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run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = "\xE1\x8D\x9F\x86"; preg_match_all( '/\X/u' , $string , $matches , PREG_SET_ORDER ); print_r($matches); exit(0);
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( )
Output for 4.3.11, 5.0.0 - 5.0.4
Warning: preg_match_all(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in /in/9oMCl on line 5 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in /in/9oMCl on line 5 Array ( )