Regular expression for img tag

I want to change image name in img tag using reg exp.

<img src="images/abc.jpg" alt="" border="0" align="left">

HTML:

Is it possible using reg exp?

 

more details? image name is the src="" or?

 

yes src. i want to change src attribute of image tag

 

what is reg exp?
i know exp = exponent, etc.. but reg exp?
dont think that there had a predefined function called reg
can you please explain more?? more detailed.

 

reg exp=Regular expression

Any solution?

 

Yes, it is possible. Is the img tag in its own variable or part of a larger chunk ?

 

part of a larger chunk. A string returned from file_get_contents.

How it is possible? Any code sample?

 

I don't have the code to replace the src, I do have the code to first get the actual image tag (which I pulled from another site yesterday) So we can try it first. It may not be correct though.


preg_match_all('/<img[^>]*>/Ui', $content, $matches);

Ok, that worked to get the img tag itself. I'm sure there's a better way to do this but this did work ...

$content = 'This is a test. <img src="images/foo.jpg" title="foo">';

$res = preg_match_all('/<img[^>]*>/Ui', $content, $matches);

$string =  $matches[0][0];
$replacement = 'src="images/bar.jpg"';
$pattern = '/src=\"\S*\"/Ui';

echo preg_replace($pattern, $replacement, $string);

PHP: