A Brutalist's Guide to Regex

Example 8: Finding all occurrences of /b/ with Replacing them with /b

Use the preg_match_all() function to find all occurrences of /b/ in the text, then use preg_replace() to wrap them in /b.

For this example, let's assume we have the following text: "Hello, world!

First, we use preg_match_all() to find all occurrences of /b/ in the text:

preg_match_all('/b/', $text, $matches);

This will return an array of all matches, which we can then use with preg_replace() to replace them with /b:

preg_replace('/b/', '/b', $text);

And that's it!