php数组增加元素

截图

代码

 1 <HTML>
 2 <HEAD>
 3 <TITLE>给数组增加元素</TITLE>
 4 </HEAD>
 5 <?
 6     $Cities[] = "<B>北京</B>";    //等同于$Cities[0] = "北京"
 7     $Cities[] = "<B>天津</B>";    //等同于$Cities[1] = "天津"
 8     $Cities[] = "<B>上海</B>";    //等同于$Cities[2] = "上海"
 9     $Cities[] = "<B>深圳</B>";    //等同于$Cities[3] = "深圳"
10     /* 
11     ** 统计元素个数 
12     */
13     $indexLimit = count($Cities);    //把数组中元素的个数赋给$indexLimit
14     /* 
15     ** 打印所有数组 
16     */
17     for($index=0; $index < $indexLimit; $index++)
18     {
19         print("第 $index 个城市是 $Cities[$index]。 <BR>
");
20     }
21 ?>
22 </BODY>
23 </HTML>

count用于统计数组个数

数组的初始化用的是 array(1=>"January", "February", "March",//初始化一个数组

用的也是括号

 1 <?php 
 2 $sites = array 
 3 ( 
 4     "runoob"=>array 
 5     ( 
 6         "菜鸟教程", 
 7         "http://www.runoob.com" 
 8     ), 
 9     "google"=>array 
10     ( 
11         "Google 搜索", 
12         "http://www.google.com" 
13     ), 
14     "taobao"=>array 
15     ( 
16         "淘宝", 
17         "http://www.taobao.com" 
18     ) 
19 ); 
20 print("<pre>"); // 格式化输出数组 
21 print_r($sites); 
22 print("</pre>"); 
23 ?>