The **PHP `array_push()` function** inserts one or more elements to the end of an array.  

# Syntax

The function is written as follows:

```php
array_push(arr, value1, value2, ...)
```

# Code

The following example uses the `array_push()` function to add elements to an array:

<?php
$arr = array("dog", "snake");
array_push($arr, "dove", "panda", "hippo");
print_r($arr);
?>

> According to PHP's [official documentation](https://www.php.net/manual/en/function.array-push.php), `array_push()` is optimal when used for inserting multiple elements into an array at once; however, it is not optimal for single insertions.   

What is the PHP array_push() function?

Inserts multiple elements into array end efficiently but suboptimal for single insertions.