How to use curl to determine webpage 404 (does not exist) in PHP Original, curl404

How PHP uses curl to determine web page 404 (does not exist) Original, curl404

This article describes how PHP uses curl to determine web page 404 (does not exist). Share it with everyone for your reference, the details are as follows:

<&#63;php
/* php使用curl判断404
 * Created on 2016-6-22
 * Writer www.jb51.net
 */
 function chkurl($url){
    $handle = curl_init($url);
    curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($handle, CURLOPT_CONNECTTIMEOUT, 10);//设置超时时间
    curl_exec($handle);
    //检查是否404（网页找不到）
    $httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
    if($httpCode == 404) {
      return false;
    }else{
        return true;
    }
    curl_close($handle);
 }
 $url="http://www.bkjia.com/asdasd.html";
 if(chkurl($url)==true){
     echo "存在";
 }else{
     echo "不存在";
 }
&#63;>

The operation result is: does not exist

Supplement: For HTTP request header information, please refer to the online tool on this site:

HTTP status code list:
http://tools.jb51.net/table/http_status_code

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