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 $sorting_type is SORT_STRING then items are compares as string, based on current locale.
Return Value: This function returns True on success or False on failure.
Below programs illustrate the asort() function in PHP.
Program 1:
<?php// PHP program to illustrate// asort() functionÂ
// Input different array elements$arr = array("0" => "Web Technology",            "1" => "Machine Learning",            "2" => "neveropen",            "3" => "Computer Graphics",            "4" => "Videos",            "5" => "Report Bug",            "6" => "Article",            "7" => "Sudo Placement",            "8" => "SContribute",            "9" => "Reset",            "10" => "Copy",            "11" => "IDE",            "12" => "Gate Note",        );Â
// Implementation of asort()asort($arr);Â
// for-Loop for displaying resultforeach ($arr as $key => $val) {Â Â Â Â echo "[$key] = $val";Â Â Â Â echo"\n";}Â
?> |
Output:
[6] = Article [3] = Computer Graphics [10] = Copy [12] = Gate Note [2] = neveropen [11] = IDE [1] = Machine Learning [5] = Report Bug [9] = Reset [8] = SContribute [7] = Sudo Placement [4] = Videos [0] = Web Technology
Program 2:
<?php// PHP program to illustrate// asort() function     // Input different array elements$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($arr);Â
// for-Loop for displaying resultforeach ($arr as $key => $val) {Â Â Â Â echo "[$key] = $val";Â Â Â Â echo"\n";}Â
?> |
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
