这篇文章主要介绍了PHP轻量级数据库操作类Medoo增加、删除、修改、查询例子,Medoo是一款超轻量级的PHP SQL数据库框架,支持MySQL, MSSQL, SQLite等数据库,需要的朋友可以参考下

Medoo介绍

Medoo是一款超轻量级的PHP SQL数据库框架，由社交网站Catfan和开源项目Qatrix的创始人黎言卓开发。提供了简单，易学，灵活的API，提升开发Web应用的效率与性能，而且体积只有8KB不到。

特性

轻量级，只有一个文件

简单易学，数据结构一目了然

支持多种SQL语法，以及支持复杂的查询条件

支持多种数据库，包括MySQL, MSSQL, SQLite等等

安全，可防止SQL注入

免费，基于MIT协议

示例代码

增加代码如下:

1. $database = new medoo ( "my_database" );
2. $last_user_id = $database->insert ( "account", [
3. "user_name" => "foo",
4. "email" => "foo@bar.com",
5. "age" => 25,
6. "lang" => [
7. "en",
8. "fr",
9. "jp",
10. "cn"
11. ]
12. ] );

删除代码如下:

1. $database = new medoo ( "my_database" );
2. $database->delete("account", [
3. "AND" => [
4. "type" => "business"
5. "age[<]" => 18
6. ]
7. ]);

修改代码如下:

1. $database = new medoo ( "my_database" );
2. $database->update ( "account", [
3. "type" => "user",
4. // All age plus one
5. "age[+]" => 1,
6. // All level subtract 5
7. "level[-]" => 5,
8. "lang" => [
9. "en",
10. "fr",
11. "jp",
12. "cn",
13. "de"
14. ]
15. ], [
16. "user_id[<]" => 1000
17. ] );

查询，代码如下:

1. $database = new medoo ( "my_database" );
2. $datas = $database->select ( "account", [
3. "user_name",
4. "email"
5. ], [
6. "user_id[>]" => 100
7. ] );
8. // $datas = array(
9. // [0] => array(
10. // "user_name" => "foo",
11. // "email" => "foo@bar.com"
12. // ),
13. // [1] => array(
14. // "user_name" => "cat",
15. // "email" => "cat@dog.com"
16. // )
17. // )
18. foreach ( $datas as $data ) {
19. echo "user_name:" . $data ["user_name"] . " - email:" . $data ["email"] . "<br>";
20. }
21. // Select all columns
22. $datas = $database->select ( "account", "*" );
23. // Select a column
24. $datas = $database->select ( "account", "user_name" );
25. // $datas = array(
26. // [0] => "foo",
27. // [1] => "cat"
28. // )