zblog php链式SQL查询数据库教程
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
1 | $db = new SQLMySQL($GLOBALS['zbp']->db); |
或：
1 | $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：
1 | 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：
1 2 3 4 | $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：
1 | 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：
1 2 3 4 | $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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 | <?phpclass 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
1 2 3 4 5 6 7 8 9 10 11 12 13 | 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 |
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