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Case insensitive str_replace

Type:	code fragment
Added by:	stevo_x
Entered:	29/10/2002
Last modified:	09/12/2008
Rating:	(3 votes)
Views:	6354

This function returns a string with all occurences of search in subject replaced with the given replace value.

<?php

                            
 function replacestring($search,$replace,$subject) {

                                $srchlen=strlen($search);    // lenght of searched string

                                

                                while ($find = stristr($subject,$search)) {    // find $search text in $subject - case insensitiv

                                    $srchtxt = substr($find,0,$srchlen);    // get new search text 

                                    $subject = str_replace($srchtxt,$replace,$subject);    // replace founded case insensitive search text with $replace

                                }

                                return $subject;

                            }

                            
 ?>

Usage Example

$a="Hello world, hello world, hello World, HelLo WOrld";

                            

                            echo replacestring("hello","Hi",$a);

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