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PHP PDO_MYSQL 链式操作 非链式操作类

Wesley13

2021-10-11

1024 0 0
1<?php
2/* vim: set expandtab tabstop=4 shiftwidth=4: */
3// +----------------------------------------------------------------------+
4// | PHP version 5                                                        |
5// +----------------------------------------------------------------------+
6// | Copyright (c) 1997-2004 The PHP Group                                |
7// +----------------------------------------------------------------------+
8// | This source file is subject to version 3.0 of the PHP license,       |
9// | that is bundled with this package in the file LICENSE, and is        |
10// | available through the world-wide-web at the following url:           |
11// | http://www.php.net/license/3_0.txt.                                  |
12// | If you did not receive a copy of the PHP license and are unable to   |
13// | obtain it through the world-wide-web, please send a note to          |
14// | license@php.net so we can mail you a copy immediately.               |
15// +----------------------------------------------------------------------+
16// | Authors: Original Author <author@example.com>                        |
17// |          Your Name <you@example.com>                                 |
18// +----------------------------------------------------------------------+
19//
20// $Id:$
21
22class pdomysql {
23    public  $dbtype = 'mysql';
24    public  $dbhost = '127.0.0.1';
25    public  $dbport = '3306';
26    public  $dbname = 'test';
27    public  $dbuser = 'root';
28    public  $dbpass = '';
29    public  $charset = 'utf-8';
30    public  $stmt = null;
31    public  $DB = null;
32    public  $connect = true; // 是否長连接
33    public  $debug = true;
34    private  $parms = array();
35    private $sql = array(
36		"db" => "",
37        "from" => "",
38        "where" => "",
39        "order" => "",
40        "limit" => ""
41    );
42    /**
43     * 构造函数
44     */
45    public function __construct() {
46       
47        $this->connect();
48        $this->DB->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
49        $this->DB->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
50        $this->execute('SET NAMES ' . $this->charset);
51    }
52    /**
53     * 析构函数
54     */
55    public function __destruct() {
56        $this->close();
57    }
58    /**
59     * *******************基本方法开始********************
60     */
61    /**
62     * 作用:连結数据库
63     */
64    public function connect() {
65        try {
66            $this->DB = new PDO($this->dbtype . ':host=' . $this->dbhost . ';port=' . $this->dbport . ';dbname=' . $this->dbname, $this->dbuser, $this->dbpass, array(
67                PDO::ATTR_PERSISTENT => $this->connect
68            ));
69        }
70        catch(PDOException $e) {
71            die("Connect Error Infomation:" . $e->getMessage());
72        }
73    }
74    /**
75     * 关闭数据连接
76     */
77    public function close() {
78        $this->DB = null;
79    }
80    /**
81     * 對字串進行转義
82     */
83    public function quote($str) {
84        return $this->DB->quote($str);
85    }
86    /**
87     * 作用:获取数据表里的欄位
88     * 返回:表字段结构
89     * 类型:数组
90     */
91    public function getFields($table) {
92        $this->stmt = $this->DB->query("DESCRIBE $table");
93        $result = $this->stmt->fetchAll(PDO::FETCH_ASSOC);
94        $this->stmt = null;
95        return $result;
96    }
97    /**
98     * 作用:获得最后INSERT的主鍵ID
99     * 返回:最后INSERT的主鍵ID
100     * 类型:数字
101     */
102    public function getLastId() {
103        return $this->DB->lastInsertId();
104    }
105    /**
106     * 作用:執行INSERT\UPDATE\DELETE
107     * 返回:执行語句影响行数
108     * 类型:数字
109     */
110    public function execute($sql) {
111        $this->getPDOError($sql);
112        return $this->DB->exec($sql);
113    }
114    /**
115     * 获取要操作的数据
116     * 返回:合併后的SQL語句
117     * 类型:字串
118     */
119    private function getCode($table, $args) {
120        $code = '';
121        if (is_array($args)) {
122            foreach ($args as $k => $v) {
123                if ($v == '') {
124                    continue;
125                }
126                $code.= "`$k`='$v',";
127            }
128        }
129        $code = substr($code, 0, -1);
130        return $code;
131    }
132    public function optimizeTable($table) {
133        $sql = "OPTIMIZE TABLE $table";
