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PHP array()

Definition and Usage

array() creates an array, with keys and values. If you skip the keys when you specify an array, an integer key is generated, starting at 0 and increases by 1 for each value.

Syntax

array(key => value)

Parameter	Description
key	Optional. Specifies the key, of type numeric or string. If not set, an integer key is generated, starting at 0
value	Required. Specifies the value

Example 1

<?php
$a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse");
print_r($a);
?>

The output of the code above will be:

Array ( [a] => Dog [b] => Cat [c] => Horse )

Example 2

<?php
$a=array("Dog","Cat","Horse");
print_r($a);
?>

The output of the code above will be:

Array ( [0] => Dog [1] => Cat [2] => Horse )

Complete PHP Array Reference