Preg_replace规则可以更有效地定位

Question

I have some shortcodes that are dynamically generated in a post.

[shortcode 1][shortcode 2][shortcode 3] ... [shortcode 77]

I'm using the WP filter function to content_save_pre to run a preg_match on the content and remove all numbers from the shortcodes.

So:

[shortcode 1] becomes [shortcode]

...

[shortcode 77] becomes [shortcode]

This is what I use now

add_filter( 'content_save_pre' , 'preg_replace' , 10, 1);
funtion preg_replace ($content){
 $content = preg_replace('/shortcode .]/', 'shortcode]', $content);
 return $content;
}

My problem is that on some ocasions the double digit shortcodes do not get changed. This way seams to work (having 2 dots) but there surely is a better way to target the digits so that all of them get removed, regardless of home may there are.

$content = preg_replace('/shortcode ..]/', 'shortcode]', $content);

Answer 1

Use this:

$content = preg_replace('/shortcode \d+\]/', 'shortcode]', $content);