Solution for "php checkboxes 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

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

php Undefined index: error

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