3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f(){ echo 'oops'; } echo preg_replace('/.+/e', 'strlen("\0")', $s='\\{f()}');
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/BSuva on line 4
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.30
Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/BSuva on line 4 6
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
6
preferences:
188.69 ms | 402 KiB | 319 Q