There is a problem with the url you try to access. It is broken ! You should have tried first. The new URL, that I found on the FF console is :
http://translate.google.com/translate_tts?ie=UTF-8&q=Hello&tl=en&total=1&idx=0&textlen=5&prev=input
For the single word Hello. And you see that you have to specify the language, and the length of your text in textlen, even though it did work for all the sentences I tried without changing this var.
Another problem is that you have to urlencode() your text, or you will have a bug with accents and punctuation. So the line to download the MP3 becomes :
// Language of the sentence $lang = "fr"; $mp3 = file_get_contents( 'http://translate.google.com/translate_tts?ie=UTF-8&q='. urlencode($text) .'&tl='. $lang .'&total=1&idx=0&textlen=5&prev=input');
So the complete code looks like :
<?php
$text = "Bonjour, comment allez vous ?";
// Yes French is a beautiful language.
$lang = "fr";
// MP3 filename generated using MD5 hash
// Added things to prevent bug if you want same sentence in two different languages
$file = md5($lang."?".urlencode($text));
// Save MP3 file in folder with .mp3 extension
$file = "audio/" . $file . ".mp3";
// Check folder exists, if not create it, else verify CHMOD
if (!is_dir("audio/"))
mkdir("audio/");
else
if (substr(sprintf('%o', fileperms('audio/')), -4) != "0777")
chmod("audio/", 0777);
// If MP3 file exists do not create new request
if (!file_exists($file))
{
// Download content
$mp3 = file_get_contents(
'http://translate.google.com/translate_tts?ie=UTF-8&q='. urlencode($text) .'&tl='. $lang .'&total=1&idx=0&textlen=5&prev=input');
file_put_contents($file, $mp3);
}
?>