- 線上書籍

:::

prev

18. round()/*math function*/

20. array_push()/*Arry function*/ next

next

PHP(2015-10)
============

A very common and useful function is`<span class="keyword" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">rand</span>()`. This function returns a random number between two numbers. Optionally, you can provide your `<span class="identifier" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><span class="keymethods" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">min</span></span>` and `<span class="identifier" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><span class="keymethods" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">max</span></span>` numbers as parameters, like this:

```
<pre style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(197, 200, 198); border-radius: 2px; padding: 7px 10px; font-size: 15px; line-height: 22px; background-color: rgb(35, 44, 49);">
```
<span class="comment" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(150, 152, 150); font-style: italic;"><span class="comment" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">// prints a number between 0 and 32767</span></span>
<span class="keyword" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(178, 148, 187);"><span class="keyword" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">print</span></span> rand();

<span class="comment" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(150, 152, 150); font-style: italic;"><span class="comment" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">// prints a number between 1 and 10</span></span>
<span class="keyword" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(178, 148, 187);"><span class="keyword" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">print</span></span> rand(<span class="number" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(222, 147, 95);"><span class="number" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">1</span></span>,<span class="number" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(222, 147, 95);"><span class="number" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">10</span></span>);
```
```

:::

語系選擇

學校簡介

校長室
 教務處
 學務處
 總務處
 輔導室
 家長會
 媒體報導
 北小臉書
 北小附幼臉書
 課程計畫平台

主選單

地址：521彰化縣北斗鎮文苑路一段32號電話：04-8882008 傳真：04-8871995