Summary of thinkPHP query methods, thinkphp query methods_PHP tutorial

Summary of thinkPHP query methods, thinkphp query methods

The examples in this article summarize the thinkPHP query methods. Share it with everyone for your reference, the details are as follows:

1. Common query methods

1. Use string query;
Copy code The code is as follows: $m->where(' id=1 and name="roge" ')->find();
One disadvantage of this method is that when the query field in the data table is a string, quotation marks need to be added to the field value.

2. Using arrays (recommended)

$data['name']="adfa";
$data['id']=3;
$data['_logic']="or"; //字段之间的逻辑关系，默认为and的关系
$m->where($data)->find();

2. Expression query

EQ is equal to;
NEQ is not equal;
GT Greater than;
EGT is greater than or equal to;
LT is less than;
ELT less than or equal to;
LIKE fuzzy query;

$data['id']=array('gt',6);
$data['name']=array('like','%as%'); //notlike
//$data['name']=array('like',array('%as%','%ts'),'and'); 默认为or关系，如果用and需要明确指定
$m->where($data)->select();
//其他查询 between, not between （之间有空格），in，not between,

3. Interval query

$data['id']=array(array('gt',5),array('lt',10)); //默认生成的是and的关系
//$data['id']=array(array('lt',5),array('gt',10),'or')
$data['name']=array(array('like','%d%'),array('like','%e%'),'gege','or');
$m->where($data)->select();

4. Statistical query

count, max, min, avg, sum
Copy code The code is as follows: $m->max('id')
5. SQL direct query

$m=M();
$result=$m->query("select * from think_user where id>1")
//query主要用于对数据进行读取
$result=$m->execute("insert into think_user(`name`) values ('dfd') ");
//execute用于对数据进行写入

For more information related to thinkPHP, please view the special topics on this site: "Introduction to ThinkPHP Tutorial" and "Summary of Common Methods of ThinkPHP"

I hope this article will be helpful to everyone’s PHP programming based on the thinkPHP framework.

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