output_add_rewrite_var doesn't rewrite URL

Question

output_add_rewrite_var()

As documented here

This function adds another name/value pair to the URL rewrite mechanism. The name and value will be added to URLs (as GET parameter) and forms (as hidden input fields).

So the following code is supposed to do the trick

<?php
output_add_rewrite_var('var', 'value');

echo '<a href="test.php">link</a>'; 

echo '<form action="test.php" method="post">
<input type="text" name="var2" />
</form>';
?>

On form it works fine, and add a hidden field. But the URL( a tag) is still the same.

http://localhost/test.php

I'm expecting

http://localhost/test.php?var=value

How to fix this?

Answer 1

It seems that if you're using PHP >= 7.1.0 the default tag in url_rewriter.tags is form .

So what you're gonna have to do is change this line in php.ini file:

;url_rewriter.tags

To:

url_rewriter.tags = "a=href,area=href,frame=src,form=,fieldset="

Note: The semicolon at the beginning of the line must be removed