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run code in 300+ PHP versions simultaneously
<?php preg_match_all('/\d/u', '123abc٠١٢٣٤٥٦٧٨٩', $matches); var_dump($matches);
Output for 5.3.4 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 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(1) { [0]=> array(13) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(2) "٠" [4]=> string(2) "١" [5]=> string(2) "٢" [6]=> string(2) "٣" [7]=> string(2) "٤" [8]=> string(2) "٥" [9]=> string(2) "٦" [10]=> string(2) "٧" [11]=> string(2) "٨" [12]=> string(2) "٩" } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.3
array(1) { [0]=> array(3) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" } }

preferences:
205.18 ms | 402 KiB | 310 Q