3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (PHP_VERSION_ID === 50508) { $string = "miauw\xe1\x8e\xa3"; preg_replace('/./uD', '', $string, -1, $count); var_dump( $string, $count ); }
Output for 5.2.7 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.7, 5.5.9 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 5.5.8
string(8) "miauwᎣ" int(6)
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 - 5.2.6
Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/ADlac on line 3
preferences:
271.9 ms | 402 KiB | 383 Q