PHP write MySQL operation class

File:MySQL.class.PHP<?PHPerror_reporting(E_all^e_deprecated);/*MySQL Operation class * 1. Connect to the database * 2. Select the library that needs to be manipulated * 3. Set the encoding of the operation * 4. Search and delete * Query in two cases: * 1. Query one data: Execute once mysql_fetch_assoc* 2. Query multi-hop data: Perform multiple Mysql_ fetch_assoc* 5. Closing the database*/class MySQL { Public $hostname;//MySQL host Public $username;//MySQL user name Public $password;//mysql Password Public $conn;//Connection Identifiers Public $dbname;//database name of the operation Public $charset;//Action encoding//initializationfunction__construct ($hostname,$username,$password,$dbname,$charset) {$this->hostname =$hostname;$this->username =$username;$this->password =$password;$this->dbname =$dbname;$this->charset =$charset;//Previous Way//Connect to database$this->conn =mysql_connect($this->hostname,$this->username,$this-password);//Select the Operational databasemysql_select_db($this->dbname,$this-conn);//now the way to connect the database and select the Operational database//$this->conn = Mysqli_connect ($this->hostname, $this->username, $this- Password, $this->dbname)//or die (Mysql_error ());//3. Encoding of the set operation$this->query ("Set Names").$this->charset. "'");}//methods for executing SQL statementsfunctionQuery$sql){return mysql_query($sql,$this-conn);}//AddfunctionAdd$table,$set){$sql= "INSERT INTO {$table} set {$set}";$result=$this->query ($sql);return $result;}//ModifyfunctionEdit$table,$set,$where){$sql= "Update {$table} set {$set} WHERE {$where}";$result=$this->query ($sql);return $result;}//DeletefunctionDel$table,$where){$sql= "Delete from {$table} WHERE {$where}";$result=$this->query ($sql);return $result;}//querying a single piece of datafunctionFind$table,$where="",$fields="*",$order=""){$where=Empty($where) ? "": "where".$where;$order=Empty($order) ? "": "Order By".$order;//$limit = Empty ($limit)? "": "Limit". $limit;$sql= "SELECT {$fields} from {$table} {$where} {$order} Limit 1 ";$query=$this->query ($sql);$row=Mysql_fetch_assoc($query);return $row;}//querying more than one piece of datafunctionSelect$table,$where="",$fields="*",$order="",$limit=""){$where=Empty($where) ? "": "where".$where;$order=Empty($order) ? "": "Order By".$order;$limit=Empty($limit) ? "": "Limit".$limit;$sql= "SELECT {$fields} from {$table} {$where} {$order} {$limit} ";$query=$this->query ($sql);$result=Array(); while($row=Mysql_fetch_assoc($query)){//Add the value of $row to the array of $result$result[] =$row;}return $result;}//Recycling Resourcesfunction__destruct () {Mysql_close($this-conn);}}?>file 2:ceshi.PHP<?PHPinclude"Mysql.class.php";$db=New MySQL("localhost", "root", "" "," Test "," GBK ");//perform Add//$db->add ("Test", "id=", uid= ' sky ', Regdate=now (), remark= ' student1 '),//execute Modify//$db->edit ("Test", " Id= ' ", uid= ' Nono ', Regdate=now (), remark= ' Programmer '", "Id= ' 22");//Perform delete//$db->del ("Test", "Id= ' 23");//Perform find//$rs = $ Db->find ("Test", "id=3", "Uid,remark", "desc"),//print_r ($RS);//Perform multiple lookups$rs=$db->select ("Test");Print_r($rs);?>

PHP write MySQL operation class