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asort

asort -- Sort an array and maintain index association

Description

void asort(array array);

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.

Example 1. asort() example

$fruits = array("d"=>"lemon","a"=>"orange","b"=>"banana","c"=>"apple");
asort($fruits);
for(reset($fruits); $key = key($fruits); next($fruits)) {
    echo "fruits[$key] = ".$fruits[$key]."\n";
}
This example would display: fruits[c] = apple fruits[b] = banana fruits[d] = lemon fruits[a] = orange The fruits have been sorted in alphabetical order, and the index associated with each element has been maintained.

See also arsort(), rsort(), ksort(), and sort().

 

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