preg_replace to preg_replace_callback

[acctman]

can someone help me change this to preg_replace_callback. i'm receiving the following error Warning: preg_replace_callback(): Requires argument 2, '@constant("\1")', to be a valid callback in

//load current language
        foreach ($langs as $key => $value) if ($value['l_code'] == lang) break;
        $f = fopen('languages/'.$langs[$key]['l_file'],'r') or die('Cannot open language file '.$langs[$key]['l_file']);
        while (!feof($f)) {
                $s = chop(fgets($f,4096));
                if ($s{0} == '#') continue;
                list($key,$value) = explode('=',$s,2);
                $value = preg_replace('/<%(.*)%>/sUe', '@constant("\\1")', $value);
                $def[$key] = $value;
                }
        fclose($f);

[requinix]

After you change the function to be preg_replace_callback, you also have to change the second argument to be a function and not a mere string. The simplest way is to use an anonymous function like

function($matches) {
	// ...
}

$matches will be an array just like how preg_match() works, what with [0] being the full string and [1] being a captured group. Inside this function you call constant() and return whatever you want the replacement to be.

 

Give that a shot. If you still have problems, post the code you tried.

Edited September 2, 2015 by requinix