?php
include('checkadmin.php');
header('Content-Type: text/html; charset=utf-8');
if($_POST['btnSave']){
if(empty($_POST['id'])){
echo"script>alert('必須選擇一個產品,才可以刪除!');history.back(-1);/script>";
exit;
}else{
/*如果要獲取全部數值則使用下面代碼*/
$id= implode(",",$_POST['id']);
$str="DELETE FROM `product` where id in ($id)";
mysql_query($str);
echo "script>alert('刪除成功！');window.location.href='product_list.php';/script>";
}
}
?>
?php
Class DB {
private $link_id;
private $handle;
private $is_log;
private $time;
//構造函數
public function __construct() {
$this->time = $this->microtime_float();
require_once("config.db.php");
$this->connect($db_config["hostname"], $db_config["username"], $db_config["password"], $db_config["database"], $db_config["pconnect"]);
$this->is_log = $db_config["log"];
if($this->is_log){
$handle = fopen($db_config["logfilepath"]."dblog.txt", "a+");
$this->handle=$handle;
}
}
//數據庫連接
public function connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0,$charset='utf8') {
if( $pconnect==0 ) {
$this->link_id = @mysql_connect($dbhost, $dbuser, $dbpw, true);
if(!$this->link_id){
$this->halt("數據庫連接失敗");
}
} else {
$this->link_id = @mysql_pconnect($dbhost, $dbuser, $dbpw);
if(!$this->link_id){
$this->halt("數據庫持久連接失敗");
}
}
if(!@mysql_select_db($dbname,$this->link_id)) {
$this->halt('數據庫選擇失敗');
}
@mysql_query("set names ".$charset);
}
//查詢
public function query($sql) {
$this->write_log("查詢 ".$sql);
$query = mysql_query($sql,$this->link_id);
if(!$query) $this->halt('Query Error: ' . $sql);
return $query;
}
//獲取一條記錄（MYSQL_ASSOC，MYSQL_NUM，MYSQL_BOTH）
public function get_one($sql,$result_type = MYSQL_ASSOC) {
$query = $this->query($sql);
$rt = mysql_fetch_array($query,$result_type);
$this->write_log("獲取一條記錄 ".$sql);
return $rt;
}
//獲取全部記錄
public function get_all($sql,$result_type = MYSQL_ASSOC) {
$query = $this->query($sql);
$i = 0;
$rt = array();
while($row = mysql_fetch_array($query,$result_type)) {
$rt[$i]=$row;
$i++;
}
$this->write_log("獲取全部記錄 ".$sql);
return $rt;
}
//插入
public function insert($table,$dataArray) {
$field = "";
$value = "";
if( !is_array($dataArray) || count($dataArray)=0) {
$this->halt('沒有要插入的數據');
return false;
}
while(list($key,$val)=each($dataArray)) {
$field .="$key,";
$value .="'$val',";
}
$field = substr( $field,0,-1);
$value = substr( $value,0,-1);
$sql = "insert into $table($field) values($value)";
$this->write_log("插入 ".$sql);
if(!$this->query($sql)) return false;
return true;
}
//更新
public function update( $table,$dataArray,$condition="") {
if( !is_array($dataArray) || count($dataArray)=0) {
$this->halt('沒有要更新的數據');
return false;
}
$value = "";
while( list($key,$val) = each($dataArray))
$value .= "$key = '$val',";
$value .= substr( $value,0,-1);
$sql = "update $table set $value where 1=1 and $condition";
$this->write_log("更新 ".$sql);
if(!$this->query($sql)) return false;
return true;
}
//刪除
public function delete( $table,$condition="") {
if( empty($condition) ) {
$this->halt('沒有設置刪除的條件');
return false;
}
$sql = "delete from $table where 1=1 and $condition";
$this->write_log("刪除 ".$sql);
if(!$this->query($sql)) return false;
return true;
}
//返回結果集
public function fetch_array($query, $result_type = MYSQL_ASSOC){
$this->write_log("返回結果集");
return mysql_fetch_array($query, $result_type);
}
//獲取記錄條數
public function num_rows($results) {
if(!is_bool($results)) {
$num = mysql_num_rows($results);
$this->write_log("獲取的記錄條數為".$num);
return $num;
} else {
return 0;
}
}
//釋放結果集
public function free_result() {
$void = func_get_args();
foreach($void as $query) {
if(is_resource($query) get_resource_type($query) === 'mysql result') {
return mysql_free_result($query);
}
}
$this->write_log("釋放結果集");
}
//獲取最后插入的id
public function insert_id() {
$id = mysql_insert_id($this->link_id);
$this->write_log("最后插入的id為".$id);
return $id;
}
//關閉數據庫連接
protected function close() {
$this->write_log("已關閉數據庫連接");
return @mysql_close($this->link_id);
}
//錯誤提示
private function halt($msg='') {
$msg .= "\r\n".mysql_error();
$this->write_log($msg);
die($msg);
}
//析構函數
public function __destruct() {
$this->free_result();
$use_time = ($this-> microtime_float())-($this->time);
$this->write_log("完成整個查詢任務,所用時間為".$use_time);
if($this->is_log){
fclose($this->handle);
}
}
//寫入日志文件
public function write_log($msg=''){
if($this->is_log){
$text = date("Y-m-d H:i:s")." ".$msg."\r\n";
fwrite($this->handle,$text);
}
}
//獲取毫秒數
public function microtime_float() {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
}
?>
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