PHP three ways to read remote files

PHP read remote file Several methods summary and the difference analysis.

1.file_get_contents

  
   $url = ' http://www.xxx.com/';
$contents = file_get_contents ($url);
If there is a garbled Chinese use the following code
$getcontent = Iconv ("Gb2312″," utf-8″,file_get_contents ($url));
Echo $getcontent;
Echo $contents;
?>

2.curl

  
   $url = "http://www.xxx.com/";
$ch = Curl_init ();
$timeout = 5;
curl_setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, Curlopt_returntransfer, 1);
curl_setopt ($ch, Curlopt_connecttimeout, $timeout);//Add the following two lines to a Web page that requires user testing
curl_setopt ($ch, Curlopt_httpauth, Curlauth_any);
curl_setopt ($ch, Curlopt_userpwd, Us_name. ":". US_PWD);
$contents = curl_exec ($ch);
Curl_close ($ch);
Echo $contents;
?>

3.fopen->fread->fclose

  
   $handle = fopen ("http://www.xxx.com/", "RB");
$contents = "";
do {
$data = Fread ($handle, 8192);
if (strlen ($data) = = 0)
{break;}
$contents. = $data;
} while (true);
Fclose ($handle);
Echo $contents;
?>

File_get_contents, fopen, Curl Difference analysis:

1. Use file_get_contents and fopen to open the Allow_url_fopen.

Method: Edit PHP.ini, set allow_url_fopen = On,allow_url_fopen Close when fopen and file_get_contents cannot open remote files.

2. Use curl to have space to turn on curl.

Method: Win under Modify PHP.ini, Extension=php_curl.dll front of the semicolon removed, and need to copy Ssleay32.dll and Libeay32.dll to C:\WINDOWS\system32;

Install the Curl extension under Linux.

We recommend that you use the file_get_contents () method when you open the URL to optimize the open speed

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