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
// 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 }Copyright © 2021 Codeinu
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