134        $this->execute($sql);
135    }
136    /**
137     * 执行具体SQL操作
138     * 返回:运行結果
139     * 类型:数组
140     */
141    private function _fetch($sql, $type) {
142        $result = array();
143        $this->stmt = $this->DB->query($sql);
144        $this->getPDOError($sql);
145        $this->stmt->setFetchMode(PDO::FETCH_ASSOC);
146        switch ($type) {
147            case '0':
148                $result = $this->stmt->fetch();
149                break;
150
151            case '1':
152                $result = $this->stmt->fetchAll();
153                break;
154
155            case '2':
156                $result = $this->stmt->rowCount();
157                break;
158        }
159        $this->stmt = null;
160        return $result;
161    }
162    /**
163     * *******************基本方法結束********************
164     */
165    /**
166     * *******************Sql操作方法开始********************
167     */
168    /**
169     * 作用:插入数据
170     * 返回:表內記录
171     * 类型:数组
172     * 參数:$db->insert('$table',array('title'=>'Zxsv'))
173     */
174    public function add($table, $args) {
175        $sql = "INSERT INTO `$table` SET ";
176        $code = $this->getCode($table, $args);
177        $sql.= $code;
178        return $this->execute($sql);
179    }
180    /**
181     * 修改数据
182     * 返回:記录数
183     * 类型:数字
184     * 參数:$db->up($table,array('title'=>'Zxsv'),array('id'=>'1'),$where
185     * ='id=3');
186     */
187    public function up($table, $args, $where) {
188        $code = $this->getCode($table, $args);
189        $sql = "UPDATE `$table` SET ";
190        $sql.= $code;
191        $sql.= " Where $where";
192        return $this->execute($sql);
193    }
194    /**
195     * 作用:刪除数据
196     * 返回:表內記录
197     * 类型:数组
198     * 參数:$db->del($table,$condition = null,$where ='id=3')
199     */
200    public function del($table, $where) {
201        $sql = "DELETE FROM `$table` Where $where";
202        return $this->execute($sql);
203    }
204    /**
205     * 作用:获取單行数据
206     * 返回:表內第一条記录
207     * 类型:数组
208     * 參数:$db->fetOne($table,$condition = null,$field = '*',$where ='')
209     */
210    public function fetOne($table, $field = '*', $where = false) {
211        $sql = "SELECT {$field} FROM `{$table}`";
212        $sql.= ($where) ? " WHERE $where" : '';
213        return $this->_fetch($sql, $type = '0');
214    }
215    /**
216     * 作用:获取所有数据
217     * 返回:表內記录
218     * 类型:二維数组
219     * 參数:$db->fetAll('$table',$condition = '',$field = '*',$orderby = '',$limit
220     * = '',$where='')
221     */
222    public function fetAll($table, $field = '*', $orderby = false, $where = false) {
223        $sql = "SELECT {$field} FROM `{$table}`";
224        $sql.= ($where) ? " WHERE $where" : '';
225        $sql.= ($orderby) ? " ORDER BY $orderby" : '';
226        return $this->_fetch($sql, $type = '1');
227    }
228    /**
229     * 作用:获取單行数据
230     * 返回:表內第一条記录
231     * 类型:数组
232     * 參数:select * from table where id='1'
233     */
234    public function getOne($sql) {
235        return $this->_fetch($sql, $type = '0');
236    }
237    /**
238     * 作用:获取所有数据
239     * 返回:表內記录
240     * 类型:二維数组
241     * 參数:select * from table
242     */
243    public function getAll($sql) {
244        return $this->_fetch($sql, $type = '1');
245    }
246    /**
247     * 作用:获取首行首列数据
248     * 返回:首行首列欄位值
249     * 类型:值
250     * 參数:select `a` from table where id='1'
251     */
252    public function scalar($sql, $fieldname) {
253        $row = $this->_fetch($sql, $type = '0');
254        return $row[$fieldname];
255    }
256    /**
257     * 获取記录总数
258     * 返回:記录数
259     * 类型:数字
260     * 參数:$db->fetRow('$table',$condition = '',$where ='');
261     */
262    public function fetRowCount($table, $field = '*', $where = false) {
263        $sql = "SELECT COUNT({$field}) AS num FROM $table";
264        $sql.= ($where) ? " WHERE $where" : '';
265        return $this->_fetch($sql, $type = '0');
266    }
267    /**
268     * 获取記录总数
269     * 返回:記录数
270     * 类型:数字
271     * 參数:select count(*) from table
272     */
273    public function getRowCount($sql) {
274        return $this->_fetch($sql, $type = '2');
275    }
276	//链式操作开始
277    public function from($tableName) {
278        $this->sql["from"] = "FROM " . $tableName;
279        return $this;
280    }
281	public function db($tableName) {
282        $this->sql["db"] = $tableName;
283        return $this;
284    }
285    public function where($_where = '1=1') {
