php身份证号码技巧_php验证身份证号码最终版

function check_card($card) { $city = [11 => "北京", 12 => "天津", 13 => "河北", 14 => "山西", 15 => "内蒙古", 21 => "辽宁", 22 => "吉林", 23 => "黑龙江 ", 31 => "上海", 32 => "江苏", 33 => "浙江", 34 => "安徽", 35 => "福建", 36 => "江西", 37 => "山东", 41 => "河南", 42 => "湖北 ", 43 => "湖南", 44 => "广东", 45 => "广西", 46 => "海南", 50 => "重庆", 51 => "四川", 52 => "贵州", 53 => "云南", 54 => "西藏 ", 61 => "陕西", 62 => "甘肃", 63 => "青海", 64 => "宁夏", 65 => "新疆", 71 => "台湾", 81 => "喷鼻香港", 82 => "澳门", 91 => "国外 "]; $tip = ""; $match = "/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/"; $pass = true; if (!$card || !preg_match($match, $card)) { //身份证格式缺点 $pass = false; } else if (!$city[substr($card, 0, 2)]) { //地址缺点 $pass = false; } else { //18位身份证须要验证末了一位校验位 if (strlen($card) == 18) { $card = str_split($card); //∑(ai×Wi)(mod 11) //加权因子 $factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]; //校验位 $parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2]; $sum = 0; $ai = 0; $wi = 0; for ($i = 0; $i < 17; $i++) { $ai = $card[$i]; $wi = $factor[$i]; $sum += $ai $wi; } $last = $parity[$sum % 11]; if ($parity[$sum % 11] != $card[17]) { //$tip = "校验位缺点"; $pass = false; } } else { $pass = false; } } if (!$pass) return false;/ 身份证格式缺点/ return true;/ 身份证格式精确/ }