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run code in 500+ PHP versions simultaneously
<?php function hook( &$x, &$y, $w, $z ) { $x++; $y++; $w++; $z++; } class Hooks { public static function run( $name, $args ) { call_user_func_array( $name, $args ); } public static function run2( $name, $args ) { $args2 = []; foreach ( $args as &$arg ) { $args2[] = &$arg; } call_user_func_array( $name, $args2 ); } } $x = $y = $w = $z = 0; echo "start: $x:$y:$w:$z\n\n"; Hooks::run( 'hook', [ $x, &$y, $w, &$z ] ); echo "run: $x:$y:$w:$z\n\n"; Hooks::run2( 'hook', [ $x, &$y, $w, &$z ] ); echo "run2: $x:$y:$w:$z\n\n";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
start: 0:0:0:0 Warning: hook(): Argument #1 ($x) must be passed by reference, value given in /in/nlVpT on line 9 run: 0:1:0:0 run2: 0:2:0:0
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
start: 0:0:0:0 Warning: Parameter 1 to hook() expected to be a reference, value given in /in/nlVpT on line 9 run: 0:1:0:0 run2: 0:2:0:0
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
start: 0:0:0:0 Warning: Parameter 1 to hook() expected to be a reference, value given in /in/nlVpT on line 9 run: 0:0:0:0 run2: 0:1:0:0
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/nlVpT on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/nlVpT on line 13
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/nlVpT on line 8
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/nlVpT on line 8
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/nlVpT on line 8
Process exited with code 255.
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