<?php $allowed = ['Visa', 'Mastercard']; /** Make allowed all lowercase **/ $allowedLower = array_map(function($type) { return strtolower($type); }, $allowed); $cardsGiven = 'Visa,Mastercard,Mint'; $cardsAccepted = []; $data = explode(',', $cardsGiven); foreach ($data as $type) { if (in_array(strtolower($type), $allowedLower)) { $cardsAccepted[] = $type; } } print_r($cardsAccepted);
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Value for `_results` contains invalid data `array`