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<?php global $hook; $hook = function ( &$reference ) { echo "ok\n"; }; $wrap = function() { $user = []; $params = [ &$user ]; $f = function () use ( $params ) { global $hook; call_user_func_array( $hook, $params ); }; echo "inner\n"; call_user_func( $f ); // works return $f; }; $f = $wrap(); echo "outer\n"; call_user_func( $f ); // fails
Output for 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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14, 8.4.1
inner ok outer ok
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30
inner ok outer Warning: Parameter 1 to {closure}() expected to be a reference, value given in /in/XbNo3 on line 11
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/XbNo3 on line 7
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_FUNCTION in /in/XbNo3 on line 4
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/XbNo3 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/XbNo3 on line 4
Process exited with code 255.
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85.73 ms | 412 KiB | 5 Q