How Does the `=>` Operator Work in PHP Associative Arrays?

` Operator Work in PHP Associative Arrays? " />

Understanding the "=>" Operator in PHP

In PHP, the "=>" operator plays a crucial role in working with associative arrays. It acts as a separator, allowing you to access both the key and value associated with each element in the array.

Consider the following code snippet:

foreach ($user_list as $user => $pass)

Here, the "=>" operator assigns the key of each array element to the variable $user and the corresponding value to the variable $pass.

For instance, given the following array:

$user_list = array(
    'dave' => 'apassword',
    'steve' => 'secr3t'
);

The code would execute the following loop:

foreach ($user_list as $user => $pass) {
    echo "{$user}'s pass is: {$pass}\n";
}

This loop would output:

dave's pass is: apassword
steve's pass is: secr3t

It's important to note that the "=>" operator can also be used with numerically indexed arrays, effectively mapping each index to a variable. For example:

$foo = array('car', 'truck', 'van', 'bike', 'rickshaw');
foreach ($foo as $i => $type) {
    echo "{$i}: {$type}\n";
}

This code would output:

0: car
1: truck
2: van
3: bike
4: rickshaw

The above is the detailed content of How Does the `=>` Operator Work in PHP Associative Arrays?. For more information, please follow other related articles on the PHP Chinese website!