Online PHP editor | output for D5PQJ

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /in/D5PQJ on line 3 Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /in/D5PQJ:3 Stack trace: #0 [internal function]: strlen(Array) #1 /in/D5PQJ(3): array_filter(Array, 'strlen') #2 {main} thrown in /in/D5PQJ on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30: Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /in/D5PQJ:3 Stack trace: #0 [internal function]: strlen(Array) #1 /in/D5PQJ(3): array_filter(Array, 'strlen') #2 {main} thrown in /in/D5PQJ on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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/D5PQJ on line 3 Warning: strlen() expects parameter 1 to be string, array given in /in/D5PQJ on line 3 array(3) { [3]=> int(0) [4]=> float(0) [5]=> string(1) "0" }
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: Notice: Array to string conversion in /in/D5PQJ on line 3 Notice: Array to string conversion in /in/D5PQJ on line 3 array(5) { [3]=> int(0) [4]=> float(0) [5]=> string(1) "0" [6]=> array(0) { } [7]=> array(1) { [0]=> string(1) "a" } }