php 24 server

1<form action="<?php echo $_SERVER['PHP_SELF']; ?>"> 
2//there is no reason to use this to submit form data to the same page
3<form action=""> 
4//will do the same thing

1echo $_SERVER['PHP_SELF'];
2echo "<br>";
3echo $_SERVER['SERVER_NAME'];
4echo "<br>";
5echo $_SERVER['HTTP_HOST'];
6echo "<br>";
7// echo $_SERVER['HTTP_REFERER'];
8echo "<br>";
9echo $_SERVER['HTTP_USER_AGENT'];
10echo "<br>";
11echo $_SERVER['SCRIPT_NAME'];

1<?php
2echo $_SERVER['PHP_SELF'];
3echo "<br>";
4echo $_SERVER['SERVER_NAME'];
5echo "<br>";
6echo $_SERVER['HTTP_HOST'];
7echo "<br>";
8echo $_SERVER['HTTP_REFERER'];
9echo "<br>";
10echo $_SERVER['HTTP_USER_AGENT'];
11echo "<br>";
12echo $_SERVER['SCRIPT_NAME'];
13?>

1cd path/to/your/app
2php -S 127.0.0.1:8000

1<?php
2echo $_SERVER['SERVER_NAME'];
3?>

1
2<?php
3/*
4Sometimes you will find that your website will not get the correct user IP after adding CDN, then this function will help you
5*/
6function real_ip()
7{
8   $ip = $_SERVER['REMOTE_ADDR'];
9    if (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
10        foreach ($matches[0] AS $xip) {
11            if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
12                $ip = $xip;
13                break;
14            }
15        }
16    } elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
17        $ip = $_SERVER['HTTP_CLIENT_IP'];
18    } elseif (isset($_SERVER['HTTP_CF_CONNECTING_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CF_CONNECTING_IP'])) {
19        $ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
20    } elseif (isset($_SERVER['HTTP_X_REAL_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_REAL_IP'])) {
21        $ip = $_SERVER['HTTP_X_REAL_IP'];
22    }
23    return $ip;
24
25}
26echo real_ip();
27
28?>
29
30