Online PHP editor | refs for oufTK

<?php $css = ' .some_class { font-size: 11px; margin-left: 0.45px; margin-top:11.0005px; border: 1.1px solid blue; } .another_class { background: rgba(0, 0, 0, 0.2); width: 100%; color: #012345; z-index: 12; font-size: calc(100% + 888.888px); }'; $pattern = "/\b\d{1,4}(?:\.\d{1,4})?px/"; var_export(preg_match_all($pattern, $css, $matches) ? $matches[0] : 'fail');