3v4l.org

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<?php var_export(filter_var(false, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE )); var_export(filter_var("foo", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_export(filter_var(false, FILTER_VALIDATE_BOOLEAN, )); var_export(filter_var("foo", FILTER_VALIDATE_BOOLEAN, ));
Output for 7.3.16 - 7.3.33, 7.4.3 - 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
falseNULLfalsefalse
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.18, 5.5.0 - 5.5.2, 7.2.29 - 7.2.33
Parse error: syntax error, unexpected ')' in /in/PmR2L on line 5
Process exited with code 255.
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140.98 ms | 402 KiB | 190 Q