/***二维数组排序方法,数字的倒叙排列*@paramarr*@paramfield*/functionsortArrByField(&$array,$field,$desc=false){$fieldArr=array();foreach($arrayas$k=>$v){$fieldArr[$k]=$v[$field];}$sort=$desc==false?SORT_ASC:SORT_DESC;array_multisort($fieldArr,$sort,$array);return$array;}