What are the methods of sorting php arrays?

There are 6 common methods for sorting arrays in php: 1. "sort()" sorts the array in ascending order; 2. "rsort()" sorts the array in descending order; 3. "asort()" Sort by value and retain the index relationship; 4. "ksort()" sorts according to the key and retain the index relationship; 5. "arsort()" sorts according to the value in descending order and retain the index relationship; 6. "krsort()" according to the key Sort in descending order, preserving index relationships.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

There are 6 common methods for sorting arrays in php:

1. sort() - Sort the array in ascending order

$numbers = array(4, 2, 8, 6);
sort($numbers);
print_r($numbers); // Output: Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 )

2. rsort() - Sort the array in ascending order Sort in descending order

$numbers = array(4, 2, 8, 6);
rsort($numbers);
print_r($numbers); // Output: Array ( [0] => 8 [1] => 6 [2] => 4 [3] => 2 )

3. asort() - Sort by value and retain the index relationship

$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
asort($age);
print_r($age); // Output: Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )

4. ksort() - Sort by key and retain the index relationship

$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
ksort($age);
print_r($age); // Output: Array ( [Ben] => 37 [Joe] => 43 [Peter] => 35 )

5. arsort() - Sort in descending order by value, and retain the index relationship

$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
arsort($age);
print_r($age); // Output: Array ( [Joe] => 43 [Ben] => 37 [Peter] => 35 )

6. krsort() - Sort in descending order by key, retain the index relationship

$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
krsort($age);
print_r($age); // Output: Array ( [Peter] => 35 [Joe] => 43 [

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