xw.al/ext.php

<?php
//*API扩展文件*/

function getIP() { 
  if (getenv('HTTP_CLIENT_IP')) { 
  $ip = getenv('HTTP_CLIENT_IP'); 
} 
elseif (getenv('HTTP_X_FORWARDED_FOR')) { 
	$ip = getenv('HTTP_X_FORWARDED_FOR'); 
} 
	elseif (getenv('HTTP_X_FORWARDED')) { 
	$ip = getenv('HTTP_X_FORWARDED'); 
} 
  elseif (getenv('HTTP_FORWARDED_FOR')) { 
  $ip = getenv('HTTP_FORWARDED_FOR'); 
} 
  elseif (getenv('HTTP_FORWARDED')) { 
  $ip = getenv('HTTP_FORWARDED'); 
} 
else { 
	$ip = $_SERVER['REMOTE_ADDR']; 
} 
	return $ip; 
} 

function curl($url) {
	$ip = getIP();
	$curl = curl_init($url);

    #curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)");
    curl_setopt($curl, CURLOPT_FAILONERROR, true);
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array('CLIENT-IP: '.$ip,'X-FORWARDED-FOR: '.$ip));
    #设置超时时间，最小为1s（可选）
    curl_setopt($curl , CURLOPT_TIMEOUT, 5);

    $html = curl_exec($curl);
    curl_close($curl);
    return $html;
}

function err_msg($msg) {
	$data = [
		'code'		=>	403,
		'err_msg'	=>	$msg
	];
	exit(json_encode($data));
}