日志写入

$path = './log/';
mkdir($path);
chmod($path, 0777);
$file = 'access_token.txt';
$filename = touch($path.$file);
chmod($path.$file, 0777);
$writeTime = date('Y:m:d h:i:s',time());
file_put_contents($path.$file, $writeTime." ".$data."\n",FILE_APPEND);   //最后这个参数是追加的意思。javascript>