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satie83 on 03/30/12

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PHP - Sorting of a key on a multi-dimensional array

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A nice way to do sorting of a key on a multi-dimensional array - DavidG

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$people = array( 
    array("name"=>"Bob","age"=>8,"colour"=>"red"), 
    array("name"=>"Greg","age"=>12,"colour"=>"blue"), 
    array("name"=>"Andy","age"=>5,"colour"=>"purple")
);
 
$arrSortArray = array();
 
foreach($people as $person) {
    foreach($person as $key=>$value){
        if(!isset($arrSortArray[$key])){
            $arrSortArray[$key] = array();
        }
        $arrSortArray[$key][] = $value;
    }
}
 
$orderby = "name"; //change this to whatever key you want from the array
 
array_multisort($arrSortArray[$orderby],SORT_DESC,$people);