foreach NOT as...or something

[mikefrederick]

say $x=='http';

 

I want to find every occurrence of a substring within a string, and for each one that is not followed by $x I want to replace the substring with a new string. Need some suggestions on how to pull this one off, wish I could do foreach(substring not as $x)...Thanks guys.

[effigy]

preg_replace('/substring(?!' . preg_quote($x) . ')/', 'replacement', $string);

[Chris92]

Can't you put an if inside your foreach?

foreach(substing as $x)
{
   if($x != http)
   {
       echo "this isn't http";
   }
}

 

Sorry if this is irrelivant to what you mean, I'm having a hard time trying to read English

[mikefrederick]

Yeah I don't know I am lost on this one. This is what I was using to replace all href=" with href="(url here), but I only want to do so where the 4 characters after href=" are not http...

 

 

$content=file_get_contents($url,100000);

$content = ereg_replace('href="','href="' . $url,$content);

[mikefrederick]

some help??

[effigy]

preg_replace('/substring(?!' . preg_quote($x) . ')/', 'replacement', $string);

[mikefrederick]

Yeah I saw, I don't see how that will do what I am saying

[effigy]

So you didn't even try it? How about this:

 

<pre>
<?php
$data = <<<DATA
	<a href="http://www.google.com">Google</a>
	<a href="www.phpfreaks.com">PHP Freaks</a>
DATA;
echo htmlspecialchars(
	preg_replace('/(?<=href=")(?!http)[^"]+/', 'linky', $data)
);
?>
</pre>