making an encryptor,decryptor, help needed.

[krrose27]

I currently have a text area that u type in then u it submit and then it goes to a php file and in that file i want it to retrive data fdrom like 'a'='%','b'='+', and i want it to substitue the letters for the varible or w/e and then echo it how can i do this?

[bpat1434]

I think a simple [man]str_replace[/man] will work here..

<?php

$alpha = array('A'=>'%', 'a'=>'o/o', 'B'=>'+', 'b'=>'t');  

// Or whatever you want the replacements to be...

$contents = $_POST['textArea']; // Retrieve text from form

foreach($alpha as $a=>$rep)
{
  $contents = str_replace($rep, $a, $contents);
}

echo $contents;
?>

~Brett

[krrose27]

that doesnt work.

[krrose27]

got it it was a simple string replace im stupid..

<?php
$letters = array("A","a","B","b");
$crypted = array("#","-","=","+");

$text = $_POST['text'];

$text2 = str_replace($letters, $crypted, $text);

echo $text2;
?>

[laserlight]

You could also use [man]strtr/man, e.g.

<?php
$text = $_POST['text'];
$text2 = strtr($text, "AaBb", "#-=+");
echo $text2;
?>