PHP Arrays

An array is a special variable, which can hold more than one value at a time.If you have a list of items (a list of mobile names, for example), storing the mobile in single variable could look like this

$mobile1 = "Nokia";
$mobile2 = "oppo";
$mobile3 = "samsung";
$mobile4 = "moto";

In PHP, there are three types of arrays:

1. Indexed array - Array with a numeric index
2. Associative array - Array with named keys
3. Multidimensional array - Array containing one or more array

Indexed array

To create an array, we have a comma separated values in the array.

Syntax

array(var1,var2,var..n);

Example

<?php print_r(array("Nokia","oppo","samsung","moto")); ?>

Out Put

Array ( [0] => Nokia [1] => oppo [2] => samsung [3] => moto )

Associative array

Associative arrays, also called maps or dictionaries, are an abstract data type that can hold data in (key, value) pairs

Syntax

array('key1'=>'value1','key2'=>'value2',....n)

Example

<?php print_r(array('key1'=>'value1','key2'=>'value2')) ?>

Out Put

Array ( [key1] => value1 [key2] => value2 )

Multidimensional array

Multidimensional array is an array containing one or more arrays.

Syntax

array(
array('key1'=>'value1','key2'=>'value2'),
array('key3'=>'value3','key4'=>'value4'),
array('key5'=>'value5','key6'=>'value6')
)

Example

<?php print_r(array(
array('key1'=>'value1','key2'=>'value2'),
array('key3'=>'value3','key4'=>'value4'),
array('key5'=>'value5','key6'=>'value6')
)) ?>

Out Put

Array ( 
[0] => Array ( [key1] => value1 [key2] => value2 ) 
[1] => Array ( [key3] => value3 [key4] => value4 ) 
[2] => Array ( [key5] => value5 [key6] => value6 ) 
)