<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP version 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available through the world-wide-web at the following url: |
// | http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | [email protected] so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Original Author <[email protected]> |
// | Your Name <[email protected]> |
// +----------------------------------------------------------------------+
//
// $Id:$
class pdomysql {
public $dbtype = ‘mysql‘;
public $dbhost = ‘127.0.0.1‘;
public $dbport = ‘3306‘;
public $dbname = ‘test‘;
public $dbuser = ‘root‘;
public $dbpass = ‘‘;
public $charset = ‘utf-8‘;
public $stmt = null;
public $DB = null;
public $connect = true; // 是否長连接
public $debug = true;
private $parms = array();
private $sql = array(
"db" => "",
"from" => "",
"where" => "",
"order" => "",
"limit" => ""
);
/**
* 构造函数
*/
public function __construct() {
$this->connect();
$this->DB->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
$this->DB->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
$this->execute(‘SET NAMES ‘ . $this->charset);
}
/**
* 析构函数
*/
public function __destruct() {
$this->close();
}
/**
* *******************基本方法开始********************
*/
/**
* 作用:连結数据库
*/
public function connect() {
try {
$this->DB = new PDO($this->dbtype . ‘:host=‘ . $this->dbhost . ‘;port=‘ . $this->dbport . ‘;dbname=‘ . $this->dbname, $this->dbuser, $this->dbpass, array(
PDO::ATTR_PERSISTENT => $this->connect
));
}
catch(PDOException $e) {
die("Connect Error Infomation:" . $e->getMessage());
}
}
/**
* 关闭数据连接
*/
public function close() {
$this->DB = null;
}
/**
* 對字串進行转義
*/
public function quote($str) {
return $this->DB->quote($str);
}
/**
* 作用:获取数据表里的欄位
* 返回:表字段结构
* 类型:数组
*/
public function getFields($table) {
$this->stmt = $this->DB->query("DESCRIBE $table");
$result = $this->stmt->fetchAll(PDO::FETCH_ASSOC);
$this->stmt = null;
return $result;
}
/**
* 作用:获得最后INSERT的主鍵ID
* 返回:最后INSERT的主鍵ID
* 类型:数字
*/
public function getLastId() {
return $this->DB->lastInsertId();
}
/**
* 作用:執行INSERT\UPDATE\DELETE
* 返回:执行語句影响行数
* 类型:数字
*/
public function execute($sql) {
$this->getPDOError($sql);
return $this->DB->exec($sql);
}
/**
* 获取要操作的数据
* 返回:合併后的SQL語句
* 类型:字串
*/
private function getCode($table, $args) {
$code = ‘‘;
if (is_array($args)) {
foreach ($args as $k => $v) {
if ($v == ‘‘) {
continue;
}
$code.= "`$k`=‘$v‘,";
}
}
$code = substr($code, 0, -1);
return $code;
}
public function optimizeTable($table) {
$sql = "OPTIMIZE TABLE $table";
$this->execute($sql);
}
/**
* 执行具体SQL操作
* 返回:运行結果
* 类型:数组
*/
private function _fetch($sql, $type) {
$result = array();
$this->stmt = $this->DB->query($sql);
$this->getPDOError($sql);
$this->stmt->setFetchMode(PDO::FETCH_ASSOC);
switch ($type) {
case ‘0‘:
$result = $this->stmt->fetch();
break;
case ‘1‘:
$result = $this->stmt->fetchAll();
break;
case ‘2‘:
$result = $this->stmt->rowCount();
