How Do I Access Keys in PHP Associative Arrays?

Accessing Keys in Associative Arrays

When iterating through associative arrays in PHP, you can use a traditional 'foreach' loop to access the values. However, if you want to retrieve the keys instead, there is a simple solution.

In your provided code, you have the following associative array:

$arr = array(
   1 => "Value1",
   2 => "Value2",
   10 => "Value10"
);

Using the following code, you can access the values of the array:

foreach ($arr as $v) {
    echo $v;    // Value1, Value2, Value10
}

To obtain the keys of the array, you can modify the loop as follows:

foreach ($arr as $key => $value) {
    echo $key;    // 1, 2, 10
}

By using the arrow (=>) syntax in the foreach loop, you can specify both the key and value variables. In this case, the '$key' variable will contain the key of the current element in each iteration.

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