An array is a special variable, which can hold more than one value at a time. In PHP, there are three types of arrays: Indexed arrays, Associative arrays, and Multidimensional arrays.

Indexed Arrays

An indexed or numeric array stores each array element with a numeric index:

$cars = array("Volvo", "BMW", "Toyota");
echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";

Associative Arrays

Associative arrays are arrays that use named keys that you assign to them:

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
echo "Peter is " . $age['Peter'] . " years old.";

Multidimensional Arrays

A multidimensional array is an array containing one or more arrays:

$cars = array(
    array("Land Rover",17,15)

for ($row = 0; $row < 4; $row++) {
    echo "<p><b>Row number $row</b></p>";
    echo "<ul>";
    for ($col = 0; $col < 3; $col++) {
        echo "<li>".$cars[$row][$col]."</li>";
    echo "</ul>";

Arrays are an important data structure in PHP and offer a flexible way to organize and manipulate data.

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