(PHP 4, PHP 5, PHP 7)
asort — Sort an array and maintain index association
&$array
[, int $sort_flags = SORT_REGULAR
] )This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant.
Note:
If two members compare as equal, their relative order in the sorted array is undefined.
arrayThe input array.
sort_flags
You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort().
Returns TRUE on success or FALSE on failure.
Example #1 asort() example
<?php
$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");
asort($fruits);
foreach ($fruits as $key => $val) {
echo "$key = $val\n";
}
?>
The above example will output:
c = apple b = banana d = lemon a = orange
The fruits have been sorted in alphabetical order, and the index associated with each element has been maintained.