PHP实现的mysql操作类【MySQL与MySQLi方式】
发布:smiling 来源: PHP粉丝网 添加日期:2021-08-11 13:52:21 浏览: 评论:0
这篇文章主要介绍了PHP实现的mysql操作类,结合实例形式分析了MySQL与MySQLi方式连接与操作MySQL数据库的常用方法封装与使用技巧,需要的朋友可以参考下
本文实例讲述了PHP实现的mysql操作类,分享给大家供大家参考,具体如下:
首先是mysql方式
- <?php
- class ConnectionMySQL{
- //主机
- private $host="localhost";
- //数据库的username
- private $name="root";
- //数据库的password
- private $pass="";
- //数据库名称
- private $table="phptest";
- //编码形式
- private $ut="utf-8";
- //构造函数
- function __construct(){
- $this->ut=$ut;
- $this->connect();
- }
- //数据库的链接
- function connect(){
- $link=mysql_connect($this->host,$this->name,$this->pass) or die ($this->error());
- mysql_select_db($this->table,$link) or die("没该数据库:".$this->table);
- mysql_query("SET NAMES '$this->ut'");
- }
- function query($sql, $type = '') {
- if(!($query = mysql_query($sql))) $this->show('Say:', $sql);
- return $query;
- }
- function show($message = '', $sql = '') {
- if(!$sql) echo $message;
- else echo $message.'<br>'.$sql;
- }
- function affected_rows() {
- return mysql_affected_rows();
- }
- function result($query, $row) {
- return mysql_result($query, $row);
- }
- function num_rows($query) {
- return @mysql_num_rows($query);
- }
- function num_fields($query) {
- return mysql_num_fields($query);
- }
- function free_result($query) {
- return mysql_free_result($query);
- }
- function insert_id() {
- return mysql_insert_id();
- }
- function fetch_row($query) {
- return mysql_fetch_row($query);
- }
- function version() {
- return mysql_get_server_info();
- }
- function close() {
- return mysql_close();
- }
- //向$table表中插入值
- function fn_insert($table,$name,$value){
- $this->query("insert into $table ($name) value ($value)");
- }
- //根据$id值删除表$table中的一条记录
- function fn_delete($table,$id,$value){
- $this->query("delete from $table where $id=$value");
- echo "id为". $id." 的记录被成功删除!";
- }
- }
- $db = new ConnectionMySQL();
- $db->fn_insert('test','id,name,sex',"'','hongtenzone','M'");
- $db->fn_delete('test', 'id', 1);
- ?>
mysqli的方式:
- <?php
- class Mysql{
- private $LocalHost = 'localhost';
- private $LoaclUser = '';
- private $LocalPass = '';
- private $LocalBase = '';
- private $LocalCode = 'UTF8';
- private $PreFix;
- private $Conn;
- private $Start = 0;
- private $Error = false; //数据库连接状态, false表示未连接或连接不正常
- public $Err = true; //Sql执行结果
- private $Table;
- private $Field = '*';
- private $Where = '';
- private $Order = '';
- private $PageSize = 0; //分页显示->每页多少条,0为不分页显示
- private $PageCount = 1; //分页显示->总共有多少条
- private $PageNum = 1; //分页显示->总共有多少页
- private $PageNo = 1; //分页显示->当前第几页
- private $PageKey = 'page'; //分页url参数键
- private $PageStart = 0; //分页显示->当前从第几条开始返回
- private $Select;
- private $Rest;
- private $Result = false;//结果集
- public $FormArray = array();
- public $Instr_ID = 0;
- private $j = 0;
- public function Parameter($Loca, $Root, $Pass, $Base, $Code, $PreFix = ''){
- $this->LoaclUser = $Root;
- $this->LocalBase = $Base;
- $this->LocalCode = $Code;
- $this->LocalHost = $Loca;
- $this->LocalPass = $Pass;
- $this->PreFix = $PreFix;
- return $this;
- }
- private function Connection( $Sql ){
- !function_exists(mysqli_connect) ? die('查询失败,无法加载mysqli扩展') : null;
- $this->Conn = @new mysqli( $this->LocalHost, $this->LoaclUser, $this->LocalPass, $this->LocalBase);
- $this->Error = mysqli_connect_errno() == 0 ? true : false;
- !$this->Error ? die('数据库连接错误,请检查数据库连接参数') : null;
- $this->Conn->query('SET NAMES ' . $this->LocalCode);
- $this->Rest = $this->Conn->query($Sql);
- $this->Err = mysqli_error($this->Conn);
- $this->Instr_ID = mysqli_insert_id($this->Conn);
- $this->Rest->free_result;
- $this->Conn->close;
- $this -> FormArray = '';
- return $this;
- }
- public function null(){
- $this->PageSize = 0;
