PHP AES decryption example Can be tested here: http://phpfiddle.org/main/code/7465540

AESDecryptExample.php

<?php

function decrypt_data($data, $iv, $key) {
    $cypher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');

    if(is_null($iv)) {
        $ivlen = mcrypt_enc_get_iv_size($cypher);
        $iv = substr($data, 0, $ivlen);
        $data = substr($data, $ivlen);
    }

    // initialize encryption handle
    if (mcrypt_generic_init($cypher, $key, $iv) != -1) {
            // decrypt
            $decrypted = mdecrypt_generic($cypher, $data);

            // clean up
            mcrypt_generic_deinit($cypher);
            mcrypt_module_close($cypher);

            return $decrypted;
    }

    return false;
}

function decrypt($data) { 
	$ivLen = 16;
	$key = "tQfeGChqyHEApg7dd76wYQ==";
	$iv = substr($data,0,$ivLen);
	$dec = decrypt_data(base64_decode($data), $iv, base64_decode($key));
	return substr($dec,$ivLen);
}

echo decrypt("Fw6/UWuGpjHDhIt2mVfnXfQ1OKlEbnAfgjaDRMy80uXQs0fi0qm4jJQeOwLcXgH9");

?>