PHP | asort() Function (original) (raw)
Last Updated : 09 Nov, 2022
The asort() function is an inbuilt function in PHP which is used to sort an array according to values. It sorts in a way that relation between indices and values is maintained. By default it sorts in ascending order of values.
Syntax:
bool asort( array,array, array,sorting_type )
Parameters: This function accepts two parameters as mentioned above and described below:
- $array: This parameter specifies the array which to be sort. It is a mandatory parameter.
- $sorting_type: This is an optional parameter. There are different sorting types which are discussed below:
- SORT_REGULAR: The value of $sorting_type is SORT_REGULAR then items are compare normally.
- SORT_NUMERIC: The value of $sorting_type is SORT_NUMERIC then items are compares numerically.
- SORT_STRING: The value of $sorting_type is SORT_STRING then items are compares as string.
- SORT_LOCALE_STRING: The value of $sorting_type is SORT_STRING then items are compares as string, based on current locale.
Return Value: This function returns True on success or False on failure.
Below programs illustrate the asort() function in PHP.
Program 1:
<?php
$arr = array ( "0" => "Web Technology" ,
`` "1" => "Machine Learning" ,
`` "2" => "GeeksforGeeks" ,
`` "3" => "Computer Graphics" ,
`` "4" => "Videos" ,
`` "5" => "Report Bug" ,
`` "6" => "Article" ,
`` "7" => "Sudo Placement" ,
`` "8" => "SContribute" ,
`` "9" => "Reset" ,
`` "10" => "Copy" ,
`` "11" => "IDE" ,
`` "12" => "Gate Note" ,
`` );
asort( $arr );
foreach ( $arr as $key => $val ) {
`` echo "[$key] = $val" ;
`` echo "\n" ;
}
?>
Output:
[6] = Article [3] = Computer Graphics [10] = Copy [12] = Gate Note [2] = GeeksforGeeks [11] = IDE [1] = Machine Learning [5] = Report Bug [9] = Reset [8] = SContribute [7] = Sudo Placement [4] = Videos [0] = Web Technology
Program 2:
<?php
$arr = array ( "a" => 11,
`` "b" => 22,
`` "d" => 33,
`` "n" => 44,
`` "o" => 55,
`` "p" => 66,
`` "r" => 77,
`` "s" => 2,
`` "q" => -11,
`` "t" => 3,
`` "u" => 1000,
`` "z" => 1,
`` );
asort( $arr );
foreach ( $arr as $key => $val ) {
`` echo "[$key] = $val" ;
`` echo "\n" ;
}
?>
Output:
[q] = -11 [z] = 1 [s] = 2 [t] = 3 [a] = 11 [b] = 22 [d] = 33 [n] = 44 [o] = 55 [p] = 66 [r] = 77 [u] = 1000
Related Articles:
Reference: http://php.net/manual/en/function.asort.php