Following are both valid examples of how to create an empty array (does not contain any values).

$foo = []; 
$foo = array();

In this example, an array named fruit contains different types of fruit.

$fruit = array("apple", "banana", "orange", "grapes");

var_dump can be used to print the data structure of the array.

var_dump($fruit);

Which will return the following. Notice that integers 0 1 2 3 are used as the key for each value in the array. If you want, you can define the keys.

array(4) { [0]=> string(5) "apple" [1]=> string(6) "banana" [2]=> string(6) "orange" [3]=> string(6) "grapes" }

Or print_r can be used.

print_r ($file);

Which should return something like this.

Array ( [0] => apple [1] => banana [2] => orange [3] => grapes )

Specific elements can be printed, like this.

echo "fruit[0] = " . $fruit[0] . "<br />";
echo "fruit[1] = " . $fruit[1] . "<br />";
echo "fruit[2] = " . $fruit[2] . "<br />";
echo "fruit[3] = " . $fruit[3] . "<br />";

Which will return the following.

fruit[0] = apple
fruit[1] = banana
fruit[2] = orange
fruit[3] = grapes

Or you can loop through the array.

foreach ($fruit as $value) {
  echo "$value<br \>";
}

Which will return the following.

apple
banana
orange
grapes