How to add an element to a one-dimensional array in php

In PHP, an array can contain any number of elements. When you need to dynamically add elements to an array, you can use PHP's array_push() and array subscript syntax.

Method 1: Use the array_push() function

The array_push() function adds one or more values ​​to the end of the array and returns the new array length. The usage method is as follows:

<?php
$arr = array(&#39;apple&#39;, &#39;orange&#39;, &#39;banana&#39;);
array_push($arr, &#39;grape&#39;);
print_r($arr);
?>

The output result is:

Array
(
    [0] => apple
    [1] => orange
    [2] => banana
    [3] => grape
)

Method 2: Use the array subscript syntax

You can also directly add elements to the array through the array subscript. The implementation method is as follows:

<?php
$arr = array(&#39;apple&#39;, &#39;orange&#39;, &#39;banana&#39;);
$arr[] = &#39;grape&#39;;
print_r($arr);
?>

The output result is consistent with the previous one:

Array
(
    [0] => apple
    [1] => orange
    [2] => banana
    [3] => grape
)

As can be seen from the above two examples, adding elements to an array is very simple. Use the array_push() function to add multiple elements to an array at one time; use the array subscript rule to add only one element.

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