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zblog php链式SQL查询数据库教程

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对zblog php主题进行二次开发时经常会查询调用数据库信息，但zblog php查询数据库并不是使用常规的SQL语句，而是使用链式SQL调用，因此很多刚涉及zblog php的用户不知道如何通过SQL对数据库进行查询。下面是博客吧结合zblog官方wiki给出的例子讲解一下如何运用链接SQL调用来查询数据库。

创建一外链式SQL实例
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$db = new SQLMySQL($GLOBALS['zbp']->db);

或：

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$db = $zbp->db->sql->get()
SQL常用语句对照
  • SELECT – $db ->select
  • INSERT – $db->insert
  • DELETE – $db->delete
  • DROP – $db->drop
  • CREATE – $db->create
  • UPDATE – $db->update

以此类推…

具体示例

如搜索log_ID从1~3的文件，SQL语句如下：

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SELECT * FROM  `zbp_post`  WHERE  (`log_ID` BETWEEN '1' AND '3')

转换成链式SQL代码，并执行获取数据，如下：

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$db = $zbp->db->sql->get();
$sql = $db ->select("zbp_post")
       ->where(array('between', 'log_ID', "1", "3"))
       ->sql;

提示：每一个where就是一个数组，如以下语句：

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SELECT * FROM  `zbp_post`  WHERE  (`log_ID` BETWEEN '1' AND '3') AND log_Type = '1'

那么链接SQL代码的where部分就应该如下：

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$db = $zbp->db->sql->get();
$sql = $db ->select("zbp_post")
       ->where(array('between', 'log_ID', "1", "3"),array('=','log_Type','1'))
       ->sql;
更多细节请根据以下测试代码自行参考使用吧
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<?php
class ClassSQLGlobalTest extends PHPUnit_Framework_TestCase
{
protected $backupGlobalsBlacklist = ['zbp'];
protected static $db = null;
 
public function setUp() {
/**
* Use MySQL to test Global
*/
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
}
 
public function tearDown() {
self::$db->reset();
self::$db = null;
}
 
/**
* Basic test cases
* 以下都是通过我们测试的案例。你可以将本文档放到本地，参考其中代码添加自己的案例进行测试
**/ 
public function testSelect() {
self::$db->select('zbp_post');
$this->assertEquals('SELECT * FROM  `zbp_post` ', self::$db->sql); //assertEquals用于比对拼接后的sql语句是否与原生sql一致
}
 
public function testInsert() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
self::$db->insert('zbp_post')->data(array('log_Title' => 'test'));
$this->assertEquals('INSERT INTO  `zbp_post`  (`log_Title`)  VALUES (  /'test/'  )', self::$db->sql);
}
 
public function testDelete() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
self::$db->delete('zbp_post');
$this->assertEquals('DELETE FROM  `zbp_post` ', self::$db->sql);
}
 
public function testDrop() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
self::$db->drop('zbp_post');
$this->assertEquals('DROP TABLE  `zbp_post` ', self::$db->sql);
}
 
public function testCreate() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
self::$db
->create('zbp_post')
->data(array(
'ID' => array('log_ID', 'integer', '', 0)
));
$this->assertEquals('CREATE TABLE IF NOT EXISTS zbp_post  ( log_ID int(11) NOT NULL AUTO_INCREMENT, PRIMARY KEY (log_ID) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;', self::$db->sql);
}
 
public function testUpdate() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
self::$db
->update('zbp_post')
->data(array('log_Title' => 'test'));
$this->assertEquals('UPDATE  `zbp_post`   SET log_Title = /'test/'', self::$db->sql);
}
 
public function testCount() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
$this->assertEquals('SELECT  COUNT(log_id) AS countid  FROM  `zbp_post` ', self::$db
->select("zbp_post")
->count('log_id', 'countid')
->sql
);
$this->assertEquals('SELECT  COUNT(log_id) AS countid  FROM  `zbp_post` ', self::$db
->select("zbp_post")
->count(array('log_id', 'countid'))
->sql
);
$this->assertEquals('SELECT  COUNT(log_id)  FROM  `zbp_post` ', self::$db
->select("zbp_post")
->count('log_id')
->sql
);
$this->assertEquals('SELECT  COUNT(log_id),log_authorid  FROM  `zbp_post` ', self::$db
->select("zbp_post")
->count('log_id')
->column('log_authorid')
->sql
);
}
 
