Extracting specific links using PHP preg_match_all

Question

I have an html file containing

 <img width="10" height="12" scr="https://www.site.com/yughggcfgh">
<img width="11" height="15" scr="https://www.site.com/yughggcfghcvbcvb">
<img width="10" height="12" scr="https://www.site.com/a.jpg">
<img width="10" height="12" scr="https://www.site.com/b.gif">

I want to extract the paths of images which doesn't have an extention in an array,
The output must be as follows

ari[1]= <img width="10" height="12" scr="https://www.site.com/yughggcfgh">
ari[2]= <img width="11" height="15" scr="https://www.site.com/yughggcfghcvbcvb">

possible duplicate of [How to parse and process HTML with PHP?](http://stackoverflow.com/questions/3577641/how-to-parse-and-process-html-with-php) — outis, Apr 04 '12 at 11:58

Lawrence Cherone · Accepted Answer · 2012-04-04T12:11:28.457

2

You really should use domDocument or some html parser not regex heres an example:

<?php 
$somesource='<img width="10" height="12" src="https://www.site.com/yughggcfgh">
<img width="11" height="15" src="https://www.site.com/yughggcfghcvbcvb">
<img width="10" height="12" src="https://www.site.com/a.jpg">
<img width="10" height="12" src="https://www.site.com/b.gif">';

$xml = new DOMDocument();
@$xml->loadHTML($somesource);
foreach($xml->getElementsByTagName('img') as $img) {
    if(substr($img->getAttribute('src'),-4,1)!='.'){
        $image[] = $img->getAttribute('src');
    }
}

print_r($image);

Array
(
    [0] => https://www.site.com/yughggcfgh
    [1] => https://www.site.com/yughggcfghcvbcvb
)

?>

edited Apr 04 '12 at 12:11

answered Apr 04 '12 at 12:05

Lawrence Cherone

46,049
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Maybe be more restrictive as to what constitutes an _image extension_ – knittl Apr 04 '12 at 12:08
I noted its an example, im not here to complete scripts for peeps but only give examples to build appon ;p – Lawrence Cherone Apr 04 '12 at 12:10
Thanks it works ! is domDocument will work on every PHP server ?? – Alfred Francis Apr 04 '12 at 12:11
@Alfredfrancis Yes any server with PHP 5. Dont forget to scan through the documentation. – Lawrence Cherone Apr 04 '12 at 12:13
@LawrenceCherone: well… fair enough ;) – knittl Apr 04 '12 at 12:18

knittl · Answer 2 · 2012-04-04T12:02:56.883

1

Regular expressions are probably not the right tool for the job, but here you go …

You should be able to achieve your goal with negative lookbehind assertions:

preg_match_all('/src=".+?(?<!\.jpg|\.jpeg|\.gif|\.png)"/', $html, $matches);

edited Apr 04 '12 at 12:02

answered Apr 04 '12 at 11:56

knittl

246,190
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error : Warning: preg_match() [function.preg-match]: Delimiter must not be alphanumeric or backslash in C:\xampp\htdocs\curl\index.php on line 19 – Alfred Francis Apr 04 '12 at 12:04

Extracting specific links using PHP preg_match_all

2 Answers2