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<?php define('SOMEVAL', array(3,4,5)); var_dump(strlen(SOMEVAL)); ?>
Output for 8.1.18 - 8.1.28, 8.2.5 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /in/ug2X8:4 Stack trace: #0 {main} thrown in /in/ug2X8 on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.17, 8.2.0 - 8.2.4
Fatal error: Uncaught TypeError: strlen(): Argument #1 ($str) must be of type string, array given in /in/ug2X8:4 Stack trace: #0 {main} thrown in /in/ug2X8 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
Warning: strlen() expects parameter 1 to be string, array given in /in/ug2X8 on line 4 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Warning: Constants may only evaluate to scalar values in /in/ug2X8 on line 2 Notice: Use of undefined constant SOMEVAL - assumed 'SOMEVAL' in /in/ug2X8 on line 4 int(7)

preferences:
320.61 ms | 404 KiB | 453 Q