php二维数组按照某一列排序的方法
/**
* 二维数组排序方法,数字的倒叙排列
* @param arr
* @param field
*/
function sortArrByField(&$array, $field, $desc = false){
$fieldArr = array();
foreach ($array as $k => $v) {
$fieldArr[$k] = $v[$field];
}
$sort = $desc == false ? SORT_ASC : SORT_DESC;
array_multisort($fieldArr, $sort, $array);
return $array;
}
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