<form action="<?php echo $_SERVER['PHP_SELF']; ?>">
//there is no reason to use this to submit form data to the same page
<form action="">
//will do the same thing<?php
/* This has all the elements that can go in $_SERVER
*/
$_SERVER['PHP_SELF'] Returns the filename of the currently executing script
$_SERVER['GATEWAY_INTERFACE'] Returns the version of the Common Gateway Interface (CGI) the server is using
$_SERVER['SERVER_ADDR'] Returns the IP address of the host server
$_SERVER['SERVER_NAME'] Returns the name of the host server (such as www.w3schools.com)
$_SERVER['SERVER_SOFTWARE'] Returns the server identification string (such as Apache/2.2.24)
$_SERVER['SERVER_PROTOCOL'] Returns the name and revision of the information protocol (such as HTTP/1.1)
$_SERVER['REQUEST_METHOD'] Returns the request method used to access the page (such as POST)
$_SERVER['REQUEST_TIME'] Returns the timestamp of the start of the request (such as 1377687496)
$_SERVER['QUERY_STRING'] Returns the query string if the page is accessed via a query string
$_SERVER['HTTP_ACCEPT'] Returns the Accept header from the current request
$_SERVER['HTTP_ACCEPT_CHARSET'] Returns the Accept_Charset header from the current request (such as utf-8,ISO-8859-1)
$_SERVER['HTTP_HOST'] Returns the Host header from the current request
$_SERVER['HTTP_REFERER'] Returns the complete URL of the current page (not reliable because not all user-agents support it)
$_SERVER['HTTPS'] Is the script queried through a secure HTTP protocol
$_SERVER['REMOTE_ADDR'] Returns the IP address from where the user is viewing the current page
$_SERVER['REMOTE_HOST'] Returns the Host name from where the user is viewing the current page
$_SERVER['REMOTE_PORT'] Returns the port being used on the user's machine to communicate with the web server
$_SERVER['SCRIPT_FILENAME'] Returns the absolute pathname of the currently executing script
$_SERVER['SERVER_ADMIN'] Returns the value given to the SERVER_ADMIN directive in the web server configuration file (if your script runs on a virtual host, it will be the value defined for that virtual host) (such as someone@w3schools.com)
$_SERVER['SERVER_PORT'] Returns the port on the server machine being used by the web server for communication (such as 80)
$_SERVER['SERVER_SIGNATURE'] Returns the server version and virtual host name which are added to server-generated pages
$_SERVER['PATH_TRANSLATED'] Returns the file system based path to the current script
$_SERVER['SCRIPT_NAME'] Returns the path of the current script
$_SERVER['SCRIPT_URI'] Returns the URI of the current page
?>echo $_SERVER['PHP_SELF'];
echo "<br>";
echo $_SERVER['SERVER_NAME'];
echo "<br>";
echo $_SERVER['HTTP_HOST'];
echo "<br>";
// echo $_SERVER['HTTP_REFERER'];
echo "<br>";
echo $_SERVER['HTTP_USER_AGENT'];
echo "<br>";
echo $_SERVER['SCRIPT_NAME'];cd path/to/your/app
php -S 127.0.0.1:8000<?php
// PHP $_SERVER['...']; method
// PHP file name
echo 'PHP file name: '.$_SERVER['PHP_SELF'].'<br>';
// Server name
echo 'Server name: '.$_SERVER['SERVER_NAME'].'<br>';
// HTTP host
echo 'HTTP host: '.$_SERVER['HTTP_HOST'].'<br>';
// Refering link
echo 'Refering link: '.$_SERVER['HTTP_REFERER'].'<br>';
// User agent
echo 'User agent: '.$_SERVER['HTTP_USER_AGENT'].'<br>';
// Script name
echo 'Script name: '.$_SERVER['SCRIPT_NAME'];
// The rest is optional
if($_SERVER['PHP_SELF']=='/filename.php'){
//If there is no folder
echo 'No folder'.$_SERVER['PHP_SELF'];
} else{
// Echo the name of the folder containing the PHP file
echo 'PHP file name: '.$_SERVER['PHP_SELF'];
}
// The same if statements can be used for the script name
if($_SERVER['SCRIPT_NAME']=='/filename.php'){
// If there is no folder
echo 'No folder'.$_SERVER['SCRIPT_NAME'];
} else{
// Echo the name of the folder containing the PHP file
echo 'PHP file name: '.$_SERVER['SCRIPT_NAME'];
}
echo '<a href="repl.it/@CoolWebDev">More from me...</a>';
// I hope you found this helpful!
?>
<?php
/*
Sometimes you will find that your website will not get the correct user IP after adding CDN, then this function will help you
*/
function real_ip()
{
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_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'], $matches)) {
foreach ($matches[0] AS $xip) {
if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
$ip = $xip;
break;
}
}
} elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (isset($_SERVER['HTTP_CF_CONNECTING_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CF_CONNECTING_IP'])) {
$ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
} elseif (isset($_SERVER['HTTP_X_REAL_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_REAL_IP'])) {
$ip = $_SERVER['HTTP_X_REAL_IP'];
}
return $ip;
}
echo real_ip();
?>