Php Undefined index: error

Php undefined index

// Your array index has no value or is not referencing anything,
// The easiest way to overcome this is to simply check whether
// it has been defined
if (isset($arr[$i])) {
	// Do something
}

Php Undefined index: error

// Before using $_POST['value']    if (isset($_POST['value']))    {              // Instructions if $_POST['value'] exist    }

Source: ccm.net

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