Regex str_replace

Question

Would it be possible to incorporate a str_replace method with a regular expression, designed to catch url strings in a simple html < textfield > input type?<

Answer 1

What you're looking for is preg_replace:

$pg = preg_replace('{regex goes here}', '{replacement goes here}', $pg);

Answer 2

Check out preg_replace here, this is what you are lookin for.

// From the documentation.
preg_replace($regularExpression, $replacement, $subject);