3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types = 1); class HelloWorld { public function __construct( private callable $diff, ) { } }
Output for 8.0.0 - 8.0.28, 8.1.0 - 8.1.18, 8.2.0 - 8.2.5, 8.4.2
Fatal error: Property HelloWorld::$diff cannot have type callable in /in/PD8MX on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting variable (T_VARIABLE) in /in/PD8MX on line 6
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Warning: Unsupported declare 'strict_types' in /in/PD8MX on line 1 Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting variable (T_VARIABLE) in /in/PD8MX on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Warning: Unsupported declare 'strict_types' in /in/PD8MX on line 1 Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting '&' or variable (T_VARIABLE) in /in/PD8MX on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Warning: Unsupported declare 'strict_types' in /in/PD8MX on line 1 Parse error: syntax error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/PD8MX on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/PD8MX on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/PD8MX on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/PD8MX on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/PD8MX on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/PD8MX on line 5
Process exited with code 255.
preferences:
168.27 ms | 2926 KiB | 6 Q