How to convert text to MP3 speech/Voice using Google API

<?php

include 'PHP_Text2Speech.class.php';

    $t2s = new PHP_Text2Speech;

?>

    <audio controls="controls" autoplay="autoplay">

       <source src="<?php echo $t2s->speak("Hello PHPGang");?>" type="audio/mp3" />    

    </audio>

Calling Google url to get mp3 file.\\

<?php

include 'PHP_Text2Speech.class.php';

    $t2s = new PHP_Text2Speech;

?>

    <audio controls="controls" autoplay="autoplay">

       <source src="<?php echo $t2s->speak("Hello PHPGang");?>" type="audio/mp3" />    

    </audio>

Calling Google url to get mp3 file.

if (!file_exists($this->mp3File)) { $this->download("http://translate.google.com/translate_tts?ie=UTF-8&q={$this->text}&tl={$this->lang}&total={$this->wordCount}&idx=0&textlen={$this->textLen}", $this->mp3File); }

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if (!file_exists($this->mp3File)) {             $this->download("http://translate.google.com/translate_tts?ie=UTF-8&q={$this->text}&tl={$this->lang}&total={$this->wordCount}&idx=0&textlen={$this->textLen}", $this->mp3File);         }

?>

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