 
public function testWhere() {
self::$db = new SQLMySQL($GLOBALS['zbp']->db);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  `log_ID` = /'1/' ',
self::$db
->select("zbp_post")
->where(array('=', 'log_ID', "1"))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  `log_ID` = /'1/' ',
self::$db
->select("zbp_post")
->where(' `log_ID` = /'1/' ')
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  EXISTS ( SELECT 1 ) ',
self::$db
->select("zbp_post")
->where(array('exists', 'SELECT 1'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  `log_ID` = /'1/' ',
self::$db
->select("zbp_post")
->where(array('=', 'log_ID', "1"))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (`log_ID` BETWEEN /'1/' AND /'3/') ',
self::$db
->select("zbp_post")
->where(array('between', 'log_ID', "1", "3"))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND ( (`log_Title` LIKE /'%Test%/') ) )',
self::$db
->select("zbp_post")
->where(array('search', 'log_Title', "Test"))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND ( `log_ID` = /'1/'  OR  `log_Title` = /'2/' ) )',
self::$db
->select("zbp_post")
->where(array('array',
array(
array('log_ID', '1'),
array('log_Title', '2')
)
))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND ( `log_ID` <> /'1/'  OR  `log_Title` <> /'2/' ) )',
self::$db
->select("zbp_post")
->where(array('not array',
array(
array('log_ID', '1'),
array('log_Title', '2')
)
))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND ( `log_ID` LIKE /'1/'  OR  `log_Title` LIKE /'2/' ) )',
self::$db
->select("zbp_post")
->where(array('like array',
array(
array('log_ID', '1'),
array('log_Title', '2')
)
))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND ( `log_ID` ILIKE /'1/'  OR  `log_Title` ILIKE /'2/' ) )',
self::$db
->select("zbp_post")
->where(array('ilike array',
array(
array('log_ID', '1'),
array('log_Title', '2')
)
))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  ((1 = 1) AND (`log_ID` IN ( /'1/' ,  /'2/' ,  /'3/' ,  /'4/' ) ) )',
self::$db
->select("zbp_post")
->where(array('IN', 'log_ID', array(1, 2, 3, 4)))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (log_ID IN ( /'1/' ,  /'2/' ,  /'3/' ,  /'4/' )) ',
self::$db
->select("zbp_post")
->where(array('IN', 'log_ID', ' /'1/' ,  /'2/' ,  /'3/' ,  /'4/' '))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE (`log_Meta` LIKE /'%s:10:/"meta_Value/";%/')',
self::$db
->select("zbp_post")
->where(array('META_NAME', 'log_Meta', 'meta_Value'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE (`log_Meta` LIKE /'%s:9:/"meta_Name/";s:10:/"meta_Value/"%/')',
self::$db
->select("zbp_post")
->where(array('META_NAMEVALUE', 'log_Meta', 'meta_Name', 'meta_Value'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE 1=1',
self::$db
->select("zbp_post")
->where(array('CUSTOM', '1=1'))
->sql
);
}
 
public function testOrderby() {
$this->assertEquals('SELECT * FROM  `zbp_post`  ORDER BY bbb desc, aaa ',
self::$db
->select("zbp_post")
->orderBy(array(array('bbb' => 'desc'), 'aaa'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  ORDER BY bbb desc, aaa ',
self::$db
->select("zbp_post")
->orderBy(array('bbb' => 'desc'), 'aaa')
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  ORDER BY aaaa ',
self::$db
->select("zbp_post")
->orderBy('aaaa')
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  ORDER BY a , b , c ',
self::$db
->select("zbp_post")
->orderBy(array('a', 'b', 'c'))
->sql
);
}
 
public function testGroupBy() {
$this->assertEquals('SELECT * FROM  `zbp_post`  GROUP BY bbb, aaa',
self::$db
->select("zbp_post")
->groupBy(array('bbb', 'aaa'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  GROUP BY bbb, aaa',
self::$db
->select("zbp_post")
->groupBy('bbb', 'aaa')
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  GROUP BY aaaa',
self::$db
->select("zbp_post")
->groupBy('aaaa')
->sql
);
 
}
 
public function testHaving() {
$this->assertEquals('SELECT * FROM  `zbp_post`  HAVING   bbb > 0 AND aaa < 0',
self::$db
->select("zbp_post")
->having(array('bbb > 0', 'aaa < 0'))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  HAVING   bbb > 0 AND aaa < 0',
self::$db
->select("zbp_post")
->having('bbb > 0', 'aaa < 0')
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  HAVING   aaaa > 0',
self::$db
->select("zbp_post")
->having('aaaa > 0')
->sql
);
}
 
public function testLimit() {
$this->assertEquals('SELECT * FROM  `zbp_post`  LIMIT 5',
self::$db
->select("zbp_post")
->limit(5)
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  LIMIT 1 OFFSET 10',
self::$db
->select("zbp_post")
->limit(10, 1)
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  LIMIT 1 OFFSET 10',
self::$db
->select("zbp_post")
->limit(array(10, 1))
->sql
);
}
 
public function testColumn() {
$this->assertEquals('SELECT  *  FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->column('*')
->sql
);
$this->assertEquals('SELECT  * AS sum,log_Content AS content,log_AuthorID AS author,log_Title,log_PostTime,log_ID AS ID  FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->column(array('*', 'sum'))
->column(array(array('log_Content', 'content'), array('log_AuthorID', 'author')))
->column('log_Title', 'log_PostTime', array('log_ID', 'ID'))
->sql
);
}
 
public function testOption() {
$this->assertEquals('SELECT * FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->option(array('test' => 'test'))
->sql
);
}
 
public function testInvalid() {
$this->assertEquals('SELECT * FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->orderBy(null)
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->groupBy(null)
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post` ',
self::$db
->select("zbp_post")
->having(null)
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('array', null))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('IN', 'log_ID', null))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('IN', 'log_ID', array()))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('array', array()))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('array', array()))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('meta_namevalue', array()))
->sql
);
$this->assertEquals('SELECT * FROM  `zbp_post`  WHERE  (1 = 1) ',
self::$db
->select("zbp_post")
->where(array('meta_name', array()))
->sql
);
}
 
/**
* @expectedException        Exception
* @expectedExceptionMessage Unimplemented fuck
*/
public function testExpectionInCall() {
self::$db->fuck();
}
}
?>
扩展：其它的用法
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global $zbp;
$sql = $zbp->db->sql->Select(
$zbp->table['Comment'],
array('COUNT(comm_ID) AS cnt, comm_Name, comm_HomePage , comm_Email'),
array(
array('<>', 'comm_Name', '访客'),
array('=', 'comm_AuthorID', 0),			
array('CUSTOM', '1=1 GROUP BY comm_HomePage')
),
array('comm_PostTime' => 'DESC'),
10,
null
);

zblog wiki：https://wiki.zblogcn.com/doku.php?id=zblogphp:development:features:1.5:chainquery

原创文章，作者：745907710，如若转载，请注明出处：https://blog.ytso.com/248340.html

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