hyperlink - How to link to the current PHP file -

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i writing php file don't know best way create link while link in same file different id. mean have file named test.php , contains like:

if ($id == "") {     echo "<a href='".$_server['php_self']."?id=test'>try test page</a>"; } else if ($id == "test") {     echo "here testing content various information!"; }

i want know better more secure code: $_server['php_self']?id=test or test.php?id=test.

i know serves same purpose now, if change file name $_server['php_self']?id=test seems better because still point same file.

but know sure safer.

you should not printing $_server['php_self']; it's security vulnerability (there's example here: how identify requested page in php).

if you're trying link same page, query parameters (?) or anchors (#) can link directly them, @kingkero suggests.

<!--    code snippet runs iframe http://stacksnippets.net/js,     that's root of links you'll see if click "run".  -->  <a href="">link current page</a><br />  <a href="?id=test">add query param current page</a><br />  <a href="#anchor">add anchor tag current page</a>

links don't begin / or protocol (like http://) relative current document's location. links begin / relative domain root. behavior laid out w3c.

broadly speaking, you're right, should avoid hard coding things filename file. should not need use data in $_server construct links.


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