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/tech/wp/248340.html