- var_dump: documentation ( source)
<?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();