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<?php $myArray = array( "0" => array("0" => "test1", "1" => "test2"), "1" => array("0" => "test3", "1" => "test4")); $myArray["45"] = $myArray["0"]; unset($myArray["0"]); $myArray["51"] = $myArray["1"]; unset($myArray["1"]); var_dump($myArray);

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