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Question:how to use PHP Sorting 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()

The following example sorts the elements of the $cars array in ascending alphabetical order:
Example
$cars=array("Volvo","BMW","Toyota");
sort($cars);
?>

The following example sorts the elements of the $numbers array in ascending numerical order:
Example
$numbers=array(4,6,2,22,11);
sort($numbers);
?>

Sort Array in Descending Order - rsort()

The following example sorts the elements of the $cars array in descending alphabetical order:
Example
$cars=array("Volvo","BMW","Toyota");
rsort($cars);
?>

The following example sorts the elements of the $numbers array in descending numerical order:
Example
$numbers=array(4,6,2,22,11);
rsort($numbers);
?>

Sort Array in Ascending Order, According to Value - asort()

The following example sorts an associative array in ascending order, according to the value:
Example
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
asort($age);
?>

Sort Array in Ascending Order, According to Key - ksort()

The following example sorts an associative array in ascending order, according to the key:
Example
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
ksort($age);
?>

Sort Array in Descending Order, According to Value - arsort()

The following example sorts an associative array in descending order, according to the value:
Example
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
arsort($age);
?>

Sort Array in Descending Order, According to Key - krsort()

The following example sorts an associative array in descending order, according to the key:
Example
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
krsort($age);
?>

asked Sep 13, 2013 in PHP by rajesh
edited Sep 12, 2013
0 votes
11 views



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