PHP | asort() Function
Last Updated :
09 Nov, 2022
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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:
php
php
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.
<?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:
Program 2:
[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
<?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:
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Reference: http://php.net/manual/en/function.asort.php
[q] = -11 [z] = 1 [s] = 2 [t] = 3 [a] = 11 [b] = 22 [d] = 33 [n] = 44 [o] = 55 [p] = 66 [r] = 77 [u] = 1000
