How do you output a single element from a PHP array?

In PHP, you can use the echo or print_r function to output individual elements of an array.

To output a single element of an array using the echo function, you need to specify the index or key name of the array. For example:

$array = ["apple", "banana", "orange"];
echo $array[0]; // 输出：apple

You can use the print_r function to display a single element of an array by specifying its index or key. For example:

$array = ["apple", "banana", "orange"];
print_r($array[1]); // 输出：banana

It is important to note that if the elements of the array are associative arrays, you can use the key name to output the corresponding value. For example:

$person = ["name" => "John", "age" => 25, "city" => "New York"];
echo $person["name"]; // 输出：John

Furthermore, you can also use the var_dump function to output individual elements of an array, which provides more detailed information such as the element’s type and length. For example:

$array = ["apple", "banana", "orange"];
var_dump($array[2]); // 输出：string(6) "orange"