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<?php declare(strict_types=1); var_dump(filter_var(true, FILTER_VALIDATE_INT)); var_dump(filter_var(false, FILTER_VALIDATE_INT)); var_dump(filter_var(true, FILTER_VALIDATE_INT, ['flags' => FILTER_NULL_ON_FAILURE])); var_dump(filter_var(false, FILTER_VALIDATE_INT, ['flags' => FILTER_NULL_ON_FAILURE]));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
int(1) bool(false) int(1) NULL
preferences:
29.62 ms | 1136 KiB | 7 Q