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<?php function test($id) { if ($id (is_numeric($id) || $id === 'pass')) { return true; } return false; } // this error is a lot more obvious: //var_dump(test('1')); var_dump(test(null));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught Error: Value of type null is not callable in /in/dDDUm:4 Stack trace: #0 /in/dDDUm(14): test(NULL) #1 {main} thrown in /in/dDDUm on line 4
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Value of type null is not callable in /in/dDDUm:4 Stack trace: #0 /in/dDDUm(14): test(NULL) #1 {main} thrown in /in/dDDUm on line 4
Process exited with code 255.
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 - 7.4.33
Fatal error: Uncaught Error: Function name must be a string in /in/dDDUm:4 Stack trace: #0 /in/dDDUm(14): test(NULL) #1 {main} thrown in /in/dDDUm on line 4
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Fatal error: Function name must be a string in /in/dDDUm on line 4
Process exited with code 255.

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