PHP array_push Function: How it Works with Examples

PHP array_push lets you add one or more values to the end of an array. It appeared to make adding elements faster than writing extra lines of code.

Understand the array_push Function in PHP

The array_push function adds one or more values to the end of an existing array. It works with both numeric and associative arrays.

Here is the syntax:

array_push(array &$array, mixed ...$values): int

• $array is the array to which you want to add values.
• $values are the values you want to add. You can add one or more values.

Here is a quick example:

$items = ["apple", "banana"];
array_push($items, "mango", "grape");
print_r($items);

The code above adds two new values to the array in one function call:

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

The Differences Between array_push and $array[]

The array_push function appends one or more values to the end of an array. The $array[] syntax is a shortcut to append a single value to the end of an array.

Here are the key differences:

You can use array_push when you need to add many values in one go, and the $array[] when you want to add only one value.

Use the array_push with Associative Arrays

You can use array_push with associative arrays. It will still add values to the end, but without keys. This works well for numeric keys, but for named keys you may need direct assignment.

Here is an example:

$user = ["name" => "Sara"];
array_push($user, "Developer");
print_r($user);

This adds a new value with an automatic numeric key after the named key. The output:

Array
(
    [name] => Sara
    [0] => Developer
)

For another example:

$data = ["id" => 1, "role" => "Admin"];
array_push($data, "Active", "Verified");
print_r($data);

This adds two new values at the end with numeric keys. Here is the output:

Array
(
    [id] => 1
    [role] => Admin
    [0] => Active
    [1] => Verified
)

Examples of the array_push in PHP

Add values to a numeric array:

$colors = ["red", "blue"];
array_push($colors, "green", "yellow");
print_r($colors);

This code starts with two colors. It then appends two more colors to the end using array_push in one call.

Here is the output:

Array
(
    [0] => red
    [1] => blue
    [2] => green
    [3] => yellow
)

Merge user input into an array:

$input = ["PHP", "JavaScript"];
$newTech = ["Python", "Go"];
array_push($input, ...$newTech);
print_r($input);

This example takes two arrays and merges them using array_push with the spread operator. It appends all new values without a loop

The output:

Array
(
    [0] => PHP
    [1] => JavaScript
    [2] => Python
    [3] => Go
)

Use array_push with mixed data:

$data = [1, 2, 3];
array_push($data, "four", ["five", 6]);
print_r($data);

This appends a string and another array to the main array. The function handles mixed value types without issue.

The output:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => four
    [4] => Array
        (
            [0] => five
            [1] => 6
        )

)

Build an array dynamically:

$result = [];
array_push($result, date("Y-m-d"));
array_push($result, rand(1, 100));
print_r($result);

This builds an array step by step. It first adds the current date and then a random number using separate array_push calls.

The output:

Array
(
    [0] => 2025-08-14
    [1] => 80
)

Wrapping Up

In this article, you learned what array_push does and how to use it with numeric and associative arrays.

Here is a quick recap:

• It adds one or more values to the end of an array.
• You can use it with numeric and associative arrays.
• It is useful when you want to add multiple values in one call.

FAQs

$fruits = ["apple", "banana"]; 
array_push($fruits, "orange", "grape"); 
print_r($fruits); 

$data = [1, 2]; 
$data[] = 3; // Adds one value
 array_push($data, 4, 5); // Adds multiple values 
print_r($data); 

$person = ["name" => "John"]; 
array_push($person, "Developer"); 
print_r($person); 

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