286        $this->sql["where"] = "WHERE " . $_where;
287        return $this;
288    }
289    public function order($_order = 'id DESC') {
290        $this->sql["order"] = "ORDER BY " . $_order;
291        return $this;
292    }
293    public function limit($_limitstart="30",$_limitend = '0') {
294		if ($_limitend=="0"){
295			$this->sql["limit"] = "LIMIT 0," . $_limitstart;
296		}else{
297			$this->sql["limit"] = "LIMIT $_limitstart," . $_limitend;
298		}
299        
300        return $this;
301    }
302	/**
303     * 获取所有記录
304     * 返回:所有記录
305     * 类型:array
306     * 參数: $pdomysql->from('dbname')->limit(30)->where('1=1')->select();
307     */
308    public function select($_select = '*') {
309        //return "SELECT " . $_select . " " . (implode(" ", $this->sql));
310        $sql="SELECT " . $_select . " " . (implode(" ", $this->sql));
311		return $this->_fetch($sql, $type = '1');
312    }
313	/**
314     * 获取一条記录
315     * 返回:一条記录
316     * 类型:array
317     * 參数: $pdomysql->from('dbname')->limit(30)->where('1=1')->find();
318     */
319	public function find($_find = '*'){
320		$this->sql['limit']='limit 1';
321		$sql="SELECT " . $_find . " " . (implode(" ", $this->sql));
322		return $this->_fetch($sql, $type = '0');
323	}
324	/**
325     * 插入一条数据
326     * 返回:执行结果
327     * 类型:bool
328     * 參数: $pdomysql->db('dbname')->insert(array('col1'="sadsd"));
329     */
330	public function insert($_insert=array()){
331		$table=$this->sql['db'];
332		$sql = "INSERT INTO `$table` SET ";
333        $code = $this->getCode($table, $args);
334        $sql.= $code;
335        return $this->execute($sql);
336	}
337	/**
338     * 删除
339     * 返回:删除结果
340     * 类型:bool
341     * 參数: $pdomysql->from('dbname')->where('1=1')->delete();
342     */
343	public function delete(){
344		$sql="DELETE  " . (implode(" ", $this->sql));
345		return $this->execute($sql);
346	}
347	public function update(){
348		
349	}
350	//链式操作end
351    /**
352     * *******************Sql操作方法結束********************
353     */
354    /**
355     * *******************错误处理开始********************
356     */
357    /**
358     * 設置是否为调试模式
359     */
360    public function setDebugMode($mode = true) {
361        return ($mode == true) ? $this->debug = true : $this->debug = false;
362    }
363    /**
364     * 捕获PDO错误信息
365     * 返回:出错信息
366     * 类型:字串
367     */
368    private function getPDOError($sql) {
369        $this->debug ? $this->errorfile($sql) : '';
370        if ($this->DB->errorCode() != '00000') {
371            $info = ($this->stmt) ? $this->stmt->errorInfo() : $this->DB->errorInfo();
372            echo ($this->sqlError('mySQL Query Error', $info[2], $sql));
373            exit();
374        }
375    }
376    private function getSTMTError($sql) {
377        $this->debug ? $this->errorfile($sql) : '';
378        if ($this->stmt->errorCode() != '00000') {
379            $info = ($this->stmt) ? $this->stmt->errorInfo() : $this->DB->errorInfo();
380            echo ($this->sqlError('mySQL Query Error', $info[2], $sql));
381            exit();
382        }
383    }
384    /**
385     * 寫入错误日志
386     */
387    private function errorfile($sql) {
388        echo $sql . '<br />';
389        $errorfile = __DIR__ . '/dberrorlog.php';
390        $sql = str_replace(array(
391            "\n",
392            "\r",
393            "\t",
394            "  ",
395            "  ",
396            "  "
397        ) , array(
398            " ",
399            " ",
400            " ",
401            " ",
402            " ",
403            " "
404        ) , $sql);
405        if (!file_exists($errorfile)) {
406            $fp = file_put_contents($errorfile, "<?PHP exit('Access Denied'); ?>\n" . $sql);
407        } else {
408            $fp = file_put_contents($errorfile, "\n" . $sql, FILE_APPEND);
409        }
410    }
411    /**
412     * 作用:运行错误信息
413     * 返回:运行错误信息和SQL語句
414     * 类型:字符
415     */
416    private function sqlError($message = '', $info = '', $sql = '') {
417        $html = '';
418        if ($message) {
419            $html.= $message;
420        }
421        if ($info) {
422            $html.= 'SQLID: ' . $info;
423        }
424        if ($sql) {
425            $html.= 'ErrorSQL: ' . $sql;
426        }
427        throw new Exception($html);
428    }
429    /**
430     * *******************错误处理結束********************
431     */
432}
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