封装的Mysql简易操作类如何实现高效数据库管理？

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php封装的MySQL简易操作类，基于PDO编写，代码风格简洁。+1. [文件] mysql.class.php ~4KB 下载 +?

public function __construct($server, $database, $user, $password) { parent::__construct(mysql:host=$server;dbname=$database, $user, $password); $this->server=$server; $this->database=$database; $this->user=$user; $this->password=$password; }

public function query($sql) { $this->sql=$sql; return $this->exec($sql); }

public function fetchAll() { $stmt=$this->query($this->sql); return $stmt->fetchAll(PDO::FETCH_ASSOC); }}?>

封装的Mysql简易操作类，基于PDO来写的，代码风格上有些无厘头。。。

1.[文件] mysql.class.php~4KB 下载(11)

<?php class mysql extends PDO{ public $server; public $database; public $user; public $password; public $sql; public function __construct($server,$database,$user,$password,$port=3306){ $this->server = $server; $this->database = $database; $this->user = $user; $this->password = $password; parent::__construct("mysql:host=$server;port=$port;dbname=$database",$user,$password); $this->query('SET NAMES utf8'); } public function drop($table){ $sql = 'DROP TABLE '.$table.';'; $re = $this->query($sql); if($re){ return true; }else{ return false; } } public function insert($table,$name,$value=null){ $sql = "INSERT INTO ".$table.'('; if($value == null){ $arrname = array_keys($name); $arrvalue = array_values($name); }else{ $arrname = explode('|', $name); $arrvalue = explode('|', $value); } for($i=0;$i<count($arrname);$i++){ if($i==count($arrname)-1){ $sql = $sql.$arrname[$i]; }else{ $sql = $sql.$arrname[$i].","; } } $sql = $sql.")VALUES("; for($i=0;$i<count($arrvalue);$i++){ if($i==count($arrvalue)-1){ $sql = $sql."'".$arrvalue[$i]."'"; }else{ $sql = $sql."'".$arrvalue[$i]."',"; } } $sql .=");"; $re = $this->query($sql); if($re){ return true; }else{ return false; } } public function delete($table,$Conditionsname,$Conditionsvalue=null){ if($Conditionsvalue!=null){ $sql = "DELETE FROM ".$table." WHERE ".$Conditionsname."='".$Conditionsvalue."';"; }else{ $sql = "DELETE FROM ".$table." WHERE "; $arrname = array_keys($Conditionsname); $arrvalue = array_values($Conditionsname); for($i=0;$i<count($arrname);$i++){ if($i==count($arrname)-1){ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."'"; }else{ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."',"; } } $sql.=';'; } $re = $this->query($sql); if($re){ return true; }else{ return false; } } public function select($table,$name,$Conditionsname,$Conditionsvalue=null){ if($Conditionsvalue!=null){ $sql = "SELECT ".$name." FROM ".$table." WHERE ".$Conditionsname."='".$Conditionsvalue."';"; }else{ $sql = "SELECT ".$name." FROM ".$table." WHERE "; $arrname = array_keys($Conditionsname); $arrvalue = array_values($Conditionsname); for($i=0;$i<count($arrname);$i++){ if($i==count($arrname)-1){ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."'"; }else{ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."' and "; } } $sql.=';'; } $re = $this->query($sql); $row = $re->fetch(); return $row[$name]; } public function update($table,$name,$value,$Conditionsname,$Conditionsvalue=null){ if($Conditionsvalue!=null){ $sql = "UPDATE ".$table." SET ".$name."= '".$value."' WHERE ".$Conditionsname."='".$Conditionsvalue."';"; }else{ $sql = "UPDATE ".$table." SET ".$name."= '".$value."' WHERE "; $arrname = array_keys($Conditionsname); $arrvalue = array_values($Conditionsname); for($i=0;$i<count($arrname);$i++){ if($i==count($arrname)-1){ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."'"; }else{ $sql.=$arrname[$i].'='."'".$arrvalue[$i]."' and "; } } $sql.=';'; } $re = $this->query($sql); if($re){ return true; }else{ return false; } } public function group($table,$name){ $sql = "SELECT ".$name." FROM ".$table.";"; $return = array(); $re = $this->query($sql); while($row = $re->fetch(PDO::FETCH_ASSOC)){ array_push($return,$row[$name]); } return $return; } public function fetchall($sql){ $return = array(); $re = $this->query($sql); while($row = $re->fetch(PDO::FETCH_ASSOC)){ array_push($return,$row); } return $return; } }