PHP实现的mysql操作类【MySQL与MySQLi方式】
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
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 $message.'
'.$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:
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
!empty( $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 = empty( $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 = $this->Result;
return empty($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 = $this->Result;
return empty($DataBase) ? false : $DataBase;
}
public function executes( $Sql = '' ){
$this->Connection( $Sql );
return $this->Rest;
}
public function exists( $T = '', $F = '', $W = ''){
if ( empty( $F ) ) { return 0; }
$cmd = empty( $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 ( empty( $F ) ) { return 0; }
$cmd = empty( $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 = $this->Result;
return empty($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');
!empty( $Action ) or $Action = 'index';
$Module = $this -> get('module');
!empty( $Module ) or $Module = 'index';
$NavUrl = '/' . $Module . '/' . $Action . '/' . $this -> PageKey .'/';
$NaIndex = '/' . $Module . '/' . $Action;
$PageHtml = "\n