- //$this->PageCount = 1;
- $this->PageStart = 1;
- $this->Field = ' * ';
- $this->Select = '';
- unset($this->Table, $this->Where,$this->Order, $this->Result);
- }
- public function Table( $TableName ) {//数据表
- $this -> null();
- $this->Table = '`' . $this->PreFix . $TableName . '`';
- return $this;
- }
- public function Field( $Array = '*' ) {//数据字段
- !emptyempty( $this->Field ) ? $this->Field = '' : null;
- $Array = explode(',', $Array);
- foreach ( $Array as $field ) {
- $this->Field .= !$this->Start ? '`' . $field . '`' : ', `' . $field . '`';
- $this->Start++;
- }
- $this->Start = 0;
- return $this;
- }
- public function Where( $Where ) {//条件
- $this->Where = ' where ' .$Where;
- return $this;
- }
- public function Order( $Order ) {//排序
- $this->Order = ' order by ' . $Order;
- return $this;
- }
- public function pk( $key ) {//分页url参数键
- $this->PageKey = $key;
- return $this;
- }
- public function Page( $PageSize ) {//分页
- $this->PageSize = $PageSize;
- $this->PageNo = $this->get( $this->PageKey );
- $this->PageNo = emptyempty( $this->PageNo ) || !isset( $this->PageNo ) || !is_numeric( $this->PageNo ) || $this->PageNo < 1 ? 1 : $this->PageNo;
- return $this;
- }
- public function post( $Key, $Filter = true ){
- return $Filter ? strip_tags($_POST[$Key]) : $_POST[$Key];
- }
- public function get( $Key, $Filter = true ){
- return $Filter ? strip_tags($_GET[$Key]) : $_GET[$Key];
- }
- public function Sel(){
- $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
- $this->Connection( $this->Select );
- if ( $this->Rest->num_rows ) {
- while ( $Rs = $this->Rest->fetch_assoc() ) {
- $this->Result[] = $Rs;
- }
- }
- $DataBase = $this->Result;
- return emptyempty($DataBase) ? false : $DataBase;
- }
- public function querys( $Sql = '', $Type = 'not', $biao = false ) {
- $this->Select = $Sql;
- $this->Connection( $this->Select );
- if ( $this->Rest->num_rows ) {
- if ( !$biao ) {
- while ( $Rs = $this->Rest->fetch_array() ) {
- $this->Result[] = !preg_match('/^\d+$/i', $Type) ? $Rs : $Rs[ $Type ];
- }
- } else {
- while ( $Rs = $this->Rest->fetch_assoc() ) {
- $this->Result[] = $Rs;
- }
- }
- }
- $DataBase = $this->Result;
- return emptyempty($DataBase) ? false : $DataBase;
- }
- public function executes( $Sql = '' ){
- $this->Connection( $Sql );
- return $this->Rest;
- }
- public function exists( $T = '', $F = '', $W = ''){
- if ( emptyempty( $F ) ) { return 0; }
- $cmd = emptyempty( $W ) ? 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'`' : 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'` Where ' . $W;
- $this->Connection( $cmd );
- unset( $T, $F, $W, $cmd );
- $Rel = $this->Rest->fetch_array();
- return round( $Rel['baiyinum'], 2 );
- }
- public function ExistsTo( $Bili = 10000, $T = '', $F = '', $W = ''){
- if ( emptyempty( $F ) ) { return 0; }
- $cmd = emptyempty( $W ) ? 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'`' : 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'` Where ' . $W;
- $this->Connection( $cmd );
- unset( $T, $F, $W, $cmd );
- $Rel = $this->Rest->fetch_array();
- return round( $Rel['baiyinum'] * $Bili );
- }
- public function Select( $Type = true, $ListNum = 1 ){ //返回记录(数组形式, 返回条数)
- $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
- if ( is_numeric( $ListNum ) ) {
- if ( $this->PageSize > 0 ) {
- $this->Connection( $this->Select );//执行查询
- $this->PageCount = $this->Rest->num_rows;//取得记录总数
- $this->PageNum = ceil($this->PageCount / $this->PageSize); //总共有多少页
- $this->PageNo = $this->PageNo > $this->PageNum ? $this->PageNum : $this->PageNo;
- $this->PageStart = ( $this->PageNo - 1 ) * $this->PageSize; //当前从第几条开始返回
- $this->Select .= ' limit ' . $this->PageStart . ', ' .$this->PageSize; //重新构造sql语句
- } else {
