Thinkphp where() 方法的查找数据优化-PHP Tutorial-php.cn

Thinkphp where() 方法的查找数据优化

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Release： 2016-07-06 13:52:07

Original

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第一种方式

<code>$bank = array(12) {
  ["bank_id"] => string(1) "9"
  ["bank_type"] => string(1) "1"
  ["bank_operator_id"] => string(1) "2"
  ["bank_operator_name"] => string(9) "唐新朋"
  ["bank_operator_type"] => string(1) "3"
  ["bank_accept_id"] => string(1) "1"
  ["bank_accept_name"] => string(9) "汪昌宁"
  ["bank_accept_type"] => string(1) "1"
  ["bank_sum"] => string(5) "50000"
  ["bank_mark"] => string(3) "500"
  ["bank_confirm"] => string(1) "0"
  ["bank_create_time"] => string(10) "1467113725"
}

$m->where($bank)->setField('bank_confirm','1');</code>

Copy after login

第二种方式

<code>$bank = array(12) {
  ["bank_id"] => string(1) "9"
  ["bank_type"] => string(1) "1"
  ["bank_operator_id"] => string(1) "2"
  ["bank_operator_name"] => string(9) "唐新朋"
  ["bank_operator_type"] => string(1) "3"
  ["bank_accept_id"] => string(1) "1"
  ["bank_accept_name"] => string(9) "汪昌宁"
  ["bank_accept_type"] => string(1) "1"
  ["bank_sum"] => string(5) "50000"
  ["bank_mark"] => string(3) "500"
  ["bank_confirm"] => string(1) "0"
  ["bank_create_time"] => string(10) "1467113725"
}

$condition['bank_id'] = $bank["bank_id"];
$m->where($condition)->setField('bank_confirm','1');</code>

Copy after login

这两种方法都可以实现我想要的操作但是
第一种方法是否会对服务器或数据库造成压力

第二种是可以多写这一行代码

<code>$condition['bank_id'] = $bank["bank_id"];</code>

Copy after login

纠结中(⊙﹏⊙)

回复内容：

第一种方式

<code>$bank = array(12) {
  ["bank_id"] => string(1) "9"
  ["bank_type"] => string(1) "1"
  ["bank_operator_id"] => string(1) "2"
  ["bank_operator_name"] => string(9) "唐新朋"
  ["bank_operator_type"] => string(1) "3"
  ["bank_accept_id"] => string(1) "1"
  ["bank_accept_name"] => string(9) "汪昌宁"
  ["bank_accept_type"] => string(1) "1"
  ["bank_sum"] => string(5) "50000"
  ["bank_mark"] => string(3) "500"
  ["bank_confirm"] => string(1) "0"
  ["bank_create_time"] => string(10) "1467113725"
}

$m->where($bank)->setField('bank_confirm','1');</code>

Copy after login

第二种方式

<code>$bank = array(12) {
  ["bank_id"] => string(1) "9"
  ["bank_type"] => string(1) "1"
  ["bank_operator_id"] => string(1) "2"
  ["bank_operator_name"] => string(9) "唐新朋"
  ["bank_operator_type"] => string(1) "3"
  ["bank_accept_id"] => string(1) "1"
  ["bank_accept_name"] => string(9) "汪昌宁"
  ["bank_accept_type"] => string(1) "1"
  ["bank_sum"] => string(5) "50000"
  ["bank_mark"] => string(3) "500"
  ["bank_confirm"] => string(1) "0"
  ["bank_create_time"] => string(10) "1467113725"
}

$condition['bank_id'] = $bank["bank_id"];
$m->where($condition)->setField('bank_confirm','1');</code>

Copy after login

这两种方法都可以实现我想要的操作但是
第一种方法是否会对服务器或数据库造成压力

第二种是可以多写这一行代码

<code>$condition['bank_id'] = $bank["bank_id"];</code>

Copy after login

纠结中(⊙﹏⊙)

谢谢邀请。不知道你查询中的bank_id是不是唯一的，如果是唯一的第二种条件就足够了。虽然你第一种条件很多查询起来精确度也高，我看都是string类型，如果都是有索引还好，如果有的没有索引，一个条件足够的话我建议还是第二种。

谢邀，bank_id不出意外必然是唯一键或者主键，所以肯定
$m->where(array('bank_id' => $bank['bank_id']))->setField('bank_confirm','1');

楼上已经正确回答了你的问题，bank_id是唯一键则单条件查询

理论上查询条件越多，过滤数据越多，查询越快。但有一个主键或者索引字段即可，加个limit=1，效率就足够好了。

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Thinkphp where() 方法的查找数据优化

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Thinkphp where() 方法的 查找数据优化

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Thinkphp where() 方法的查找数据优化