Get the offset (index, array key) of an array in PHP

If you need both the value and its offset or key while looping through an array in PHP, use foreach with both variables.

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$fruits = array(
    0 => "apple",
    1 => "orange",
    2 => "lemon"
);

foreach ($fruits as $key => $fruit) {
    printf("%s is in index %s\n", $fruit, $key);
}

That gives you the array value in $fruit and the corresponding index or key in $key.