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@ 2021-08-21T05:43:24Z

<?php
/*
 * Example: Does the use keyword in PHP closures pass by reference?
 *
 * https://stackoverflow.com/a/10869632/367456
 */

function bar(&$var)
{
    $foo = function() use ($var)
    {
        debug_zval_dump($var);
        $var++;
    };
    $foo();
};

$my_var = 0;
bar($my_var);
echo $my_var;

Output
Performance
VLD
References
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debug_zval_dump: documentation ( source)

preferences:dark modelive previewkey bindings

35.78 ms | 404 KiB | 5 Q