note 58505 deleted from function.preg-match by colder
| From: | colder@php.net | Date: | Mon, 18 Jun 2007 18:27:47 +0000 |
| Subject: | note 58505 deleted from function.preg-match by colder | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-127615@lists.php.net to get a copy of this message | ||
Note Submitter: max99x [at] gmail [dot] com
----
Here's an improvement on the URL detecting function written by [rickyale at ig dot com dot br].
It detects SRC, HREF and URL links, in addition to URLs in CSS code, and Javascript imports. It also
understands html entities(such as &) inside URLs.
<?php
function get_links($url) {
if( !($body = @file_get_contents($url)) ) return FALSE;
//Pattern building across multiple lines to avoid page distortion.
$pattern =
"/((@import\s+[\"'
]([\w:?=@&\/#._;-]+)[\"'];)|";
$pattern .= "(:\s*url\s*\([\s\"'`]*([\w:?=@&\/#._;-]+)";
$pattern .=
"([\s\"']*\))|<[^>]*\s+(src|href|url)\=[\s\"']*";
$pattern .= "([\w:?=@&\/#._;-]+)[\s\"'`]*[^>]*>))/i";
//End pattern building.
preg_match_all ($pattern, $body, $matches);
return (is_array($matches)) ? $matches:FALSE;
}
?>
$matches[3] will contain Javascript import links, $matches[5] will contain the CSS links, and
$matches[8] will contain the regular URL/SRC/HREF HTML links. To get them all in one neat array, you
might use something like this:
<?php
function x_array_merge($arr1,$arr2) {
for($i=0;$i<count($arr1);$i++) {
$arr[$i]=($arr1[$i] == '')?$arr2[$i]:$arr1[$i];
}
return $arr;
}
$url = 'http://www.google.com';
$m = get_links($url);
$links = x_array_merge($m[3],x_array_merge($m[5],$m[8]));
?>