break;
}
$this->stmt = null;
return $result;
}
/**
* *******************基本方法結束********************
*/
/**
* *******************Sql操作方法开始********************
*/
/**
* 作用:插入数据
* 返回:表內記录
* 类型:数组
* 參数:$db->insert(‘$table‘,array(‘title‘=>‘Zxsv‘))
*/
public function add($table, $args) {
$sql = "INSERT INTO `$table` SET ";
$code = $this->getCode($table, $args);
$sql.= $code;
return $this->execute($sql);
}
/**
* 修改数据
* 返回:記录数
* 类型:数字
* 參数:$db->up($table,array(‘title‘=>‘Zxsv‘),array(‘id‘=>‘1‘),$where
* =‘id=3‘);
*/
public function up($table, $args, $where) {
$code = $this->getCode($table, $args);
$sql = "UPDATE `$table` SET ";
$sql.= $code;
$sql.= " Where $where";
return $this->execute($sql);
}
/**
* 作用:刪除数据
* 返回:表內記录
* 类型:数组
* 參数:$db->del($table,$condition = null,$where =‘id=3‘)
*/
public function del($table, $where) {
$sql = "DELETE FROM `$table` Where $where";
return $this->execute($sql);
}
/**
* 作用:获取單行数据
* 返回:表內第一条記录
* 类型:数组
* 參数:$db->fetOne($table,$condition = null,$field = ‘*‘,$where =‘‘)
*/
public function fetOne($table, $field = ‘*‘, $where = false) {
$sql = "SELECT {$field} FROM `{$table}`";
$sql.= ($where) ? " WHERE $where" : ‘‘;
return $this->_fetch($sql, $type = ‘0‘);
}
/**
* 作用:获取所有数据
* 返回:表內記录
* 类型:二維数组
* 參数:$db->fetAll(‘$table‘,$condition = ‘‘,$field = ‘*‘,$orderby = ‘‘,$limit
* = ‘‘,$where=‘‘)
*/
public function fetAll($table, $field = ‘*‘, $orderby = false, $where = false) {
$sql = "SELECT {$field} FROM `{$table}`";
$sql.= ($where) ? " WHERE $where" : ‘‘;
$sql.= ($orderby) ? " ORDER BY $orderby" : ‘‘;
return $this->_fetch($sql, $type = ‘1‘);
}
/**
* 作用:获取單行数据
* 返回:表內第一条記录
* 类型:数组
* 參数:select * from table where id=‘1‘
*/
public function getOne($sql) {
return $this->_fetch($sql, $type = ‘0‘);
}
/**
* 作用:获取所有数据
* 返回:表內記录
* 类型:二維数组
* 參数:select * from table
*/
public function getAll($sql) {
return $this->_fetch($sql, $type = ‘1‘);
}
/**
* 作用:获取首行首列数据
* 返回:首行首列欄位值
* 类型:值
* 參数:select `a` from table where id=‘1‘
*/
public function scalar($sql, $fieldname) {
$row = $this->_fetch($sql, $type = ‘0‘);
return $row[$fieldname];
}
/**
* 获取記录总数
* 返回:記录数
* 类型:数字
* 參数:$db->fetRow(‘$table‘,$condition = ‘‘,$where =‘‘);
*/
public function fetRowCount($table, $field = ‘*‘, $where = false) {
$sql = "SELECT COUNT({$field}) AS num FROM $table";
$sql.= ($where) ? " WHERE $where" : ‘‘;
return $this->_fetch($sql, $type = ‘0‘);
}
/**
* 获取記录总数
* 返回:記录数
* 类型:数字
* 參数:select count(*) from table
*/
public function getRowCount($sql) {
return $this->_fetch($sql, $type = ‘2‘);
}
//链式操作开始
public function from($tableName) {
$this->sql["from"] = "FROM " . $tableName;
return $this;
}
public function db($tableName) {
$this->sql["db"] = $tableName;
return $this;
}
public function where($_where = ‘1=1‘) {
$this->sql["where"] = "WHERE " . $_where;
return $this;
}
public function order($_order = ‘id DESC‘) {
$this->sql["order"] = "ORDER BY " . $_order;
return $this;
}
public function limit($_limitstart="30",$_limitend = ‘0‘) {
