php 关联数组索引数组_在PHP中创建关联数组

秒速五厘米 2023-03-05 12:41 49阅读 0赞

php 关联数组 索引数组

In an **associative array**, we can specify the values with the keys. Then, following two things are required to create an associative array: 1) key, and 2) value

在**关联数组中** ，我们可以使用键指定值。 然后，需要执行以下两项操作来创建关联数组：1) key和2) value

key can be used as an index to access the value from the array.

键可以用作从数组访问值的索引。

**Note:** To create an associative or other types of array, we use [array() function][array_ function].

**注意：**要创建关联数组或其他类型的数组，请使用[array()函数][array_ function] 。

**Syntax:**

**句法：**

array(key1=>value1, key2=>value2, key3=>value3, ...);

**Example:**

**例：**

In this example, we are creating an associative array, printing the values: 1) Using keys, and 2) Printing complete array with keys & values

在此示例中，我们将创建一个关联数组，打印值：1)使用键，以及2)打印包含键和值的完整数组

<?php
    	//creating student array with keys & values
    	$std = array('id' => "101", 'name' => "Amit", 'course' => "B.Tech");
    
    	//printing elemenets
    	print ("std elements...\n");
    	print ("Id = " . $std['id'] . " Name = " . $std['name'] . " Course = " . $std['course']);
    	
    	//printing array using for each loop
    	
    	//printing complete array
    	print ("std...\n");
    	print_r($std);
    ?>

**Output**

**输出量**

std elements...
    Id = 101 Name = Amit Course = B.Techstd...
    Array
    (
        [id] => 101
        [name] => Amit
        [course] => B.Tech
    )

> 翻译自: [https://www.includehelp.com/php/create-an-associative-array.aspx][https_www.includehelp.com_php_create-an-associative-array.aspx]

php 关联数组 索引数组

[array_ function]: https://www.includehelp.com/php/array-function-with-example.aspx
[https_www.includehelp.com_php_create-an-associative-array.aspx]: https://www.includehelp.com/php/create-an-associative-array.aspx