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<?php $blah = mb_strlen(array()); echo ($blah === null) ? "true" : "false";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: mb_strlen(): Argument #1 ($string) must be of type string, array given in /in/T5LDs:3 Stack trace: #0 /in/T5LDs(3): mb_strlen(Array) #1 {main} thrown in /in/T5LDs on line 3
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: mb_strlen() expects parameter 1 to be string, array given in /in/T5LDs on line 3 true
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: mb_strlen() expects parameter 1 to be string, array given in /in/T5LDs on line 3 false

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