How to loop through all elements of an array in PHP?

There are several ways to loop through all elements of an array in PHP. Here are the most common methods:

$array = [1, 2, 3, 4, 5];

$length = count($array);
for ($i = 0; $i < $length; $i++) {
    echo $array[$i] . "\n";
}

$array = [1, 2, 3, 4, 5];

foreach ($array as $value) {
    echo $value . "\n";
}

Using a while loop with the each() function (Note: each() is deprecated since PHP 7.2, so it's recommended to use foreach instead):

$array = [1, 2, 3, 4, 5];

reset($array); // Reset the array pointer
while (list(, $value) = each($array)) {
    echo $value . "\n";
}

All these methods will output:

Choose the method that suits your requirements and coding style.