3v4l.org

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<?php $count = 8999; $string = str_repeat("a", $count); var_dump(preg_match('/\A( [\x09\x0A\x0D\x20-\x7E] | [\xC2-\xDF][\x80-\xBF] | \xE0[\xA0-\xBF][\x80-\xBF] | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | \xF0[\x90-\xBF][\x80-\xBF]{2} | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} )*\z/x', $string)); ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false)
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 - 5.3.22, 5.3.29, 5.4.9 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28

Process exited with code 139.
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4, 5.3.23 - 5.3.28, 5.4.0 - 5.4.8
int(1)

preferences:
249.85 ms | 402 KiB | 387 Q