<?php
// Starting the session so we could access the session variables
session_start();
// Including our mp3 stitching class
include_once('./stitch_mp3.php');
// The captcha word we are making the audio for
$captcha = $_SESSION['captcha_q'];
// Getting the length of the captcha
$length = strlen($captcha);
$prev_char = null;
// Stitching the MP3 files together
for($c = 0; $c < $length; $c++)
{
// Current character we are working with
$char = substr($captcha, $c, 1);
// Checking to make sure we don't do anything with the parenthesis
if(($char != '(') && ($char != ')'))
{
// If previous was an open parenthesis, then we are saying negative (instead of minus; as only negative numbers have parenthesis around them)
if($prev_char == '(')
{
$char = '(-';
}
// Initiating the first character
if(!isset($mp3))
{
$mp3 = new stitch_mp3('../sounds/' . $char . '.mp3');
}
else
{
$mp3->append_mp3('../sounds/' . $char . '.mp3');
}
}
$prev_char = $char;
}
// Making sure we got this going to the browser (and not as a download)
$mp3->inline = 1;
// Output
$mp3->output(md5($captcha . time()) . '.mp3');
?>
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