How can I access the index of elements within a PHP foreach loop?

Finding the Index in a Foreach Loop

Similar to the for loop, the foreach loop in PHP also allows you to access the index of the current element. Unlike the for loop, however, the foreach loop uses a different syntax to expose this information.

The syntax for a basic foreach loop is as follows:

foreach($array as $key=>value) {
    // do stuff
}

In this syntax, the $key variable holds the index of each element in the $array. This index can be used to access the element's corresponding value in the $value variable.

Example

consider the following foreach loop:

$fruits = ['apple', 'banana', 'cherry', 'durian'];

foreach($fruits as $index=>$fruit) {
    echo 'Fruit ' . $index . ': ' . $fruit . PHP_EOL;
}

In this example, the $index variable holds the index of each fruit element in the $fruits array. The loop outputs the index and the corresponding fruit value on each line, resulting in the following output:

Fruit 0: apple
Fruit 1: banana
Fruit 2: cherry
Fruit 3: durian

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