(PHP 4, PHP 5, PHP 7)
Sort an array and maintain index association
bool asort ( array &$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.
Parameters:
array
The input array.
sort_flags
You may modify the behavior of the sort using the optional parameter sort_flags
, for details see sort().
Returns:
Returns TRUE
on success or FALSE
on failure.
Examples:
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.
See also:
arsort() -
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