基於php和mysql的簡單的dao類

複製代碼

SimpleDao.class

 //require_once('FirePHPCore/FirePHP.class.php');
 //$firephp = FirePHP::getInstance(真(真()的); // firefox 中的調試器
 class SimpleDao {
 private $_table = null;
 private static $_con = null;

 public function SimpleDao() {
 public function SimpleDao() {
 public function SimpleDao() {
 public function SimpleDao() {
 if ($this- >_con == null) {
 $this->_con = @mysql_connect("localhost", "root", "123456");
 if ($this->_con == FALSE ) {
 echo("連接資料庫伺服器失敗。");
 $this->_con = null;
 return;
 }
 //$firephp->log("new DAO物件");
 @mysql_select_db("swan", $this->_con);
 }
 }

 public function table($tablename) {
 $this -> _table = $表名;
 return $this;
 }

 public function query($sql) {
 $result = @mysql_query($sql);
 $ ret = [];
 if ($result) {
 while ($row = mysql_fetch_array($result)) {
 $ret[] = $row;
 }
 }
 return $ret;
 }

 public function get($where = null) {
 $sql = "select * from ".$this->_table;
 //$ sql = $ sql.$this->_getWhereString($where);
 //echo "[get]".$sql."";
 return $this->query($ sql);
 }

 public function insert($params) {
 if ($params == null || !is_array($params)) {
 return -1;
 }
 $ keys = $this->_getParamKeyString($params);
 $vals = $this->_getParamValString($ params);
 $sql = "insert into ".$this->_table."(".$ keys.") value(".$vals.")";
 //echo "[插入]".$sql."";
 $result = @mysql_query($sql);
 if (! $result) {
 return -1;
 }
 return @mysql_insert_id();
 }

 public function update($params, $where = n. ) {
 if ($params == null || !is_array($params)) {
 return -1;
 }
 $upvals = $this->_getUpdateString($params);
 $wheres = $this->_getWhereString($where);
 $sql = "update ".$this->_table." set ".$upvals." ".$wheres;
 //echo "[update]".$sql."";
 $ result = @mysql_query($sql);
 if (! $result) {
 return -1;
 }
 return @mysql_affected_rows();
 }

 public function delete($where) {
 $wheres = $this->_getWhereString($where);
 $wheres = $this->_getWhereString($where);
 $. ".$this->_table.$wheres;
 // 刪除echo "[delete]".$sql."";
 $result = @mysql_query($sql);
 if (! $result) {
 return -1;
 }
 return @mysql_affected_rows();
 }

 protected function _getParamKeyString($params) {
 protected array_keys( $params);
 return implode(",", $keys);
 }

 protected function _getParamValString($params) {
 $vals = arrayparaues($$ms);
 return "'".implode("','", $vals)."'";
 }

 private function _getUpdateString($params) {
 //echo "_getUpdateString ";
 $sql = "";
 if (is_array($params)) {
 $sql = $this->_getKeyValString($params, ",");
 }
 return $sql;
 }

 private function _getWhereString($params) {
 //echo "_getWhereString";
 $sql = "";
 if (is_array($params_array($params)_array($params)_array($params) ) ) {
 $sql = " where ";
 $where = $this->_getKeyValString($params, " and "); $sql = $sql.$where; } 回傳$sql; }

 private function _getKeyValString($params, $split) {
 $str = "";
 if (is_array($params)) {
 $paramArr = array();
 foreach($params as $key=>$val) {
 $valstr = $val;
 if (is_string($val)) {
 $valstr = "'".$val." ' ";
 }
 $paramArr[] = $key."=".$valstr;
 }
 $str = $str.implode($split, $paramArr);
 }
 return $str;
 }

 public function release() {
 @mysql_close();
 }
 }

 function($ table ) {
 return (new SimpleDao())->table($table);
 }
?>

使用SimpleDao的程式碼段

 include "test/simpledao.php";
 $dao = T("sw_post");
 $ result = $dao->get();//取得所有貼文
 $dao->release();
 echo json_encode($result);
?>


 include "test/simpledao.php";
 $dao = T("sw_post");
 // 更新標題，其中id=1
 $cnt = $dao-> ;update(array("title "=>"Hello REST2"), array("id"=>1));
 $dao->release();
 echo json_encode(array(" count"=>$cnt));
?>


 include "test/simpledao.php";
 $dao = T("sw_tag") ;
 // 插入新記錄
 $ cnt = $dao->insert(array("postid"=>4, "name"=>"測試TAG"));
 $dao ->release();
 echo json_encode(array("count "=>$cnt));
?>


 include "test/simpledao .php";
 $dao = T("sw_tag");
 // 從表中刪除name='測試TAG'
 $cnt = $dao->delete(array("name") =>"測試TAG"));
 $dao->release();
 echo json_encode(array("count"=>$cnt));
?>

複製代碼

複製代碼

複製代碼複製代碼 php、mysql、dao