你能在例子中描述一下吗?
我知道这是一个老问题,但也许我的回答对你或其他人有所帮助. WRITEFUNCTION用于处理文本,因为它是流式传输或基于某些条件中止下载.这是一个简单地将所有文本都放入大写字母的示例:
- function get_html($url){
- $ch = curl_init();
- $obj = $this;//create an object variable to access class functions and variables
- $this->result = '';
- $callback = function ($ch,$str) use ($obj) {
- $obj->result .= strtoupper($str);
- return strlen($str);//return the exact length
- };
- curl_setopt($ch,CURLOPT_URL,$url);
- curl_setopt($ch,CURLOPT_HEADER,0);
- curl_setopt($ch,CURLOPT_WRITEFUNCTION,$callback);
- curl_exec($ch);
- curl_close($ch);
- return $this->result;
- }
要查看我如何使用它,请查看此链接:Parallel cURL Request with WRITEFUNCTION Callback.