PHPSorting Arrays

The elements in an array can be sorted in alphabetical or numerical order, descending or ascending.

PHP - Sort Functions For Arrays

In this chapter, we will go through the following PHP array sort functions:

• sort() - sort arrays in ascending order
• rsort() - sort arrays in descending order
• asort() - sort associative arrays in ascending order, according to the value
• ksort() - sort associative arrays in ascending order, according to the key
• arsort() - sort associative arrays in descending order, according to the value
• krsort() - sort associative arrays in descending order, according to the key

Sort Array in Ascending Order - sort()

Thesort() function sort arrays in ascending order.

$cars = array("Volvo", "BMW", "Toyota");sort($cars);

$numbers = array(4, 6, 2, 22, 11);sort($numbers);

Sort Array in Descending Order - rsort()

Thersort() function sort arrays in descending order.

$cars = array("Volvo", "BMW", "Toyota");rsort($cars);

$numbers = array(4, 6, 2, 22, 11);rsort($numbers);

Sort Array - asort()

Theasort() function sort associative arrays in ascending order, according to the value.

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");asort($age);

Sort Array - ksort()

Theksort() function sort associative arrays in ascending order, according to the key.

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");ksort($age);

Sort Array - arsort()

Thearsort() function sort associative arrays in descending order, according to the value.

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");arsort($age);

Sort Array - krsort()

Thekrsort() function sort associative arrays in descending order, according to the key.

$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");krsort($age);

Complete PHP Array Reference

For a complete reference of all array functions, go to our completePHP Array Reference.

The reference contains a brief description, and examples of use, for each function!