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;
}