if ($_limitend=="0"){
$this->sql["limit"] = "LIMIT 0," . $_limitstart;
}else{
$this->sql["limit"] = "LIMIT $_limitstart," . $_limitend;
}
return $this;
}
/**
* 获取所有記录
* 返回:所有記录
* 类型:array
* 參数: $pdomysql->from(‘dbname‘)->limit(30)->where(‘1=1‘)->select();
*/
public function select($_select = ‘*‘) {
//return "SELECT " . $_select . " " . (implode(" ", $this->sql));
$sql="SELECT " . $_select . " " . (implode(" ", $this->sql));
return $this->_fetch($sql, $type = ‘1‘);
}
/**
* 获取一条記录
* 返回:一条記录
* 类型:array
* 參数: $pdomysql->from(‘dbname‘)->limit(30)->where(‘1=1‘)->find();
*/
public function find($_find = ‘*‘){
$this->sql[‘limit‘]=‘limit 1‘;
$sql="SELECT " . $_find . " " . (implode(" ", $this->sql));
return $this->_fetch($sql, $type = ‘0‘);
}
/**
* 插入一条数据
* 返回:执行结果
* 类型:bool
* 參数: $pdomysql->db(‘dbname‘)->insert(array(‘col1‘="sadsd"));
*/
public function insert($_insert=array()){
$table=$this->sql[‘db‘];
$sql = "INSERT INTO `$table` SET ";
$code = $this->getCode($table, $args);
$sql.= $code;
return $this->execute($sql);
}
/**
* 删除
* 返回:删除结果
* 类型:bool
* 參数: $pdomysql->from(‘dbname‘)->where(‘1=1‘)->delete();
*/
public function delete(){
$sql="DELETE " . (implode(" ", $this->sql));
return $this->execute($sql);
}
public function update(){
}
//链式操作end
/**
* *******************Sql操作方法結束********************
*/
/**
* *******************错误处理开始********************
*/
/**
* 設置是否为调试模式
*/
public function setDebugMode($mode = true) {
return ($mode == true) ? $this->debug = true : $this->debug = false;
}
/**
* 捕获PDO错误信息
* 返回:出错信息
* 类型:字串
*/
private function getPDOError($sql) {
$this->debug ? $this->errorfile($sql) : ‘‘;
if ($this->DB->errorCode() != ‘00000‘) {
$info = ($this->stmt) ? $this->stmt->errorInfo() : $this->DB->errorInfo();
echo ($this->sqlError(‘mySQL Query Error‘, $info[2], $sql));
exit();
}
}
private function getSTMTError($sql) {
$this->debug ? $this->errorfile($sql) : ‘‘;
if ($this->stmt->errorCode() != ‘00000‘) {
$info = ($this->stmt) ? $this->stmt->errorInfo() : $this->DB->errorInfo();
echo ($this->sqlError(‘mySQL Query Error‘, $info[2], $sql));
exit();
}
}
/**
* 寫入错误日志
*/
private function errorfile($sql) {
echo $sql . ‘<br />‘;
$errorfile = __DIR__ . ‘/dberrorlog.php‘;
$sql = str_replace(array(
"\n",
"\r",
"\t",
" ",
" ",
" "
) , array(
" ",
" ",
" ",
" ",
" ",
" "
) , $sql);
if (!file_exists($errorfile)) {
$fp = file_put_contents($errorfile, "<?PHP exit(‘Access Denied‘); ?>\n" . $sql);
} else {
$fp = file_put_contents($errorfile, "\n" . $sql, FILE_APPEND);
}
}
/**
* 作用:运行错误信息
* 返回:运行错误信息和SQL語句
* 类型:字符
*/
private function sqlError($message = ‘‘, $info = ‘‘, $sql = ‘‘) {
$html = ‘‘;
if ($message) {
$html.= $message;
}
if ($info) {
$html.= ‘SQLID: ‘ . $info;
}
if ($sql) {
$html.= ‘ErrorSQL: ‘ . $sql;
}
throw new Exception($html);
}
/**
* *******************错误处理結束********************
*/
}
原文地址：https://www.cnblogs.com/chbyl/p/10199146.html
时间： 2024-08-29 09:29:42