/**
* 获取客户端IP, 可能被伪造
* @return string
*/
public function ip(){
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')){
$ip = getenv('HTTP_CLIENT_IP');
}elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')){
$ip = getenv('HTTP_X_FORWARDED_FOR');
}elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')){
$ip = getenv('REMOTE_ADDR');
}elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')){
$ip = $_SERVER['REMOTE_ADDR'];
}
return preg_match("/[\d\.]{7,15}/", $ip, $matches) ? $matches[0] : 'unknown';
}
php下获取客户端IP
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转载自blog.csdn.net/qq_32837111/article/details/106919303
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