How to cut extra spaces?

Question

PHP

There is a description of the product, for example:

<li>Text</li><li>Dimensions ( cm ): 28 x 18 x 9</li></ul>

You need to remove the spaces inside the brackets, around the "cm":

<li>Text</li><li>Dimensions (cm): 28 x 18 x 9</li></ul>

Answer 1

preg_replace('~\(\s*cm\s*\)~', '(cm)', $str)