PHP判断网址是否能访问

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1. function checkRemoteUrl($url) {
   
2.     $ch = curl_init();
   
3.     curl_setopt($ch, CURLOPT_URL, $url);
   
4.     curl_setopt($ch, CURLOPT_NOBODY, true);
   
5.     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   
6.     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
   
7.     curl_setopt($ch, CURLOPT_HEADER, false);
   
8.     curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0'); // 设置一个合适的User-Agent
   
9.     curl_exec($ch);
   
10.     $responseCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    
11.     curl_close($ch);
    
12. 
    
13.     return $responseCode == 200; // 返回true如果HTTP状态码为200
    
14. }
    
15. 
    
16. $remoteImageUrl = 'http://www.baidu.com';
    
17. if (checkRemoteUrl($remoteImageUrl)) {
    
18.     echo "可以访问";
    
19. } else {
    
20.     echo "无法访问";
    
21. }

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