3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_config_bytes($val) { $val = trim($val); $last = substr($val, -1); // Get the last character $val = rtrim($val, $last); // Trim away the last character which isn't a number switch(strtolower($last)) { case 'g': $val *= 1024; case 'm': $val *= 1024; case 'k': $val *= 1024; } return $val; } var_dump(get_config_bytes('20M'));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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 - 8.4.13
int(20971520)

preferences:
158.42 ms | 410 KiB | 5 Q