PHP $_Server['Php_Self'] to Include Query String

php $_SERVER['PHP_SELF'] to include query string

You could use:

$_SERVER['REQUEST_URI']

to get everything after the domain name folders, query strings etc.
You could then either use the other $_SERVER variables to add the domain, or it should be fine to use without a domain name provided you're not changing hosts.

PHP_SELF not working if URL has $_get value?

Update 1:

I want that when I submit the form i should return to same url but it
is not

You can simply keep the action attribute empty in case you want the form to return to the same page.

<form method="post" action="">

Update 2:

While it's working, according to the W3C documentation it's not a valid value.

The action and formaction content attributes, if specified, must have
a value that is a valid non-empty URL potentially surrounded by
spaces.

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Please notice, PHP_SELF doesn't return the query string (?x=y&z=d).Just the dir and the file name.

PHP_SELF

The filename of the currently executing script, relative to the
document root. For instance, $_SERVER['PHP_SELF'] in a script at the
address http://example.com/foo/bar.php would be /foo/bar.php. The
FILE constant contains the full path and filename of the current (i.e. included) file. If PHP is running as a command-line processor
this variable contains the script name since PHP 4.3.0. Previously it
was not available.

How to work with $_SERVER['QUERY_STRING']

Instead of reusing QUERY_STRING, you should assemble it anew with http_build_query().

// Merge $_GET with new parameter
$QS = http_build_query(array_merge($_GET, array("page"=>2)));

// You should apply htmlspecialchars() on the path prior outputting:
echo "<a href='" . htmlspecialchars("$_SERVER[PHP_SELF]?$QS") . "'> $i </a>";

Thus you have all current $_GET parameters included, but can add or replace entries with new values. And it's ensured that each appears only once.

PHP add/modify a query string param & get the URL

Just to make sure you know about it, use parse_str to parse your query string:

<?php
parse_str($_SERVER['QUERY_STRING'], $query_string);
$query_string['page'] = basename($_SERVER['PHP_SELF']);
$rdr_str = http_build_query($query_string);

Execute $_SERVER['PHP_SELF'] without removing my $_GET variables

$_SERVER['REQUEST_URI'] : The URI which was given in order to access this page.

Reference

Your form should be like:

<form action="<?php echo $_SERVER['REQUEST_URI'] ?>">
 your inputs
</form>

$_Server[php_self] i need to pass multiple variables

You can pass multiple parameters by separating them with &. You can also use http_build_query() to construct the URL query string from an associative array.

$params = array('data1' => $data1, 'data2' => $data2, 'cod' => $cod);
$params['startrow'] = $prev >= 0 ? $prev : ($startrow + 30);
$query = http_build_query($params);
echo '<a class="da" href="' . $_SERVER['PHP_SELF'] . '?' . $query . '">Previous</a>';

Add, change, and remove GET parameters from query string

function changeQueryString($queryStr, $updateStr, $removeStr) {
    parse_str($queryStr, $queryArr);
    parse_str($updateStr, $updateArr);
    parse_str($removeStr, $removeArr);
    $changedArr = array_merge($queryArr, $updateArr);
    foreach($removeArr as $k => $v) {
        if(array_key_exists($k, $changedArr)) {
            unset($changedArr[$k]);
        }
    }
    return http_build_query($changedArr);
}

$str = 'apple=green&banana=yellow2&navi=blue&clouds=white&car=black';
$changedQuery = changeQueryString($str, 'eyes=2&fingers=10&car=purple', 'clouds&apple');
var_dump($changedQuery);

This should work for you, utilizing parse_str(), array_merge() and http_build_query()

PHP How to get the url of the page where include is used

Is there a specific reason why you want to use file_get_contents? You could use include_once('header.php');. in your index.php file. Determining if you are on index.php page you can use in your header.php file

if(basename($_SERVER['PHP_SELF']) == "index.php") { 
    /* show whatever you need */
}

PHP_SELF not working as expected

$_SERVER["REQUEST_URI"] will have what you want.

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