php二维数组排序后获取最大值
PHP一维数组的排序可以用sort(),asort(),arsort()等函数,但是PHP二维数组的排序需要自定义.
PHP自定义代码如下:
function array_sort( $arr , $keys , $type = 'asc' ){ //2维数组排序 $keysvalue = $new_array = array (); foreach ( $arr as $k => $v ){ $keysvalue [ $k ] = $v [ $keys ]; } if ( $type == 'asc' ){ asort( $keysvalue ); } else { arsort( $keysvalue ); } reset( $keysvalue ); foreach ( $keysvalue as $k => $v ){ $new_array [ $k ] = $arr [ $k ]; } return $new_array ; }最近在做一个数据分析系统,需要用到各种排序,下面是一段排序,代码如下:
//$re 为数据来源，二维数组 $re = $this ->array_sort( $re , 'LV' , 'desc' ); //排序 foreach ( $re as $key => $val ){ foreach ( $val as $key2 => $val2 ){ if ( $key2 == "uid" ){ $count [] = $val2 ; //获取创建角色总数 $lv [ $val2 ][]= $re [ $key ][ 'LV' ]; //获取所有角色等级 } } } $count = array_count_values ( $count ); foreach ( $count as $key => $val ){ M()->query( "update mj_ad_count set create_juese = create_juese+" . $val . " where suid =" . $key ); echo M()->getLastSql(); } foreach ( $lv as $key => $val ){ //等级排查找出最大值后写入统计 foreach ( $val as $key2 => $val2 ){ if ( $key2 ==0){ //$ls[$key][] = $val2; M()->query( "update mj_ad_count set juese_leave = " . $val2 . " where suid =" . $key ); echo M()->getLastSql(); } } }查看更多关于php二维数组排序后获取最大值 - php数组的详细内容...
声明：本文来自网络，不代表【好得很程序员自学网】立场，转载请注明出处：http://haodehen.cn/did31286