What are the differences between using reset(), array_keys(), and foreach with break; to access the first value of an array in PHP?

When trying to access the first value of an array in PHP, there are a few different methods that can be used. The reset() function can be used to reset the internal pointer of the array to the first element. array_keys() can be used to get an array of all the keys in the array and then access the first key. Using a foreach loop with a break statement can also be used to iterate over the array and break out of the loop after the first iteration, effectively accessing the first value.

// Using reset() function
$array = [1, 2, 3, 4];
$firstValue = reset($array);
echo $firstValue;

// Using array_keys() function
$array = [1, 2, 3, 4];
$keys = array_keys($array);
$firstKey = $keys[0];
$firstValue = $array[$firstKey];
echo $firstValue;

// Using foreach loop with break statement
$array = [1, 2, 3, 4];
foreach ($array as $value) {
    $firstValue = $value;
    break;
}
echo $firstValue;