PHP，检查URL和文件是否存在？ [英] PHP, Check if URL and a file exists ?

问题描述

我为WordPress创建了一个插件，要求存在两个文件才能正常运行。

第一个文件被定义为文件系统路径，第二个文件被定义为一个URL。

假设第一个文件是：

  /home/my_site/public_html/some_folder/required_file.php 
  

第二个文件是那：

  http://www.my_site.com/some_folder/required_url_file.php 
  
 
 
关于如何验证两个文件存在的想法？
解决方案
您可以同时检查： 
 
 
  $ file ='/home/my_site/public_html/some_folder/required_file.php'; 
 $ url ='http://www.my_site.com/some_folder/required_url_file.php'; 
 
 $ fileExists = is_file（$ file）; 
 $ urlExists = is_200（$ url）; 
 
 $ bothExists = $ fileExists&& $ urlExists; 
 
函数is_200（$ url）
 {
 $ options ['http'] = array（
'method'=>HEAD，
'ignore_errors'=> 1，
'max_redirects'=> 0 
）; 
 $ body = file_get_contents（$ url，NULL，stream_context_create（$ options））; 
 sscanf（$ http_response_header [0]，'HTTP /％* d。％* d％d'，$ code）; 
返回$ code === 200; 
} 
  
 
I create a plugin for WordPress that requires two files to be exists in order to operate normaly.


The first file is defined as a file system path and the second file is defined as a URL.

Let's say the first file is that:
/home/my_site/public_html/some_folder/required_file.php
and the second file is that:
http://www.my_site.com/some_folder/required_url_file.php
Note that both files are not the same file into the file system. The required_file.php has other content than the required_url_file.php and they act absolutly diferent

Any idea on how to validate the existance of both files ?
解决方案
You can check both:
$file = '/home/my_site/public_html/some_folder/required_file.php';
$url = 'http://www.my_site.com/some_folder/required_url_file.php';

$fileExists = is_file($file);
$urlExists = is_200($url);

$bothExists = $fileExists && $urlExists;

function is_200($url)
{
    $options['http'] = array(
        'method' => "HEAD",
        'ignore_errors' => 1,
        'max_redirects' => 0
    );
    $body = file_get_contents($url, NULL, stream_context_create($options));
    sscanf($http_response_header[0], 'HTTP/%*d.%*d %d', $code);
    return $code === 200;
}


                        
这篇关于PHP，检查URL和文件是否存在？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！