Online PHP editor | refs for p9E7N

@ 2016-08-09T13:22:20Z

<?php

function func1( &$ref ) {
    function ref( &$ref ) { var_dump( $ref ); }
    
    $func = 'ref';
    ref( $ref );
    
    $func( $ref );
    
    call_user_func_array( $func, array( &$ref ) );
    
    call_user_func( $func, $ref );
}

$var = array();
func1( $var );