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run code in 300+ PHP versions simultaneously
<?php $str = "唧"; preg_match("/[\x{ffffffff}]+/u", $str, $mt); print_r($mt);
Output for 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_match(): Compilation failed: character code point value in \x{} or \o{} is too large at offset 12 in /in/drC77 on line 3
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Array ( )
Output for 5.4.41 - 5.4.45, 5.5.10 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Warning: preg_match(): Compilation failed: character value in \x{} or \o{} is too large at offset 12 in /in/drC77 on line 3
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.40, 5.5.0 - 5.5.9
Warning: preg_match(): Compilation failed: character value in \x{...} sequence is too large at offset 12 in /in/drC77 on line 3
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_match(): Compilation failed: character value in \x{...} sequence is too large at offset 12 in /in/drC77 on line 3 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: character value in \x{...} sequence is too large at offset 12 in /in/drC77 on line 3 Array ( )

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