- $this->Select .= ' limit ' . $ListNum; //重新构造sql语句
- }
- } else {
- $this->Select .= ' limit 1'; //重新构造sql语句
- }
- //echo $this->Select;
- $this->Connection( $this->Select );//再次执行查询
- if ( $this->Rest->num_rows ) {//如果记录存在
- if ( $Type ) {
- while ( $Rs = $this->Rest->fetch_array() ) {
- $this->Result[] = $Rs;
- }
- }else{
- while ( $Rs = $this->Rest->fetch_assoc() ) {
- $this->Result[] = $Rs;
- }
- }
- }
- if ( ( $ListNum == 1 or !is_numeric( $ListNum ) ) && !$this->PageSize) { $this->Result = $this->Result[0]; }
- $DataBase = $this->Result;
- return emptyempty($DataBase) ? false : $DataBase;
- }
- public function Num() { //返回记录总数
- $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
- $this->Connection( $this->Select );//执行查询
- return $this->Rest->num_rows;//取得记录总数
- }
- public function PageNav($NumNav = false ) { //分页
- $Action = $this -> get('action');
- !emptyempty( $Action ) or $Action = 'index';
- $Module = $this -> get('module');
- !emptyempty( $Module ) or $Module = 'index';
- $NavUrl = '/' . $Module . '/' . $Action . '/' . $this -> PageKey .'/';
- $NaIndex = '/' . $Module . '/' . $Action;
- $PageHtml = "\n<div class=\"pagenav\">";
- $PageHtml .= '<span>' . $this->PageCount . '条记录 ' . $this->PageNo . '/' . $this->PageNum . '页</span> ';
- $this->PageNo <= 1 or $PageHtml .= "<a href=\"" . $NaIndex . "\">首页</a>\n<a href=\"" . $NavUrl . ($this->PageNo - 1) . "\">上一页</a>\n";
- if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
- $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=\"" . $NavUrl. ($this->PageNo + 1) . "\">下一页</a>\n<a href=\"" . $NavUrl . $this->PageNum . "\">尾页</a>\n";
- $PageHtml .= "</div>\n";
- return $PageHtml;
- }
- private function NumPage( $Can = '' ) { //数字分页
- $NumHtml = '';
- $First = 1;
- $Last = $this->PageNum;
- if ( $this->PageNum > 5 ) {
- if ( $this->PageNo < $this->PageNum ) {
- $First = $this->PageNo - 2;
- $Last = $this->PageNo + 2;
- }else{
- $First = $this->PageNo - 4;
- $Last = $this->PageNum;
- }
- }
- if ( $First < 1 ) { $First = 1; $Last = $First + 4;}
- if ( $Last > $this->PageNum ) { $First = $this->PageNum - 4; $Last = $this->PageNum;}
- for( $i = $First; $i <= $Last; $i++) {
- $NumHtml .= $this->PageNo != $i ? "\n\t" . '<a href="' . $Can . $i . '" rel="external nofollow" >' . $i . '</a>' . "\n\t" : "\n\t" .'<a class="hover" disabled="disabled">' . $i . '</a>' . "\n\t";
- }
- unset($Can, $First, $i, $Last);
- return $NumHtml;
- }
- public function UserPage($NumNav = false, $PageName = 'index', $Mulu = 'user' ) { //会员中心分页
- $NavUrl = '/' . $Mulu . '/' . $PageName . '/' . $this->PageKey . '/';
- $PageHtml = "\n<div class=\"pagenav\">";
- $PageHtml .= '<span>' . $this->PageCount . '条记录 ' . $this->PageNo . '/' . $this->PageNum . '页</span> ';
- $this->PageNo <= 1 or $PageHtml .= "<a href=\"" . $NavUrl . "1\">首页</a>\n<a href=\"" . $NavUrl . ($this->PageNo - 1) . "\">上一页</a>\n";
- if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
- $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=\"" . $NavUrl. ($this->PageNo + 1) . "\">下一页</a>\n<a href=\"" . $NavUrl . $this->PageNum . "\">尾页</a>\n";
- $PageHtml .= "</div><div class=\"clear\"></div>\n";
- return $PageHtml;
- }
- //表单处理开始
- //判断表单时候提交
- public function FormIs( $Keys = 'mm' ) {
- return $_POST[ $Keys ] == 1 ? true : false;
- }
- //post方式获取数据
- public function _post( $Keys = '', $TiHuan = '') {
- $Values = strip_tags( $_POST[ $Keys ] );
- $this->FormArray[$Keys] = emptyempty( $Values ) ? $TiHuan : $Values;
- return emptyempty( $Values ) ? $TiHuan : $Values;
- }
- //get方法获取数据
- public function _get( $Keys = '', $TiHuan = '') {
- $Values = strip_tags( $_GET[ $Keys ] );
- return emptyempty( $Values ) ? $TiHuan : $Values;
- }
- //判断是否为数字并且不小于0
