str_replace with array
Because str_replace() replaces left to right, it might replace a previously inserted value when doing multiple replacements.
// Outputs F because A is replaced with B, then B is replaced with C, and so on... // Finally E is replaced with F, because of left to right replacements. $search = array('A', 'B', 'C', 'D', 'E'); $replace = array('B', 'C', 'D', 'E', 'F'); $subject = 'A'; echo str_replace($search, $replace, $subject);
str_replace with arrays just performs all the replacements sequentially. Use strtr instead to do them all at once:
$new_message = strtr($message, 'lmnopq...', 'abcdef...');
Easy and better than str_replace:
<?php$arr = array( "http://" => "http://www.", "w" => "W", "d" => "D"); $word = "http://desiweb.ir"; echo strtr($word,$arr);?>strtr PHP doc here