PHP轻量级数据库操作类Medoo增加、删除、修改、查询例子

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

$database = new medoo ( "my_database" );
$last_user_id = $database->insert ( "account", [ 

  "user_name" => "foo",

  "email" => "foo@bar.com",

  "age" => 25,

  "lang" => [ 

    "en",

    "fr",

    "jp",

    "cn" 

  ] 

] );

删除

$database = new medoo ( "my_database" );

     

$database->delete("account", [

    "AND" => [

    "type" => "business"

    "age[<]" => 18

    ]

]);

修改

$database = new medoo ( "my_database" );
$database->update ( "account", [ 

  "type" => "user",

  

  // All age plus one

  "age[+]" => 1,

  

  // All level subtract 5

  "level[-]" => 5,

  

  "lang" => [ 

    "en",

    "fr",

    "jp",

    "cn",

    "de" 

  ] 

], [ 

  "user_id[<]" => 1000 

] );

查询

$database = new medoo ( "my_database" );
$datas = $database->select ( "account", [ 

  "user_name",

  "email" 

], [ 

  "user_id[>]" => 100 

] );
// $datas = array(

// [0] => array(

// "user_name" => "foo",

// "email" => "foo@bar.com"

// ),

// [1] => array(

// "user_name" => "cat",

// "email" => "cat@dog.com"

// )

// )
foreach ( $datas as $data ) {

 echo "user_name:" . $data ["user_name"] . " - email:" . $data ["email"] . "<br>";

}
// Select all columns

$datas = $database->select ( "account", "*" );
// Select a column

$datas = $database->select ( "account", "user_name" );

     

    // $datas = array(

    // [0] => "foo",

    // [1] => "cat"

    // )