How to get all values ​​in an array using array_values ​​function in PHP

The array_values ​​function in PHP can be used to get all the values ​​in an array. This function returns a new array that contains all the values ​​in the original array, but does not retain the key names of the original array. This function is very useful, especially when dealing with lists of values.

For example, we have an associative array that contains students’ names and corresponding grades:

$grades = array("Alice" => 85, "Bob" => 72, "Charlie" => 91);

Now we want to get the grades of all students, we can use the array_values ​​function:

$scores = array_values($grades);

This function will return a new array:

array(3) {
  [0]=>
  int(85)
  [1]=>
  int(72)
  [2]=>
  int(91)
}

Now the $scores array stores the scores of all students, and these scores can be further processed or output.

The following is a more complex example. We have an array containing the scores of multiple students, each student has multiple grades:

$grades = array(
    "Alice" => array(85, 92, 78),
    "Bob" => array(72, 88, 91),
    "Charlie" => array(91, 84, 90)
);

Now we want to get all students For grades, you can use a loop structure and the array_values ​​function:

$scores = array();
foreach ($grades as $student => $grades_list) {
    $scores = array_merge($scores, array_values($grades_list));
}

In this example, we use a foreach loop to traverse the grade list of all students, obtain all the grades in the list through the array_values ​​function, and then use the array_merge function Merge these scores into the $scores array. Finally, the $scores array contains the scores of all students.

The advantage of using the array_values ​​function is that it can not only handle simple associative arrays, but also nested multi-dimensional arrays, which makes it easier to handle complex data structures. In addition, since this function returns a new array without changing the original array, it is safe and does not destroy the original data.

In PHP programming, the array_values ​​function is a very convenient tool that can help us quickly obtain multiple values ​​and perform further processing. Its usage is very simple and it is an essential function for developers who need to process array data.

The above is the detailed content of How to get all values ​​in an array using array_values ​​function in PHP. For more information, please follow other related articles on the PHP Chinese website!