$_SERVER['SERVER_NAME'];
strpos($text, '123') !== false
array_push($list, $v1)
preg_match_all('#playlistId="(.*)";#', $info, $data);
file_get_contents($url)
$str = str_replace('替换为乐檬', '原来的小檬', $str);
unset($viode['vod_blurb']); //去掉简介
//将字符串以,分割为一个一维数组,参数一不可以为""
explode(',', $str);
fopen("file.txt", "r");