There are two ways to create an array in PHP: use the array() function or use brackets []. 1. Using the array() function is a traditional way, with good compatibility. Defining index arrays such as $fruits = array("apple", "banana", "orange"), associative arrays such as $user = array("name" => "John", "age" => 25); 2. Using [] is a more concise way that has been supported since PHP 5.4, such as $colors = ["red", "green", "blue"] and $person = ["name" => "Alice", "height" => 170], recommended to use new projects; 3. PHP arrays support mixed types, such as $mixed = [1, "hello", true, ["a", "b"]], suitable for handling complex data structures, but pay attention to type management. The two methods have the same functions and can be selected according to their preferences.
Creating an array in PHP is very simple. There are two common methods: use array() function or use brackets [] . This is a basic but practical feature that is used in almost every PHP project.
Use array() function
The earliest way of writing PHP is to use array() to define arrays. This method is compatible and suitable for scenarios where structures need to be clearly expressed.
$fruits = array("apple", "banana", "orange");It can also be written in a form with a key name:
$user = array(
"name" => "John",
"age" => 25
);Although this writing method is a bit cumbersome, it is still common in some old projects or frameworks.
Quickly define arrays with [] (recommended)
Starting with PHP 5.4, you can use simpler square brackets to create arrays:
$colors = ["red", "green", "blue"];
Associative arrays are also supported:
$person = [
"name" => "Alice",
"height" => 170
];This writing method is more modern and clear, and it is recommended that new projects be used first.
Array elements can be mixed in types
PHP arrays are very flexible. Different types of data can be placed in the same array, such as strings, integers, boolean values ??and even other arrays:
$mixed = [1, "hello", true, ["a", "b"]];
This is useful when dealing with complex data structures, but you also need to pay attention to variable type management to avoid errors.
Basically that's it. Both methods can implement functions, just choose one you like.
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