从文本和html标签中检测并提取图像URL

Question

How can i detect if there is some image html tag inside a text and extract just the url of the image ?

Eg.

Extract this url :

http://
www.someurl.com/somefileprocessor.php/12345/somedir/somesubdir/someniceimage.j
pg

from this tag (this tag can be inside another bunch of text and/or html)

<img title="Some nice title" border="0"
hspace="0" alt="some useful hint" src="http://
www.someurl.com/somefileprocessor.php/12345/somedir/somesubdir/someniceimage.j
pg" width="629" height="464" />

Thank's in advance Ângelo

Answer 1

A quick attempt at an <img/> tag specific regex:

preg_match_all('/<img[^>]*?\s+src\s*=\s*"([^"]+)"[^>]*?>/i', $str, $matches);

Example