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There is some pre-built function for the array, by which we can sort the array values and index in descending or ascending order.
Kinds of Array
sort()
rsort()
asort()
arsort()
ksort()
krsort()
sort() function sort the array in ascending order by its value. The PHP var_dump function return also datatypes
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('banana', 'apple', 'mango');
var_dump($fruits);
$sorted_fruits = sort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { [0]=> string(5) 'banana' [1]=> string(6) 'apple' [2]=> string(5) 'mango' }
array(3) { [0]=> string(5) 'apple' [1]=> string(6) 'banana' [2]=> string(5) 'mango' }
rsort() function sort the array in descending order by its value. The PHP var_dump function return also datatypes
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('banana', 'apple', 'mango');
var_dump($fruits);
$sorted_fruits = rsort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { [0]=> string(5) 'banana' [1]=> string(6) 'apple' [2]=> string(5) 'mango' }
array(3) { [0]=> string(5) 'mango' [1]=> string(6) 'banana' [2]=> string(5) 'apple' }
asort() function sort the associative array in ascending order by its value. The PHP var_dump function return also datatypes
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('red' => 'apple', 'yellow' => 'mango', 'green' => 'banana');
var_dump($fruits);
$sorted_fruits = asort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { ['red']=> string(5) 'apple' ['yellow']=> string(5) 'mango' ['green']=> string(6) 'banana' }
array(3) { ['red']=> string(5) 'apple' ['green']=> string(6) 'banana' ['yellow']=> string(5) 'mango' }
arsort() function sort the associative array in descending order by its value. The PHP var_dump function return also datatypes
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('red' => 'apple', 'yellow' => 'mango', 'green' => 'banana');
var_dump($fruits);
$sorted_fruits = arsort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { ['red']=> string(5) 'apple' ['yellow']=> string(5) 'mango' ['green']=> string(6) 'banana' }
array(3) { ['yellow']=> string(5) 'mango' ['green']=> string(6) 'banana' ['red']=> string(5) 'apple' }
ksort() function sort the associative array in ascending order by its key. The PHP var_dump function return also datatypes
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('red' => 'apple', 'yellow' => 'mango', 'green' => 'banana');
var_dump($fruits);
$sorted_fruits = ksort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { ['red']=> string(5) 'apple' ['yellow']=> string(5) 'mango' ['green']=> string(6) 'banana' }
array(3) { ['green']=> string(6) 'banana' ['red']=> string(5) 'apple' ['yellow']=> string(5) 'mango' }
krsort() function sort the associative array in descending order by its key. The PHP var_dump function return also datatypes:
<!DOCTYPE html>
<html>
<body>
<?php
$fruits = array('red' => 'apple', 'yellow' => 'mango', 'green' => 'banana');
var_dump($fruits);
$sorted_fruits = krsort($fruits);
var_dump($sorted_fruits);
?>
</body>
</html>
The above code produces the following results
Outputs: array(3) { ['red']=> string(5) 'apple' ['yellow']=> string(5) 'mango' ['green']=> string(6) 'banana' }
array(3) { ['yellow']=> string(5) 'mango' ['red']=> string(5) 'apple' ['green']=> string(6) 'banana' }