- public function IsNum( $Num = 0, $Mesg = '参数必须为数字' ) {
- if ( is_numeric( $Num ) && !emptyempty( $Num ) && $Num >= 0 ) {
- return $Num;
- }else{
- die( $Mesg );
- }
- }
- //判断是否为数字并且不小于0返回True/False
- public function NumBer( $Num = 0) {
- return is_numeric( $Num ) && !emptyempty( $Num ) && $Num >= 0 ? true : false;
- }
- //检测相关数据似乎存在
- public function IsData($Types = true, $memg = '数据已经存在' ){
- $this->Connection('select ' . $this->Field . ' from ' . $this->Table . $this->Where);
- if ( $Types ){
- $this->Rest->num_rows > 0 ? die( $memg ) : null;
- } else {
- return $this->Rest->num_rows;
- }
- }
- //写入数据库记录
- public function into( $Mesg = '' ){
- !is_array( $this->FormArray ) ? die( $Mesg ) : null;
- $Sql = 'insert into ' . $this->Table . ' (`';
- $I = 0;
- foreach ( $this->FormArray as $Key => $Val ){
- $Duan .= !$I ? $Key . '`' : ', `' . $Key . '`';
- if ( is_numeric( $Val ) ){
- $Vals .= !$I ? $Val : ', ' . $Val;
- }else{
- $Vals .= !$I ? '\'' . $Val . '\'' : ', \'' . $Val . '\'';
- }
- $I++;
- }
- $Sql .= $Duan . ') values (' . $Vals . ')';
- //@file_put_contents('1.sql', $Sql, FILE_APPEND);
- $this->Connection( $Sql );
- return !emptyempty( $this->Err ) ? false : true;
- }
- //数组形式写入数据
- public function MsgBox( $Table = '', $Filed = array() ) {
- $this -> Table($Table);
- foreach( $Filed as $Key => $Val ) {
- $this -> FormArray[ $Key ] = $Val;
- }
- return $this -> Into('未取得数据');
- }
- //修改数据库记录
- public function Edit( $Array = array() ) {
- if ( emptyempty( $Array ) ) { $Array = $this -> FormArray; }
- if ( !is_array( $Array ) || emptyempty( $Array ) ) {
- return false;
- } else {
- $Sql = 'update ' . $this -> Table . ' set ';
- $I = 0;
- $Sub = '';
- $Huan = array('-' => '[jian]', '+' => '[jia]', '*' => '[cheng]', '/' => '[chu]');
- $Zhan = array('[jian]' => '-', '[jia]' => '+', '[cheng]' => '*', '[chu]' => '/');
- foreach ( $Array as $Files => $Val ) {
- $Val = !is_numeric( $Val ) && !preg_match('/\`\w+\`\s*(\+|\-|\*|\/)/i', $Val) ? '\'' . $Val . '\'' : $Val;
- foreach ( $Huan as $key => $val ){
- $Val = str_replace($key, $val, $Val);
- }
- $duan = !$I ? '`' . $Files . '` = ' : ', `' . $Files . '` = ';
- $Sub .= $duan . $Val;
- $I++;
- }
- $Sql .= $Sub . $this -> Where;
- foreach ( $Zhan as $Fan => $Hui ) {
- $Sql = str_replace($Fan, $Hui, $Sql);
- }
- //echo $Sql; die;
- $this -> Connection( $Sql );
- unset( $Array, $duan, $Fan, $Files, $Huan, $Hui, $I, $key, $Sql, $Sub, $Val, $Zhan, $val );
- return !emptyempty( $this -> Err ) ? false : true;
- }
- }
- //删除数据库记录
- public function del(){
- $Sql = 'delete from ' . $this->Table . $this->Where;
- $this->Connection( $Sql );
- unset($Sql);
- return !emptyempty( $this->Err ) ? false : true;
- }
- //表单处理结束
- //页面跳转
- public function Msg( $Text = '操作成功' ) {
- echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
- echo '<script type="text/javascript">
- <!--
- alert("' . $Text . '");
- document.location="' . $_SERVER['HTTP_REFERER'] . '";
- //-->
- </script>';
- exit;
- }
- #取得系统当前时间
- public function Times(){
- return str_replace('-', '[jian]', date('Y-m-d H:i:s'));
- }
- #取得用户IP地址
- public function GetIP(){
- if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
- $ip = getenv("HTTP_CLIENT_IP");
- else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
- $ip = getenv("HTTP_X_FORWARDED_FOR");
- else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
- $ip = getenv("REMOTE_ADDR");
- else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
- $ip = $_SERVER['REMOTE_ADDR'];
- else
- $ip = "unknown";
- return($ip);
- }
- //最后关闭数据库连接
- public function Close(){
- !is_object( $this -> Conn ) or mysqli_close( $this -> Conn );
- }
- }
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