修改测试数据

composer.json

@@ -9,5 +9,12 @@
         }
     ],
     "minimum-stability": "dev",
-    "require": {}
+    "require": {
+        "php":">=5.5.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Verify\\": "src/"
+        }
+    }
 }

src/idcard/IdcardVerify.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Verify\idcard;
+
+class IdcardVerify
+{
+    /**
+     * 身份证校验
+     *
+     * @param $num
+     * @return bool
+     */
+    public static function check($num)
+    {
+        if (!in_array(strlen($num), [15, 18])) {
+            return false;
+        } elseif (!self::idcard_checksum18($num)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    // 计算身份证校验码，根据国家标准GB 11643-1999
+    private static function idcard_verify_number($idcard_base)
+    {
+        if (strlen($idcard_base) != 17) {
+            return false;
+        }
+        //加权因子
+        $factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
+        //校验码对应值
+        $verify_number_list = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
+        $checksum = 0;
+        for ($i = 0; $i < strlen($idcard_base); $i++) {
+            $checksum += substr($idcard_base, $i, 1) * $factor[$i];
+        }
+        $mod = $checksum % 11;
+        $verify_number = $verify_number_list[$mod];
+
+        return $verify_number;
+    }
+
+    // 将15位身份证升级到18位
+    private static function idcard_15to18($idcard)
+    {
+        if (strlen($idcard) != 15) {
+            return false;
+        } else {
+            // 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码
+            if (array_search(substr($idcard, 12, 3), ['996', '997', '998', '999']) !== false) {
+                $idcard = substr($idcard, 0, 6) . '18' . substr($idcard, 6, 9);
+            } else {
+                $idcard = substr($idcard, 0, 6) . '19' . substr($idcard, 6, 9);
+            }
+        }
+        $idcard = $idcard . self::idcard_verify_number($idcard);
+
+        return $idcard;
+    }
+
+    // 18位身份证校验码有效性检查
+    private static function idcard_checksum18($idcard)
+    {
+        if (strlen($idcard) == 15) {
+            $idcard = self::idcard_15to18($idcard);
+        }
+        if (strlen($idcard) != 18) {
+            return false;
+        }
+        $idcard_base = substr($idcard, 0, 17);
+        if (self::idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+}