php array函数_PHP array（）函数与示例

r囧r小猫 2023-03-05 12:39 75阅读 0赞

php array函数

## PHP array()函数 **(**PHP array() Function**)** ##

**array() function** is a predefined function in PHP, it is used to create an array of the elements, array of the arrays etc.

**array()函数**是PHP中的预定义函数，用于创建元素数组，数组数组等。

By using **array() function**, we can create two types of arrays,

通过使用**array()函数** ，我们可以创建两种类型的数组，

1.  Indexed arrays
    
    索引数组
2.  Associative arrays (arrays with the keys & values)
    
    关联数组(具有键和值的数组)
3.  And, multidimensional arrays
    
    而且，多维数组

**Syntax to create an indexed array:**

**创建索引数组的语法：**

array(element1, element2, element2, ...);

**Syntax to create array with keys:**

**用键创建数组的语法：**

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

**PHP code:**

**PHP代码：**

Here, we are creating an indexed array and printing the array with one by one element (using indexes) and also printing the complete array.

在这里，我们创建一个索引数组，并用一个一个元素(使用索引)打印该数组，并打印整个数组。

<?php
    	//array of numbers
    	$arr_num = array(10, 20, 30, 40, 50);
    	//array with strings
    	$arr_string = array("Laptop", "Mobile", "Tablet");
    	//array with mixed types
    	$arr_mixed = array("Hello", 10, "friends", 20);
    	
    	//printing arrays elements
    	print ("Array elements: $arr_num[0], $arr_num[1],  $arr_num[2],  $arr_num[3],  $arr_num[4]\n");
    	print ("Array elements: $arr_string[0], $arr_string[1],  $arr_string[2]\n");
    	print ("Array elements: $arr_mixed[0], $arr_mixed[1],  $arr_mixed[2],   $arr_mixed[3]\n");	
    	
    	//printing complete arrays
    	print ("arr_num is...\n");
    	print_r ($arr_num);
    	print ("arr_string is...\n");
    	print_r ($arr_string);
    	print ("arr_mixed is...\n");
    	print_r ($arr_mixed);
    ?>

**Output**

**输出量**

Array elements: 10, 20,  30,  40,  50
    Array elements: Laptop, Mobile,  Tablet
    Array elements: Hello, 10,  friends,   20
    arr_num is...
    Array
    (
        [0] => 10
        [1] => 20
        [2] => 30
        [3] => 40
        [4] => 50
    )
    arr_string is...
    Array
    (
        [0] => Laptop
        [1] => Mobile
        [2] => Tablet
    )
    arr_mixed is...
    Array
    (
        [0] => Hello
        [1] => 10
        [2] => friends
        [3] => 20
    )

**PHP Code:**

**PHP代码：**

Here, we are creating associative (array with keys & values) and printing elements using keys and also printing the complete array.

在这里，我们将创建关联(具有键和值的数组)并使用键来打印元素，并打印整个数组。

<?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 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/array-function-with-example.aspx][https_www.includehelp.com_php_array-function-with-example.aspx]

php array函数

[https_www.includehelp.com_php_array-function-with-example.aspx]: https://www.includehelp.com/php/array-function-with-example.aspx