The ip address conflicts with other systems on the network. Code in php to detect whether a geographical IP address is available.

Copy the code The code is as follows:

/********************************************
*
* Function name: curl_string ($url,$proxy)
* Function: Detect proxy IP address
* Author: Li Feilin
* Date: 2011-11-09
*
****************** **************************/
function curl_string ($url,$proxy)
{
$user_agent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5 FirePHP/0.2.1";
$ch = curl_init();
curl_setopt ($ch, CURLOPT_PROXY, $proxy);
curl_setopt ($ch , CURLOPT_URL, $url);//Set the IP to be accessed
curl_setopt ($ch, CURLOPT_USERAGENT, $user_agent);//Simulate the browser used by the user
@curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1); // Use automatic Jump
curl_setopt ( $ch, CURLOPT_TIMEOUT, 120 ); //Set the timeout
curl_setopt ( $ch, CURLOPT_AUTOREFERER, 1 ); // Automatically set the Referer
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'c:cookie.txt') ;
curl_setopt ($ch, CURLOPT_HEADER, 1);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_TIMEOUT, 10);
$result = curl_exec ($ch);
// Check if any error occured
if( $result === false)
{
error_log(date("H:i:s") . ' Curl failed: ' . curl_error($ch) ." -- ". $proxy."n", 3, MYMEDIA.'/log/'.date('Y-m-d').'_Err.log');
}else{
error_log(date("H :i:s") . ' Curl success: ' . $proxy."n", 3, MYMEDIA.'/log/'.date('Y-m-d').'_OK.log');
}
curl_close ($ch);
return $result;
}

The above introduces the code used in PHP to detect whether a geographical IP address is available if the IP address conflicts with other systems on the network, including the content of the conflict between the IP address and other systems on the network. I hope you are interested in the PHP tutorial. Friends help.