Help-Php replace characters

[Sifat3d]

Pls help me with this:
i want to make a php script.suppose In a text input box someone writes "a b c" and submits it i need it to be converted via php to "x y z" and displayed. I will define what characters to change. Like i will define that "a" needs to be replaced with "x" and so on. I have already done this in javascript but it only works in pc. I want to make it for mobile thats why it needs to be in php. Please help me someone and maybe provide me an fully functional example script which does this. Thanks in advance.:-)

[s3nzo]

str_replace('a b c', 'x y z', $var ) 

[subzero]

You Nutters can try

$text = preg_replace(' a b c ' , ' x y z ' , $text);

$text = str_replace(' a b c ' , ' x y z ' , $text);

PHP: str_replace - Manual

[Sifat3d]

Confuzed

i don't understand, please explain in an easy manner cause i'm an newbie in php

Someone enters "a b c"(just an example) in an html form and when he submits my php script converts it to "x y z"(another example).
Please help me and post example with the html form

[arnage]

First u should know how to retrive data from form to variable via _POST, and than use posted examples to replace what u want.
Try reading this: php for the absolute beginner

[ACIDCORE]

u must start learning php to understand what they are posting..php needs understanding.you sould not just copy and paste it..just a friendly advice..