How to create an array in php? A brief analysis of various methods

In PHP, array is a very common data type. An array is an ordered collection of values, each with a unique key.

The following are the different ways to create an array in PHP.

1. Manually create and initialize the array
You can manually create and initialize the array in the following way:

$animals = array("dog", "cat", "bird", " fish");

In the above example, we created an array called $animals and stored "dog", "cat", "bird" and "fish" in the array.

2. Use the array() function to create an array

Another way to create an array is to use the array() function in PHP:

$animals = array() ;
$animals[0] = "dog";
$animals[1] = "cat";
$animals[2] = "bird";
$animals[3] = " fish";

In the above example, we first create an empty array $animals and then add values ​​to the array with indexes 0, 1, 2 and 3 respectively.

3. Use the range() function to create an array
The range() function allows you to create an array filled with values ​​in a specified range. Here is an example of how to create an array using the range() function:

$numbers = range(1, 10);

In the above example, we created an array called $numbers Array containing values ​​from 1 to 10.

4. Create an associative array using key-value pairs
In addition to the ordinary array called "index array", there is another array type called "associative array" in PHP. Associative arrays associate each value with a key. Here is an example of how to create an associative array:

$person = array(
"name" => "John",
"age" => 30,
"gender" => "male"
);

In the above example, we created an associative array named $person and used "name", "age" and "gender" as keys Add values ​​to the array.

Summary

Creating arrays in PHP is very simple and can be done using different methods and techniques. You can create and populate arrays manually, use common functions to populate arrays, or use associative arrays to associate values ​​with keys. No matter which method you choose, PHP arrays are a powerful and commonly used data type that can help you easily manage and manipulate data during development.

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