This is a handy regular expression snippet to find and remove unused shortcode parameters from a wordpress shortcode.

It will grab all empty shortcode params like parameter=”” inside a shortcode bracket and remove them.

We used this in our new form tool coming out soon to clean up the markup seen by users in the wordpress editor before inserting a shortcode into the wordpress editor.

Regex Pattern:

/[a-zA-Z0-9_]*=""/g

Matches:

[inbound_field label=”label 1″ type=”text” description=”” required=”0″ dropdown=”” radio=”” placeholder=”” html=”” dynamic=””]

Output from find/replace:

[inbound_field label="label 1" type="text" required="0"]

PHP Regex Remove Empty Shortcodes Function:

<?php
$shortcode = '[inbound_field label="label 1" type="text" description="" required="0" dropdown="" radio="" placeholder="" html="" dynamic=""]';
$regex_pattern = '/[a-zA-Z0-9_]*=""/g';
$replacement = '';
echo preg_replace($regex_pattern, $replacement, $shortcode);
// output = [inbound_field label="label 1" type="text" required="0"]
?>