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<?php var_dump(preg_match('#0-9+#u', '１')); var_dump(preg_match('#\d+#u', '１')); var_dump(preg_match('#0-9+#', '１')); var_dump(preg_match('#\d+#', '１'));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
int(0) int(1) int(0) int(0)
preferences:
62.27 ms | 406 KiB | 5 Q