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, $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 // PHP program to illustrate // asort() function // Input different array elements $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" ,
);
// Implementation of asort() asort( $arr );
// for-Loop for displaying result 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 // PHP program to illustrate // asort() function // Input different array elements $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,
);
// Implementation of asort() asort( $arr );
// for-Loop for displaying result 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
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Reference: http://php.net/manual/en/function.asort.php