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function.md

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+## 一些php的小程序
+----
+```
+对于在项目中写的程序，可以以后直接拿来用
+```
+
+[数字转为中文大写](#zhuangdaxie)
+
+
+
+<h4 id="zhuangdaxie">数字转为中文大写</h4>
+```
+public function get_amount($num){
+        $c1 = "零壹贰叁肆伍陆柒捌玖";
+        $c2 = "分角元拾佰仟万拾佰仟亿";
+        $num = round($num, 2);
+        $num = $num * 100;
+        if (strlen($num) > 10) {
+            return NULL;
+        }
+        $i = 0;
+        $c = "";
+        while (1) {
+            if ($i == 0) {
+                $n = substr($num, strlen($num)-1, 1);
+            } else {
+                $n = $num % 10;
+            }
+            $p1 = substr($c1, 3 * $n, 3);
+            $p2 = substr($c2, 3 * $i, 3);
+            if ($n != '0' || ($n == '0' && ($p2 == '亿' || $p2 == '万' || $p2 == '元'))) {
+                $c = $p1 . $p2 . $c;
+            } else {
+                $c = $p1 . $c;
+            }
+            $i = $i + 1;
+            $num = $num / 10;
+            $num = (int)$num;
+            if ($num == 0) {
+                break;
+            }
+        }
+        $j = 0;
+        $slen = strlen($c);
+        while ($j < $slen) {
+            $m = substr($c, $j, 6);
+            if ($m == '零元' || $m == '零万' || $m == '零亿' || $m == '零零') {
+                $left = substr($c, 0, $j);
+                $right = substr($c, $j + 3);
+                $c = $left . $right;
+                $j = $j-3;
+                $slen = $slen-3;
+            }
+            $j = $j + 3;
+        }
+
+        if (substr($c, strlen($c)-3, 3) == '零') {
+            $c = substr($c, 0, strlen($c)-3);
+        }
+        if (empty($c)) {
+            return "零元整";
+        }else{
+            return $c;
+        }
+    }
+```