When PHP throws you an error, there is always a reason. My dev box is set up to throw me everything it finds, and as I am working on a code that needs strong optimization, a question crossed my mind. Before I ask the question, here’s the (simplified) error-ing code: // Function is called many times (~1M) function doSomething($arrTest) { $strName = $arrTest[0]; $strType = $arrTest[1]; $strColor = $arrTest[2]; } $arrTest = array('banana', 'fruit'); doSomething($arrTest); Of course, $arrTest[2] doesn’t exist, and PHP, as friendly as it is, works perfectly, just throwing a notice.