Online PHP editor | output for DCCeh

@ 2018-12-05T15:14:23Z

<?php

function do_action_ref_array( $callback, $args ) {
    var_dump($args);
    //$args[0] = 'b';
    call_user_func_array( $callback, array_slice( $args, 0, 2 ) );
}

function filter( $arg1, &$arg2 ) {
    var_dump( $arg1, $arg2 );
    return $arg1;
};

class Test {
    public function run() {
        do_action_ref_array( 'filter', [1, &$this] );
    }
}

$object = new Test();
$object->run();

Output for 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 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9: array(2) { [0]=> int(1) [1]=> object(Test)#1 (0) { } } int(1) object(Test)#1 (0) { }
Output for 7.1.25 - 7.1.33: array(2) { [0]=> int(1) [1]=> object(Test)#1 (0) { } } Warning: Parameter 2 to filter() expected to be a reference, value given in /in/DCCeh on line 6 int(1) object(Test)#1 (0) { }
Output for 5.6.38, 7.0.33: array(2) { [0]=> int(1) [1]=> &object(Test)#1 (0) { } } int(1) object(Test)#1 (0) { }

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