Online PHP editor | output for kqsCu

Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_STRING in /in/kqsCu on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/kqsCu on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_STRING in /in/kqsCu on line 5
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 - 5.6.40: Warning: Unsupported declare 'strict_types' in /in/kqsCu on line 3 int(0) int(0)
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34: int(0) Fatal error: Uncaught TypeError: strlen() expects parameter 1 to be string, boolean given in /in/kqsCu:11 Stack trace: #0 /in/kqsCu(11): strlen(false) #1 {main} thrown in /in/kqsCu on line 11
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: int(0) Fatal error: Uncaught TypeError: strlen() expects parameter 1 to be string, bool given in /in/kqsCu:11 Stack trace: #0 /in/kqsCu(11): strlen(false) #1 {main} thrown in /in/kqsCu on line 11
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34: int(0) Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, bool given in /in/kqsCu:11 Stack trace: #0 /in/kqsCu(11): strlen(false) #1 {main} thrown in /in/kqsCu on line 11
Process exited with code 255.
Output for 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11: int(0) Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, false given in /in/kqsCu:11 Stack trace: #0 /in/kqsCu(11): strlen(false) #1 {main} thrown in /in/kqsCu on line 11
Process exited with code 255.