下面这句代码错哪了

$aid = 11387;

$_G['uid'] = 332;

$tid =50;

function aidencode($aid, $type = 0, $tid = 0) {

	$s = !$type ? $aid.'|'.substr(md5($aid.md5('asdfasfas'.TIMESTAMP.$_G['uid']), 0, 8).'|'.TIMESTAMP.'|'.$_G['uid'].'|'.$tid : $aid.'|'.md5($aid.md5



('asdfasfas').TIMESTAMP).'|'.TIMESTAMP;

	return rawurlencode(base64_encode($s));

}





echo aidencode(11387);

$aid = 11387;

$_G['uid'] = 332;

$tid =50;

function aidencode($aid, $type = 0, $tid = 0) {

    $s = !$type ? $aid.'
------解决方案--------------------
'.substr(md5($aid.md5('asdfasfas'.TIMESTAMP.$_G['uid'])), 0, 8).'
------解决方案--------------------
'.TIMESTAMP.'
------解决方案--------------------
'.$_G['uid'].'
------解决方案--------------------
'.$tid  : $aid.'
------解决方案--------------------
'.md5($aid.md5('asdfasfas').TIMESTAMP).'
------解决方案--------------------
'.TIMESTAMP;

    return rawurlencode(base64_encode($s));

}

echo aidencode(11387);

$aid = 11387;

$_G['uid'] = 332;

$tid =50;

define('TIMESTAMP', time());

function aidencode($aid, $type = 0, $tid = 0) {

	global $_G;

	global $tid;

	$s = !$type ? $aid.'
------解决方案--------------------
'.substr(md5($aid.md5('asdfasfas'.TIMESTAMP.$_G['uid'])), 0, 8).'
------解决方案--------------------
'.TIMESTAMP.'
------解决方案--------------------
'.$_G['uid'].'
------解决方案--------------------
'.$tid : $aid.'
------解决方案--------------------
'.md5($aid.md5('asdfasfas').TIMESTAMP).'
------解决方案--------------------
'.TIMESTAMP;

	return rawurlencode(base64_encode($s));

}





echo aidencode(11387);

?>