身份證校正碼的計算

原來我的ID最後一位X其實是2了。 public function id_verify($my_id) { $coefficient = array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); $remainder_map = array(1,0,'X',9,8,7,6,5,4,3,2); $count = 0; for ($i=0; $i < 17; $i++) { $count += $my_id[$i] * $coefficient[$i]; } $remainder = $count % 11; if ($my_id[17] == $remainder_map[$remainder]){ echo 'true'; }else{ echo 'false'; } } 複製代碼

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