PHP Associative Array Example

Store key-value pairs in associative arrays. Edit the code below and press Run to execute it with real PHP in your browser.

Code Editor

<?php
$person = [
    "name" => "John Doe",
    "age" => 30,
    "email" => "john@example.com"
];

echo "Name: " . $person["name"] . "\n";
$person["city"] = "Boston";       // add a key
unset($person["email"]);          // remove a key

foreach ($person as $key => $value) {
    echo "$key => $value\n";
}
var_dump(array_key_exists("email", $person));

Output

Name: John Doe
name => John Doe
age => 30
city => Boston
bool(false)

How this associative array example works

Associative arrays use string keys. Read and write values with $array["key"], delete them with unset(), and check for a key with array_key_exists() or isset() (which also returns false when the value is null).