regex excluding URL started with 'http://', how to do it?

$string = "<a href=   \"http://abc/\"  >xjtu</a>";
echo $string.'<br/>';
$pattern = "/ href=.*(?!http:\/{2}).*/i";


echo preg_match($pattern, $string);

Code (markup):

Identifying all relative links in a html page that is not started with "http://", why is this regular expressoin not working?


The test page outputs '1', but I expect it to be '0' because the $pattern should exclude all URL that is NOT started with 'http://', so it should NOT match a URL like 'http://abc/'.


Anyone could help, plz? Thanks.

 

Simply work with an if() clause.

Try this.

<?
if(preg_match('@^(?:http://)?([^/]+)@i', $string))
{
    $match = 0;
}else{
    $match = 1;
}
?>

PHP:

I guess that'll work.

 

Thanks for the reply, it works!

Though I was kind of hoping to modify those only in 'href' and 'src' using preg_replace() to add something before the original URLs.

 

I am using preg_replace() to convert all relative URL in 'href' and 'src' into absolute URL on a web page, that is to add 'http://www.site.com' immediately before all relative URLs like in this one:

<a href="/wtf.html">wtf</a>

into

<a href="http://www.site.com/wtf.html">wtf</a>

So are the images and stylesheets and so forth. I'm now STUCK at how to identify a relative URL that is not started with 'http://'.

The QUESTION is, how to write the regex pattern to identify it so that I can use the pattern in preg_replace($pattern, $replacement, $string);



I am rather new to PHP and regular expression, please, any help would be appreciated, thank!