PHP strtr() Function

Replace the characters "ia" in the string with "eo":

<?php
echo strtr("Hilla Warld","ia","eo");
?>

Definition and Usage

The strtr() function translates certain characters in a string.

Note: If the from and to parameters are different in length, both will be formatted to the length of the shortest.

strtr(string,from,to)

strtr(string,array)

Parameter	Description
string	Required. Specifies the string to translate
from	Required (unless array is used). Specifies what characters to change
to	Required (unless array is used). Specifies what characters to change into
array	Required (unless to and from is used). An array containing what to change from as key, and what to change to as value

Return Value:	Returns the translated string. If the array parameter contains a key which is an empty string (""), it will return FALSE.
PHP Version:	4+

Replace the string "Hello world" with "Hi earth":

<?php
$arr = array("Hello" => "Hi", "world" => "earth");
echo strtr("Hello world",$arr);
?>