How to create an array with key value pairs in PHP?
Last Updated :
25 Sep, 2019
PHP offers us a special type of array called an Associative Array that allows us to create an array with Key-Value pairs. The syntax for creating an Associative Array is as follows:
Syntax 1: Using array() constructor
$arrayVariable = array(
key1 => value1,
key2 => value2,
key3 => value3,
...
keyN => valueN,
);
Syntax 2: Using shorthand notation
$arrayVariable = [
key1 => value1,
key2 => value2,
key3 => value3,
...
keyN => valueN,
];
Note:
- The comma after the last Key-Value pair is optional.
- The Key can be of either integer or string type.
- The Value can be of any valid type.
- If the type of Key is other that string or integer, it will be cast to string or integer depending on the type of Key.
Example 1: Using array() constructor
<?php
$websites = array (
"Facebook" =>
"Facebook, Inc. is an online social media and
social networking service company.",
"Twitter" =>
"Twitter is a microblogging and social networking service on
which users post and interact with messages known as tweets.",
"LinkedIn" =>
"LinkedIn is a business and employment-oriented service
that operates via websites and mobile apps.");
$websites [ "Instagram" ] = "Instagram is a photo and video-sharing
social networking service owned by Facebook, Inc.";
foreach ( $websites as $key => $value ) {
echo "<p>$key: $value <p>" ;
}
?>
|
Output:
Example 2: Using shorthand notation
<?php
$websites = [
"Facebook" =>
"Facebook, Inc. is an online social
media and social networking service company.",
"Twitter" => "Twitter is a microblogging and social networking service
on which users post and interact with messages known as tweets.",
"LinkedIn" => "LinkedIn is a business and
employment-oriented service that operates via websites and mobile apps."];
$websites [
"Instagram" ] = "Instagram is a photo and video-sharing
social networking service owned by Facebook, Inc.";
foreach ( $websites as $key => $value ) {
echo "<p>$key: $value <p>" ;
}
?>
|
Output:
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