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run code in 150+ php & hhvm versions
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<?php echo preg_replace(array('/(^|_)+(.)/e', '/\.(.)/e'), array("strtoupper('\\2')", "'_'.strtoupper('\\1')"), 'ahoj_jak.se.mas_d');
Output for 7.0.0 - 7.1.0
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/hRtUo on line 3
Output for 4.3.0 - 5.4.45, hhvm-3.10.0 - 3.12.0
AhojJak_Se_MasD
Output for 5.5.0 - 5.6.28
Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/hRtUo on line 3 Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/hRtUo on line 3 AhojJak_Se_MasD