box2">
<?php echo ($searchmeta2["description"]); ?>
</div>
<h2>Keywords:</h2>
<div class="box2">
<?php echo ($searchmeta2["keywords"]); ?>
</div>
<h2>Robots:</h2>
<div class="box2">
<?php echo ($searchmeta2["robots"]); ?>
</div>
<h2>Generator:</h2>
<div class="box2">
<?php echo ($searchmeta2["generator"]); ?>
</div>
</div>
</div>
</body>
</html>
Returns "City, State" if found otherwise the default set at the top.
function detect_city($ip) {
$default = 'UNKNOWN';
if (!is_string($ip) || strlen($ip) < 1 || $ip == '127.0.0.1' || $ip == 'localhost')
$ip = '8.8.8.8';
$curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
$url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
$ch = curl_init();
$curl_opt = array(
CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $curlopt_useragent,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'],
);
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) {
$curl_info = curl_getinfo($ch);
}
curl_close($ch);
if ( preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs) ) {
$city = $regs[1];
}
if ( preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs) ) {
$state = $regs[1];
}
if( $city!='' && $state!='' ){
$location = $city . ', ' . $state;
return $location;
}else{
return $default;
}
}
function getMSIE6() {
$userAgent = strtolower($_SERVER["HTTP_USER_AGENT"]);
if (ereg("msie 6", $userAgent) || ereg("msie 5", $userAgent)) {
return true;
}
return false;
}
The HTTP_X_REQUESTED_WITH header is sent by all recent browsers that support AJAX requests.
if ( !empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest' )
{
# Ex. check the query and serve requested data
}
This snippet displays a nice list of all submitted data in a transparent box on the top left. Put this snippet preferable directly after <body>.
The box has some basic styling applied so that it will display a dark fixed box on the top left of the document that will automaticly show a scroll-bar if it becomes too long.
<div style="position:fixed; top:0; left: 0; width: 400px; background: rgb(0,0,0,0); background: rgba(0,0,0,0.8); color: green; margin:0px; padding:5px; max-height: 90%; overflow-y:auto;">
<h2 style="margin:0px;color:white;">$ HEADERS:</h2>
<h3 style="margin:5px;color:white;">GET</h3>
<?php
//var_dump($_GET);
foreach($_GET as $name=>$value) {
echo $name." => ";
echo $value."<br />";
}
?>
<h3 style="margin:5px;color:white;">POST</h3>
<?php
//var_dump($_POST);
foreach($_POST as $name=>$value) {
echo $name." => ";
echo $value."<br />";
}
?></div>
When you do an AJAX request on a website, the URL you request from needs to reside on the same domain as where the request was made from. This is a security restriction imposed by the browser. There is a way to sneak around this by using a bit of a "man in the middle" approach.
PHP, being a server-side language, has the ability to pull content from any URL. So a PHP file can become the man in the middle. The contents of the PHP file can be set up to accept a URL as a parameter and then return the contents of that URL.
<?php
echo file_get_contents($_GET['url']);
// WARNING: You REALLY should write something to whitelist or otherwise limit what the function will accept, or it could be a security danger to your server (people could read any file).
?>With that in place, we can do an AJAX request directly to that URL, passing it the URL we actually want the data from as a parameter. See how we are passing "http://google.com" as data below.
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js?ver=1.3.2'></script>
<script type='text/javascript'>
$(function() {
$.ajax({
type: "GET",
dataType: 'html',
data: 'url=http://google.com',
url: 'get.php',
success: function(data){
// Yah! Do something cool with data
},
error: function(){
// Boo! Handle the error.
}
});
});
</script>This is an extremely simple example. If you are interested in a more robust version, check out the Simple PHP Proxy.
Displays a selected chunk of an image. In the example provided, the upper left 100px x 100px are shown.
<?php
$filename= "test.jpg";
list($w, $h, $type, $attr) = getimagesize($filename);
$src_im = imagecreatefromjpeg($filename);
$src_x = '0'; // begin x
$src_y = '0'; // begin y
$src_w = '100'; // width
$src_h = '100'; // height
$dst_x = '0'; // destination x
$dst_y = '0'; // destination y
$dst_im = imagecreatetruecolor($src_w, $src_h);
$white = imagecolorallocate($dst_im, 255, 255, 255);
imagefill($dst_im, 0, 0, $white);
imagecopy($dst_im, $src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h);
header("Content-type: image/png");
imagepng($dst_im);
imagedestroy($dst_im);
?>
Regular expression function that replaces spaces between words with hyphens.
