Can PHP add elements to an array without using array functions?

php can add elements to an array without using array functions. In PHP, you can use the array literal "[]" to add elements to and from the end of the array. The syntax is "$array variable name [subscript] = value", where the subscript (index value) can be a string or an integer; note the following Scaling values ​​are not repeatable and therefore cannot be set to an existing value. When a specific index value (subscript) is not specified within square brackets "[]", the default is a numeric index, and the index value will increase sequentially from the original numeric index.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, DELL G3 computer

php can be used to add arrays to arrays without using array functions Add elements.

In PHP, we can use the array literal "[]", in the form of "$array variable name[subscript] = value;" format adds elements to and from the end of the array.

Subscript can be a string, an integer, or empty (that is, no specific index value is specified).

<?php
header("Content-type:text/html;charset=utf-8");
$array = array(&#39;Apple&#39; => &#39;苹果&#39;,&#39;Banana&#39; => &#39;香蕉&#39;,&#39;Orange&#39; => &#39;橘子&#39;,&#39;Plum&#39; => &#39;李子&#39;,&#39;Strawberry&#39; => &#39;草莓&#39;);
var_dump($array);
$array[0] = &#39;欢迎&#39;;
$array[1] = &#39;来到&#39;;
$array[2] = &#39;PHP中文网&#39;;
$array[&#39;url&#39;] = &#39;https://www.php.cn/&#39;;
//输出语句
var_dump($array);
?>

Note: The subscript value cannot be repeated. If it is repeated, the element is not added but replaced, so it cannot be set to an existing value.

<?php
header("Content-type:text/html;charset=utf-8");
$array= array("香蕉","苹果","梨子","橙子","橘子","榴莲");
var_dump($array);
$array[0] = &#39;欢迎&#39;;
$array[1] = &#39;来到&#39;;
$array[2] = &#39;PHP中文网&#39;;
$array[&#39;url&#39;] = &#39;https://www.php.cn/&#39;;
//输出语句
var_dump($array);
?>

If you are worried that the set subscript already exists (replacement element), it becomes a replacement element; you can not specify a specific index value in square brackets, so the default is Numeric index, the index value will increase sequentially from the original numerical index.

<?php 
header(&#39;content-type:text/html;charset=utf-8&#39;);  
$array= array("香蕉","苹果","梨子","橙子","橘子","榴莲");
var_dump($array);
$array[] = &#39;欢迎&#39;;
$array[] = &#39;来到&#39;;
$array[] = &#39;PHP中文网&#39;;
$array[] = &#39;https://www.php.cn/&#39;;
//输出语句
var_dump($array);
?>

The previous subscript is a string, then the index value starts from 0 and increases sequentially

<?php
header("Content-type:text/html;charset=utf-8");
$array = array(&#39;Apple&#39; => &#39;苹果&#39;,&#39;Banana&#39; => &#39;香蕉&#39;,&#39;Orange&#39; => &#39;橘子&#39;,&#39;Plum&#39; => &#39;李子&#39;,&#39;Strawberry&#39; => &#39;草莓&#39;);
var_dump($array);
$array[] = &#39;欢迎&#39;;
$array[] = &#39;来到&#39;;
$array[] = &#39;PHP中文网&#39;;
$array[] = &#39;https://www.php.cn/&#39;;
//输出语句
var_dump($array);
?>

Recommended learning : "PHP Video Tutorial"

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