Foreach Keys

Associative arrays let foreach read both the key and the value for each entry.

foreach_keys.php

<?php
$minimum = ;
$matches = 0;
$total = 0;

foreach (["left" => 3, "middle" => 5, "right" => 7] as $name => $amount) {
    if ($amount >= $minimum) {
        $matches = $matches + 1;
        $total = $total + $amount;
    }
}

echo "minimum=" . $minimum . "\n";
echo "matches=" . $matches . "\n";
echo "total=" . $total . "\n";

<?php
$minimum = ;
$matches = 0;
$total = 0;

foreach (["left" => 3, "middle" => 5, "right" => 7] as $name => $amount) {
    if ($amount >= $minimum) {
        $matches = $matches + 1;
        $total = $total + $amount;
    }
}

echo "minimum=" . $minimum . "\n";
echo "matches=" . $matches . "\n";
echo "total=" . $total . "\n";

<?php
$minimum = ;
$matches = 0;
$total = 0;

foreach (["left" => 3, "middle" => 5, "right" => 7] as $name => $amount) {
    if ($amount >= $minimum) {
        $matches = $matches + 1;
        $total = $total + $amount;
    }
}

echo "minimum=" . $minimum . "\n";
echo "matches=" . $matches . "\n";
echo "total=" . $total . "\n";

associative iteration When iterating an associative array, the loop can receive both the key and its matching value.