PHP+JS实现批量删除数据功能示例

Mike

本文实例讲述了PHP+JS实现批量删除数据功能。分享给大家供大家参考，具体如下：
表单

<form id="form2" name="form2" method="post" action="del_product.php" >
<label>
<input type="checkbox" name="id[]" value="<?php echo $rs['id'];?>" />
</label>
<div><input type="button" value="全选" />
<input type="button" value="反选" />
<input type="submit" name="btnSave" value="删除"/></div>
</form>

JS

<script type="text/javascript" language="javascript">
  function selectBox(selectType){
  var checkboxis = document.getElementsByName("id[]");
  if(selectType == "reverse"){
    for (var i=0; i<checkboxis.length; i++){
    //alert(checkboxis[i].checked);
    checkboxis[i].checked = !checkboxis[i].checked;
    }
  }
  else if(selectType == "all")
  {
    for (var i=0; i<checkboxis.length; i++){
    //alert(checkboxis[i].checked);
    checkboxis[i].checked = true;
    }
  }
   }
</script>

del_product.php

<?php
include('checkadmin.php');
header('Content-Type: text/html; charset=utf-8');
if($_POST['btnSave']){
 if(empty($_POST['id'])){
  echo"<script>alert('必须选择一个产品,才可以删除!');history.back(-1);</script>";
  exit;
  }else{
/*如果要获取全部数值则使用下面代码*/
   $id= implode(",",$_POST['id']);
   $str="DELETE FROM `product` where id in ($id)";
   mysql_query($str);
  echo "<script>alert('删除成功！');window.location.href='product_list.php';</script>";
}
}
?>

附：php实现的数据库操作类
Db.php：

<?php
Class DB {
  private $link_id;
  private $handle;
  private $is_log;
  private $time;
  //构造函数
  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;
  }
  }
  //数据库连接
  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("数据库连接失败");
    }
  } else {
    $this->link_id = @mysql_pconnect($dbhost, $dbuser, $dbpw);
    if(!$this->link_id){
    $this->halt("数据库持久连接失败");
    }
  }
  if(!@mysql_select_db($dbname,$this->link_id)) {
    $this->halt('数据库选择失败');
  }
  @mysql_query("set names ".$charset);
  }
  //查询
  public function query($sql) {
  $this->write_log("查询 ".$sql);
  $query = mysql_query($sql,$this->link_id);
  if(!$query) $this->halt('Query Error: ' . $sql);
  return $query;
  }
  //获取一条记录（MYSQL_ASSOC，MYSQL_NUM，MYSQL_BOTH）
  public function get_one($sql,$result_type = MYSQL_ASSOC) {
  $query = $this->query($sql);
  $rt =& mysql_fetch_array($query,$result_type);
  $this->write_log("获取一条记录 ".$sql);
  return $rt;
  }
  //获取全部记录
  public function get_all($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++;
  }
  $this->write_log("获取全部记录 ".$sql);
  return $rt;
  }
  //插入
  public function insert($table,$dataArray) {
  $field = "";
  $value = "";
  if( !is_array($dataArray) || count($dataArray)<=0) {
    $this->halt('没有要插入的数据');
    return false;
  }
  while(list($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('没有要更新的数据');
    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;
  }
  //删除
  public function delete( $table,$condition="") {
  if( empty($condition) ) {
    $this->halt('没有设置删除的条件');
    return false;
  }
  $sql = "delete from $table where 1=1 and $condition";
  $this->write_log("删除 ".$sql);
  if(!$this->query($sql)) return false;
  return true;
  }
  //返回结果集
  public function fetch_array($query, $result_type = MYSQL_ASSOC){
  $this->write_log("返回结果集");
  return mysql_fetch_array($query, $result_type);
  }
  //获取记录条数
  public function num_rows($results) {
  if(!is_bool($results)) {
    $num = mysql_num_rows($results);
    $this->write_log("获取的记录条数为".$num);
    return $num;
  } else {
    return 0;
  }
  }
  //释放结果集
  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("释放结果集");
  }
  //获取最后插入的id
  public function insert_id() {
  $id = mysql_insert_id($this->link_id);
  $this->write_log("最后插入的id为".$id);
  return $id;
  }
  //关闭数据库连接
  protected function close() {
  $this->write_log("已关闭数据库连接");
  return @mysql_close($this->link_id);
  }
  //错误提示
  private function halt($msg='') {
  $msg .= "\r\n".mysql_error();
  $this->write_log($msg);
  die($msg);
  }
  //析构函数
  public function __destruct() {
  $this->free_result();
  $use_time = ($this-> microtime_float())-($this->time);
  $this->write_log("完成整个查询任务,所用时间为".$use_time);
  if($this->is_log){
    fclose($this->handle);
  }
  }
  //写入日志文件
  public function write_log($msg=''){
  if($this->is_log){
    $text = date("Y-m-d H:i:s")." ".$msg."\r\n";
    fwrite($this->handle,$text);
  }
  }
  //获取毫秒数
  public function microtime_float() {
  list($usec, $sec) = explode(" ", microtime());
  return ((float)$usec + (float)$sec);
  }
}
?>

config.db.php

<?php
  $db_config["hostname"] = "localhost"; //服务器地址
  $db_config["username"] = "root"; //数据库用户名
  $db_config["password"] = "123"; //数据库密码
  $db_config["database"] = "test"; //数据库名称
  $db_config["charset"] = "utf8";//数据库编码
  $db_config["pconnect"] = 1;//开启持久连接
  $db_config["log"] = 1;//开启日志
  $db_config["logfilepath"] = './';//开启日志
?>

希望本文所述对大家PHP程序设计有所帮助。
原文链接：http://blog.csdn.net/dongsg11200/article/details/8150157