3v4l.org

run code in 300+ PHP versions simultaneously
<?php $strings = array('url/?page=2&filter=value', 'url/?page=2', 'url/?filter=value&page=2', 'url/?filter=value&page=2&filter2=value'); foreach($strings as $string){ echo rtrim(preg_replace('/([?&])page=[^&]*&?/', '$1', $string), '&?') . PHP_EOL; }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
url/?filter=value url/ url/?filter=value url/?filter=value&filter2=value
preferences:
122.92 ms | 408 KiB | 5 Q