How to output numbers after sorting an array in php

In PHP, if you want to sort numbers in an array, you will use the built-in functions sort(), rsort(), asort(), arsort() and other functions. Among them, the sort() and rsort() functions are used to sort ordinary arrays, and the asort() and arsort() functions are used to sort associative arrays.

Based on this, if you want to output the sorted array elements, you need to loop through the output. Below, we will use the sort() function as an example to introduce how to sort the array and output the array elements.

The sort() function can sort the array in ascending order. Its basic usage is as follows:

$numbers = array(4, 1, 6, 2, 5, 3);
sort($numbers);

The above code means creating an array $numbers containing 6 numeric elements, and then using the sort() function Sort array elements in ascending order. If you use the print_r() function to output an array, you can see the sorted result:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
)

The output result of the above code is an array containing 6 elements, where the subscript of each element corresponds to the original subscript , and the value of each element corresponds to the result of sorting the elements.

If you want to output the sorted array elements, you can use a for loop to traverse the array, as shown below:

for($i=0; $i<count($numbers); $i++){
    echo $numbers[$i]. " ";
}

The above code means using a for loop to traverse the array and output each element to the screen , the output result is:

1 2 3 4 5 6

As can be seen from the above example, after sorting the numbers, the output array elements can be traversed through a for loop. If you are sorting an array in descending order, you can use the rsort() function and loop through the output array elements in the same way.

In addition to the sort() and rsort() functions, the asort() and arsort() functions can also sort associative arrays. Their usage is similar to the sort() and rsort() functions, except that they support sorting of associative arrays.

In short, whether you are sorting an ordinary array or an associative array, as long as you understand the relevant functions provided by PHP, you can easily sort the numbers and output the sorted results.

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