Share a self-written PHP class for operating mysql database

This is a class I wrote myself. Everyone is welcome to discuss and guide. Some usage methods:
//Declare database objects
$Conn = new Mysql;
//Load database parameters
$Conn->Parameter (database server, database user name , database password, database name, database encoding, database table prefix [can be empty]);

The above code has already loaded this class file and initialized some database connection parameters!
The following are some basic method functions:
1. $Conn -> Table();
Select the data table, the parameter is the name of the data table
2. $Conn -> Field();
Select the field name, multiple Separate with commas, if this method is not called, all will be returned
3. $Conn -> Where();
Sql Where sub-statement, filter based on conditions
4. $Conn -> Order();
Sql sorting
5 , $Conn -> Page (int);
The parameter is a positive integer number. If this method is called, the records will be displayed in pages
6. $Conn -> Select (Boolean value);
Execute the query and return the query results, if any , it is a two-dimensional array. If none, it returns false. The parameter can be omitted. If omitted, the default is true. The returned array contains numeric elements
7, $Conn -> Del();
Delete records
8, $ Conn -> Edit(array());
Modify the record, the parameter is a one-dimensional array, the array key is the field name, and the array value is the field value
9. $Conn -> Into(array());
Add the record, The parameter is a one-dimensional array, the array key is the field name, and the array value is the field value.

The above methods can be called continuously, for example:

$Rult = $Conn -> Table('user') -> Select(); //The query returns all records of the user table
$Rult = $Conn -> Table( 'user') -> Page(20) -> Select();//The query returns all records in the user table and displays them in pages, 20 records per page;

There are also many method calls and tricks, which I will explain in detail later when I have time!

/*

 Database operation class
 Operation method: Facing objects
 Production time: 2013-3-10
 Current version: BqhMysql(mysqli)1.0.1
 Software author: Sad Song
 Contact QQ: 36975
 Contact number: 18907975647
 Email: admin@q128.com
 Contact address: Xiaosong Town, Shicheng County, Ganzhou City, Jiangxi Province
 Postal code: 342706

*/
class Mysql{
 private $LocalHost = ' localhost';
 private $LoaclUser = 'root';
 private $LocalPass = '123456';
 private $LocalBase = 'jiangxibaiyi';
 private $LocalCode = 'UTF8';
 private $PreFix;
 private $Conn;
 private $Start = 0;
 private $Error = false; //Database connection status, false means not connected or the connection is abnormal
 public $Err = true; //Sql execution result

 private $Table;
 private $Field = '*';
 private $Where = '';
 private $Order = '';

 private $PageSize = 0; //Page display->How many items per page, 0 means no paging display
 private $PageCount = 1; //Paging display->How many items are there in total
 private $PageNum = 1; //Paging display->How many pages are there in total
 private $PageNo = 1; //Paging display->What is the current page
 private $PageKey = 'page'; //Page url parameter key
 private $PageStart = 0; //Page display->The current item to return from


 private $Select;
 private $Rest;

 private $Result = false;//Result set

 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('Query failed, unable to load mysqli extension') : null;
 $this->Conn = @new mysqli( $this->LocalHost, $this->LoaclUser, $this->LocalPass, $this->LocalBase);
 $this->Error = mysqli_connect_errno() == 0 ? true : false;
 !$this->Error ? die('Database connection error, please check the database connection parameters') : 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 ) {//Data table
 $this -> null();
 $this->Table = '`' . $this->PreFix . $TableName . '`';
 return $this;
 }

 public function Field( $Array = '*' ) {//data Field
 !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 ) {//Condition
 $this->Where = ' where ' .$Where;
 return $this;
 }

 public function Order( $Order ) {//Sort
 $this->Order = ' order by ' . $Order;
 return $this;
 }

 public function pk( $key ) {//Paging url parameter key
 $this->PageKey = $key;
 return $this;
 }

 public function Page( $PageSize ) {//Paging
 $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";
	 $PageHtml .= '' . $this->PageCount . '条记录        ' . $this->PageNo . '/' . $this->PageNum . '页            ';
	 $this->PageNo <= 1 or $PageHtml .= "首页\nPageNo - 1) . "\">上一页\n";
	if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
	$this->PageNo >= $this->PageNum or $PageHtml .= "PageNo + 1) .  "\">下一页\nPageNum . "\">尾页\n";
	$PageHtml .= "

n";

return $PageHtml;

}

// Form processing begins

// Submit when judging form

public function FormIs( $Keys = 'mm' ) {

return $_POST[ $Keys ] == 1 ? true : false;

}

//Get data via post

public function _post( $Keys = '', $TiHuan = '') {

$Values ​​= strip_tags( $_POST[ $Keys ] );

$ this->FormArray[$Keys] = empty( $Values ​​) ? $TiHuan : $Values;

return empty( $Values ​​) ? $TiHuan : $Values;

}

//get method to get data

public function _get ( $Keys = '', $TiHuan = '') {

$Values ​​= strip_tags( $_GET[ $Keys ] );

return empty( $Values ​​) ? $TiHuan : $Values;

}

//Judge whether Is a number and not less than 0

public function IsNum( $Num = 0, $Mesg = 'Parameter must be a number' ) {

if ( is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ) {

return $Num;

}else{

die( $Mesg );

}

}

//Determine whether it is a number and not less than 0 and return True/False

public function NumBer( $Num = 0) {

return is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ? true : false;

}

//Detect that relevant data seems to exist

public function IsData($Types = true, $memg = 'data Already exists' ){

$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;

}

}

//Write Into database records

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 !empty( $this->Err ) ? false : true;

}

//Write data in array form

public function MsgBox( $Table = '', $Filed = array() ) {

$this -> Table($Table);

foreach( $Filed as $Key => $Val ) {

$this -> FormArray[ $Key ] = $Val;

}

return $this -> Into('No data obtained');

}

//Modify the database Record

public function Edit( $Array = array() ) {

if ( empty( $Array ) ) { $Array = $this -> FormArray; }

if ( !is_array( $Array ) || empty( $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 !empty( $this -> Err ) ? false : true;

}

}

//Delete database records

public function del (){

$Sql = 'delete from ' . $this->Table . $this->Where;

$this->Connection( $Sql );

unset($Sql);

return !empty( $this->Err ) ? false : true;

}

//Form processing ends

//Page jump

public function Msg( $Text = 'Operation successful' ) {

echo '';

echo '';

exit;

}

#Get the current system time

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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