0
$array      = array(
            'b_E_'.$cnpjClie.'_'.date('Ymd').'_A.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'_A.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'_B.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'_C.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'_A.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'_B.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'_C.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'.'.$ext,
            'b_M_'.$cnpjClie.'_'.date('Ymd').'.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'.'.$ext,
            'b_G_'.$cnpjClie.'_'.date('Ymd').'.'.$ext
        );
        $str = implode("<br>", $array);
        if (in_array($NewArquivo, $array)):
            echo "<b>CNPJ: </b>" . $cnpjClie . "<br>";
            echo "<b>REALIZOU: </b> BACKUP HOJE<br>";
            echo "<b>Arquivo: </b>". $arquivo . "<hr><br>";
        else:
            echo "<b>CNPJ: </b>" . $cnpjClie . "<br>";
            echo "<b>PENDENTE: </b> de backup!<hr><br>";
            //$arrayC   = array($cnpjClie); tentado assim, corrigido abaixo
            $arrayC[] = $cnpjClie;
            $strC     = implode("\n", $arrayC);
        endif;  
I would like to know the data that is not in the array, and store in another array in the case $arrayC[], in order to be able to finally notify who did not backup the day, in the test I tried there, it repeats the same data in ELSE.