php一次性大量数据入库解决方法

INSERT INTO order (`goods_id`,`num`,`price`) VALUES (1,1,'10.00');

//封装成函数

functionadd_order($goods_id,$num,$price){

$db->query("INSERT INTO order (`goods_id`,`num`,`price`) VALUES ($goods_id,$num,$price)");

}

for($i=0;$i<1000;$i++){

$db->query("INSERT INTO order (`goods_id`,`num`,`price`) VALUES ($goods_id,$num,$price)");

}

//这样的话会导致服务器资源占用过大,网站卡死

//所以,我们可以

$sql= "INSERT INTO order (`goods_id`,`num`,`price`) VALUES ";

for($i=0;$i<1000;$i++){

    if($i==0){

    $sql.="($goods_id,$num,$price)";

    }else{

    $sql.=",($goods_id,$num,$price)";

    }

}

$db->query($sql);

UPDATEtiyan.dm_user_cupboard SET`res_id` = CASE`id` WHEN1041 THEN'1'WHEN1058 THEN'1'WHEN1055 THEN'1'END,`food_code` = CASE`id` WHEN1041 THEN'68'WHEN1058 THEN'47'WHEN1055 THEN'49'END,`food_name` = CASE`id` WHEN1041 THEN'红枣'WHEN1058 THEN'莲藕'WHEN1055 THEN'洋葱'END,`num` = CASE`id` WHEN1041 THEN'2'WHEN1058 THEN'3'WHEN1055 THEN'2'END,`level` = CASE`id` WHEN1041 THEN'2'WHEN1058 THEN'2'WHEN1055 THEN'2'END,`update_time` = CASE`id` WHEN1041 THEN'2017-12-09 21:40:06'WHEN1058 THEN'2017-12-09 21:40:06'WHEN1055 THEN'2017-12-09 21:40:06'ENDWHEREid IN( 1041,1058,1055 )

//批量更新

publicfunctionsaveAll($datas,$model){

    ( $model|| $model=$this->tableName);

    $model=empty($model)?$this->name:$model;

    $sql   = ''; //Sql

    $lists= []; //记录集$lists

    $pk    = $this->getPk();//获取主键

    foreach($datasas$data) {

        foreach($dataas$key=>$value) {

            if($pk===$key){

                $ids[]=$value;

            }else{

                $lists[$key].= sprintf("WHEN %u THEN '%s' ",$data[$pk],$value);

            }

        }

    }

    foreach($listsas$key=> $value) {

        $sql.= sprintf("`%s` = CASE `%s` %s END,",$key,$pk,$value);

    }

    $sql= sprintf('UPDATE __%s__ SET %s WHERE %s IN ( %s )',strtoupper($model),rtrim($sql,','),$pk,implode(',',$ids));

    returnM()->execute($sql);

}