How to add small array to array in php

PHP is a commonly used server-side scripting language, often used in the field of web development. In PHP, arrays are a very convenient data type that can hold multiple elements without having to use multiple variables. If you want to add a small array to an array, you can use the following method:

1. Use the [] operator

Arrays in PHP can use the [] operator to access and modify the array elements, you can also use the [] operator to add new elements to the array. If you want to add a small array to an array, you can use [] as shown below:

$big_array = array();
$small_array = array('name' => 'Tom', 'age' => 20); 
$big_array[] = $small_array;

In this example, we first created an empty array named $big_array and then created an array named $ small array of small_array and assign it as an associative array with $name being Tom and $age being 20. Finally, we add $small_array to the end of $big_array by running $big_array[] = $small_array. Now, there is an element in $big_array, which is $small_array.

2. Use the array_push() function

PHP also provides an array_push() function, which is used to add one or more elements to the end of the array. For example:

$big_array = array();
$small_array = array('name' => 'Tom', 'age' => 20); 
array_push($big_array, $small_array);

In this example, we use the array_push() function to add $small_array to $big_array. The first parameter of the array_push() function is the target array, which can be followed by one or more elements to be added. In this example, we pass $small_array as the second parameter to the array_push() function.

3. Use the " " operator

When two arrays are added using the " " operator, PHP will merge them into one array. For example:

$big_array = array();
$small_array = array('name' => 'Tom', 'age' => 20); 
$big_array = $big_array + array($small_array);

In this example, we used the " " operator to add $small_array to $big_array. We first create an empty array named $big_array, then use the " " operator to add $small_array to an array consisting of $small_array, and then assign the result to $big_array.

Summary

The above are several ways to add small arrays to PHP arrays. You can choose the method that suits you to achieve your needs. Whether you use the [] operator, the array_push() function, or the " " operator, you will end up with a large array containing small arrays.

The above is the detailed content of How to add small array to array in php. For more information, please follow other related articles on the PHP Chinese website!