How to expert in PHP array

Posted on: September 22, 2024 in PHP ,

An array in PHP is a data structure that allows you to store multiple values in a single variable. Arrays can hold different types of data (numbers, strings, objects, etc.), and they can be indexed by numbers (numerically indexed arrays) or by strings (associative arrays).

Types of Arrays in PHP:

1. Indexed Array:

An array with a numeric index.

PHP

$fruits = array("Apple", "Banana", "Cherry");
// or using the short syntax
$fruits = ["Apple", "Banana", "Cherry"];
echo $fruits[0];

PHP Output

Apple

2. Associative Array:

An array where the keys are strings.

PHP

$person = array("name" => "Raghu", "age" => 25, "city" => "New York");
// or using the short syntax
$person = ["name" => "John", "age" => 25, "city" => "New York"];
echo $person['name'];

PHP Output

Raghu

3. Multidimensional Array:

An array containing one or more arrays.

PHP

$people = array(
    array("name" => "Superman", "age" => 25),
    array("name" => "Jane", "age" => 28)
);
echo $people[0]['name'];

PHP Output

Superman

Useful Array Functions in PHP:

count($array): Returns the number of elements in an array.
array_merge($array1, $array2): Merges two or more arrays.
in_array($needle, $haystack): Checks if a value exists in an array.
array_keys($array): Returns all the keys of an array.
array_values($array): Returns all the values of an array.

Example

$numbers = [1, 2, 3, 4, 5];
$sum = array_sum($numbers);
echo $sum;

PHP Output

Arrays in PHP are quite versatile, and you can easily manipulate them with built-in functions.

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How to expert in PHP array

Types of Arrays in PHP:

PHP

PHP Output

PHP

PHP Output

PHP

PHP Output

Useful Array Functions in PHP:

Example

PHP Output

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