3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "\xE1\x8D\x9F\x86"; preg_match_all( '/\X/u' , $string , $matches , PREG_SET_ORDER ); print_r($matches); preg_match_all( '/\X/u' , $string , $matches1 , PREG_SET_ORDER ); print_r($matches1); exit(0);
Output for 4.4.0 - 4.4.9, 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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 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
Array ( ) Array ( )
Output for 5.0.0 - 5.0.4
<br /> <b>Warning</b>: preg_match_all() [<a href='function.preg-match-all'>function.preg-match-all</a>]: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>5</b><br /> Array ( ) <br /> <b>Warning</b>: preg_match_all() [<a href='function.preg-match-all'>function.preg-match-all</a>]: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>9</b><br /> Array ( )
Output for 4.3.11
<br /> <b>Warning</b>: preg_match_all(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>5</b><br /> Array ( ) <br /> <b>Warning</b>: preg_match_all(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>9</b><br /> Array ( )
Output for 4.3.0 - 4.3.10
<br /> <b>Warning</b>: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>5</b><br /> Array ( ) <br /> <b>Warning</b>: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in <b>/in/dgXPd</b> on line <b>9</b><br /> Array ( )

preferences:
193.88 ms | 402 KiB | 342 Q