相关解释： 1,ini_get : Returns the value of the configuration option as a string on success, or an empty string on failure(读取 php.ini 配置文件中的值) 2,; Whether to allow the treatment of URLs (like http:// or ftp://) as files. allow_url_fopen = On(配置文件中的内容) 3,fopen( "rb"): 在操作二进制文件时如果没有指定 'b' 标记，可能会碰到一些奇怪的问题，包括坏掉的图片文件以及关于 /r/n 字符的奇怪问题。 注意: 为移植性考虑，强烈建议在用 fopen() 打开文件时总是使用 'b' 标记。 注意: 再一次，为移植性考虑，强烈建议你重写那些依赖于 't' 模式的代码使其使用正确的行结束符并改成 'b' 模式。 4,strtolower -- Make a string lowercase 5,curl_init() :curl_init -- Initialize a cURL session(初始化一个cUrl会话) resource curl_init ( [string url] ) Initializes a new session and return a cURL handle for use with the curl_setopt(), curl_exec(), and curl_close() functions. url--If provided, the CURLOPT_URL option will be set to its value. You can manually set this using the curl_setopt() function. Returns a cURL handle on success, FALSE on errors. 6,curl_setopt -- Set an option for a cURL transfer(提供设置) bool curl_setopt ( resource ch, int option, mixed value ) Sets an option on the given cURL session handle. (具体请看 PHP 手册) There: CURLOPT_URL ：The URL to fetch. You can also set this when initializing a session with curl_init(). CURLOPT_CONNECTTIMEOUT ：The number of seconds to wait whilst trying to connect. Use 0 to wait indefinitely.(无限期等待 设置为 0) CURLOPT_RETURNTRANSFER ：TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly. CURLOPT_FAILONERROR ：TRUE to fail silently if the HTTP code returned is greater than or equal to 400. The default behavior is to return the page normally, ignoring the code. CURLOPT_USERAGENT ：The contents of the "User-Agent: " header to be used in a HTTP request. 7,curl_exec : Perform a cURL session, This function should be called after you initialize a cURL session and all the options for the session are set. 如果成功则返回 TRUE，失败则返回 FALSE。 However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure 8,curl_close -- Close a cURL session
