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<?php var_dump('0x1' == 1); var_dump(is_numeric('0x1'));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13, 8.1rc1 - rc3
bool(false) bool(false)
Output for 5.6.0 - 5.6.40
bool(true) bool(true)

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38.19 ms | 460 KiB | 5 Q