<?php
function create_slug($string){
$slug=preg_replace('/[^A-Za-z0-9-]+/', '-', $string);
return $slug;
}
echo create_slug('does this thing work or not');
//returns 'does-this-thing-work-or-not'
?>
function MakeUnique($length=16) {
$salt = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$len = strlen($salt);
$makepass = '';
mt_srand(10000000*(double)microtime());
for ($i = 0; $i < $length; $i++) {
$makepass .= $salt[mt_rand(0,$len - 1)];
}
return $makepass;
}
These can be useful for embedding images into HTML/CSS/JS to save on HTTP requests, at the cost of maintainability. More information. There are online tools to do it, but if you want your own very simple utility, here's some PHP to do it:
function data_uri($file, $mime) {
$contents=file_get_contents($file);
$base64=base64_encode($contents);
echo "data:$mime;base64,$base64";
}
$execution_time = microtime(); # Start counting
# Your code
$execution_time = microtime() - $execution_time;
$execution_time = sprintf('It took %.5f sec', $execution_time);
Give function hex code (e.g. #eeeeee), returns array of RGB values.
function hex2rgb( $colour ) {
if ( $colour[0] == '#' ) {
$colour = substr( $colour, 1 );
}
if ( strlen( $colour ) == 6 ) {
list( $r, $g, $b ) = array( $colour[0] . $colour[1], $colour[2] . $colour[3], $colour[4] . $colour[5] );
} elseif ( strlen( $colour ) == 3 ) {
list( $r, $g, $b ) = array( $colour[0] . $colour[0], $colour[1] . $colour[1], $colour[2] . $colour[2] );
} else {
return false;
}
$r = hexdec( $r );
$g = hexdec( $g );
$b = hexdec( $b );
return array( 'red' => $r, 'green' => $g, 'blue' => $b );
}
Easy way to turn a CSV file into a parseable array.
<?php
$str="foo,bar,baz,bat";
$arr=explode(",",$str);
// print_r($arr);
?>
function br2newline( $input ) {
$out = str_replace( "<br>", "\n", $input );
$out = str_replace( "<br/>", "\n", $out );
$out = str_replace( "<br />", "\n", $out );
$out = str_replace( "<BR>", "\n", $out );
$out = str_replace( "<BR/>", "\n", $out );
$out = str_replace( "<BR />", "\n", $out );
return $out;
}Converts a break tag to a newline - no matter what kind of HTML is being processed.
function br2nl( $input ) {
return preg_replace('/<br(\s+)?\/?>/i', "\n", $input);
}
For instance, if you want to use a string as part of a URL but need to make it safe for that kind of use.
function replace_accents($str) {
$str = htmlentities($str, ENT_COMPAT, "UTF-8");
$str = preg_replace('/&([a-zA-Z])(uml|acute|grave|circ|tilde);/','$1',$str);
return html_entity_decode($str);
}
<?php
/*
This code by Chris Coyier
*/
$i = 0; // counter to be used later;
?>Comments in PHP can be between /* */ markings (useful for multiple line comments) or after // markings (for single lines only).
Variables that are submitted via web forms always need to be cleaned/sanitized before use in any way, to prevent against all kinds of different malicious intent.
function clean($value) {
// If magic quotes not turned on add slashes.
if(!get_magic_quotes_gpc())
// Adds the slashes.
{ $value = addslashes($value); }
// Strip any tags from the value.
$value = strip_tags($value);
// Return the value out of the function.
return $value;
}$sample = "<a href='#'>test</a>";
$sample = clean($sample);
echo $sample;
Performs a cURL-Request to check, if a website exists / is online
<?php
if (isDomainAvailible('http://www.css-tricks.com'))
{
echo "Up and running!";
}
else
{
echo "Woops, nothing found there.";
}
//returns true, if domain is availible, false if not
function isDomainAvailible($domain)
{
//check, if a valid url is provided
if(!filter_var($domain, FILTER_VALIDATE_URL))
{
return false;
}
//initialize curl
$curlInit = curl_init($domain);
curl_setopt($curlInit,CURLOPT_CONNECTTIMEOUT,10);
curl_setopt($curlInit,CURLOPT_HEADER,true);
curl_setopt($curlInit,CURLOPT_NOBODY,true);
curl_setopt($curlInit,CURLOPT_RETURNTRANSFER,true);
//get answer
$response = curl_exec($curlInit);
curl_close($curlInit);
if ($response) return true;
return false;
}
?><?php
function Visit($url){
$agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";$ch=curl_init();
curl_setopt ($ch, CURLOPT_URL,$url );
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch,CURLOPT_VERBOSE,false);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch,CURLOPT_SSLVERSION,3);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, FALSE);
$page=curl_exec($ch);
//echo curl_error($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if($httpcode>=200 && $httpcode<300) return true;
else return false;
}
if (Visit("http://www.google.com"))
echo "Website OK"."n";
else
echo "Website DOWN";
?><?php
ini_set("default_socket_timeout","05");
set_time_limit(5);
$f=fopen("http://www.css-tricks.com","r");
$r=fread($f,1000);
fclose($f);
if(strlen($r)>1) {
echo("<span class='online'>Online</span>");
}
else {
echo("<span class='offline'>Offline</span>");
}
?>
If the file name exists, returns new file name with _number appended so you don't overwrite it.
function file_newname($path, $filename){
if ($pos = strrpos($filename, '.')) {
$name = substr($filename, 0, $pos);
$ext = substr($filename, $pos);
} else {
$name = $filename;
}
$newpath = $path.'/'.$filename;
$newname = $filename;
$counter = 0;
while (file_exists($newpath)) {
$newname = $name .'_'. $counter . $ext;
$newpath = $path.'/'.$newname;
$counter++;
}
return $newname;
}myfile.jpg
myfile_0.jpg
myfile_1.jpg