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@ 2014-05-19T16:45:59Z

<?php
$foo = "bar";

function outer () {

   $inner = function () use ( $foo ) {
       var_dump( $foo );
   };

   $inner();
}

outer();
?>

Output
Performance
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References
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var_dump: documentation ( source)

preferences:dark modelive preview

48.76 ms | 402 KiB | 5 Q