How to add an array in php

In PHP, array is an important data type that can be used to store multiple values. In PHP, there are many ways to add array elements. Below we will introduce several commonly used methods.

1. Use the array_push() function

The array_push() function is a quick way to add one or more elements to the end of an array. For example:

$my_array = array("apple", "banana", "orange");
array_push($my_array, "grape", "kiwi");
print_r($my_array);

The output result is:

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

2. Use an array of key-value pairs

In PHP, you can also use an array of key-value pairs to add elements. For example:

$my_array = array("apple" => 1, "banana" => 2, "orange" => 3);
$my_array["grape"] = 4;
$my_array["kiwi"] = 5;
print_r($my_array);

The output result is:

Array
(
    [apple] => 1
    [banana] => 2
    [orange] => 3
    [grape] => 4
    [kiwi] => 5
)

3. Use the array_merge() function

array_merge() function to merge two or more arrays. For example:

$my_array1 = array("apple", "banana", "orange");
$my_array2 = array("grape", "kiwi");
$my_array = array_merge($my_array1, $my_array2);
print_r($my_array);

The output result is:

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

4. Use the [] operator to add elements

You can directly use the [] operator to add elements to the array. For example:

$my_array = array("apple", "banana", "orange");
$my_array[] = "grape";
$my_array[] = "kiwi";
print_r($my_array);

The output result is:

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

The above methods can easily and quickly add elements to the PHP array, and you can choose different methods according to different needs.

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