A simple script to generate audio files using OS X's "say" command from plain text

say.php

<?php

/**
 * Simple script which allows to generate voice recordings using OS X's say 
 * command out of Markdown like file.
 * 
 * Syntax of the arguments to this script is following:
 * 
 * $ php say.php <script_file> [prefix] [index]
 * 
 * [prefix] and [index] allow you to specify which section of the script to 
 * "render," and both are completely optional.
 */

$file = $_SERVER['argv'][1];
$user_prefix = null;
$user_index = null;
$user = false;
$c = count($_SERVER['argv']);

if ($c >= 3)
{
    $user_prefix = $_SERVER['argv'][2];
    if ($c >= 4) $user_index = (int) $_SERVER['argv'][3];
    $user = true;
}

if (!is_file($file))
{
    die("Not a file! $file");
}

$file = file_get_contents($file);
$lines = explode("\n", $file);
$prefix = null;
$index = null;

foreach ($lines as $line)
{
    $line = trim($line);
    
    if (strpos($line, '#') === 0)
    {
        if ($user && $user_prefix === $prefix) break;
        
        $prefix = trim(substr($line, 1));
        $index = 1;
        
        echo "Detected prefix '$prefix'.\n";
        
        continue;
    }
    
    $selected = $prefix === $user_prefix && ($user_index === null ? true : $index === $user_index);
    
    if ($line !== "" && $prefix !== null)
    {
        if ($user && $selected || !$user)
        {
            exec('say -v Daniel "' . addcslashes($line, '"') . '" -o ' . $prefix . '_' . $index);
            echo "Wrote {$prefix}_{$index} to a file.\n";
            
            if ($user && $user_index !== null) break;
        }
        
        $index += 1;
    }
}

echo "Done!\n";