Sostituisci testo

[pezzo]

SE non ho capito male cosa vuoi... dal manuale php

With reference to the google type searches above ...

This is a case insensitive replace....

This code below will highlight the "found" text in red and return the string unaltered (in terms of case).

<?php
function turn_red($haystack,$needle)
{
     $h=strtoupper($haystack);
     $n=strtoupper($needle);
     $pos=strpos($h,$n);
     if ($pos !== false)
         {
        $var=substr($haystack,0,$pos)."<font color='red'>".substr($haystack,$pos,strlen($needle))."</font>";
        $var.=substr($haystack,($pos+strlen($needle)));
        $haystack=$var;
        }
     return $haystack;
}
?>