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run code in 500+ PHP versions simultaneously
<?php $str = 'Fry me a Beaver. Fry me a Beaver! Fry me a Beaver? Fry me Beaver no. 4?! Fry me many Beavers... End'; var_export( preg_split('~[.?!]+\K\s+(?=[A-Z])~', $str, 0, PREG_SPLIT_NO_EMPTY) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 0 => 'Fry me a Beaver.', 1 => 'Fry me a Beaver!', 2 => 'Fry me a Beaver?', 3 => 'Fry me Beaver no. 4?!', 4 => 'Fry me many Beavers...', 5 => 'End', )

preferences:
87.53 ms | 1268 KiB | 4 Q