php中删除非空目录实现代码

<?php
// 说明： 删除非空目录的解决方案

function removeDir($dirName)
{
    if(! is_dir($dirName))
    {
        return false;
    }
    $handle = @opendir($dirName);
    while(($file = @readdir($handle)) !== false)
    {
        if($file != '.' && $file != '..')
        {
            $dir = $dirName . '/' . $file;
            is_dir($dir) ? removeDir($dir) : @unlink($dir);
        }
    }
    closedir($handle);
 
    return rmdir($dirName) ;
}
?>

<?php

       require_once 'sqlTools.class.php';//封装类，可执行dql、dml语句

       $info=$_POST['info'];

       $sql="select name,password,email from user_500 where name like '%$info%' or password like '%$info%' or email like '%$info%'";

       $sqlTools=new  SqlTools();

       $res=$sqlTools->execute_dql($sql);

       while ($row=mysql_fetch_assoc($res)){

              $row['name']=preg_replace("/($info)/i","<b style="color:red">\1</b>",$row['name']);

              $row['password']=preg_replace("/($info)/i","<b style="color:red">\1</b>",$row['password']);

              $row['email']=preg_replace("/($info)/i","<b style="color:red">\1</b>",$row['email']);

              echo $row['name']."-->".$row['password']."-->".$row['email']."<br>";

       }   

?>

sqlTools.class.php的源代码：

<?php

       class SqlTools{

              private $host="localhost";

              private $dbname="test";

              private $dbuser="root";

              private $dbpwd="";

              private $conn;

              public function __construct(){

                     $this->conn=mysql_connect($this->host,$this->dbuser,$this->dbpwd);

                     if(!$this->conn){

                            die("连接数据库失败".mysql_error());

                     }

                     mysql_select_db($this->dbname,$this->conn) or die("找不到该数据库".mysql_error());

                     mysql_query("set names utf8");

              }

              public function execute_dml($sql){

                     $bool=mysql_query($sql);

                     if ($bool){

                            if ($bool>0) {

                                   return 1;

                            }else{

                                   return 2;

                            }

                     }else {

                            return 0;

                     }

              }

              public function execute_dql($sql){

                     $res=mysql_query($sql);

                     return $res;

              }

              public function close_conn(){

                     mysql_close($this->conn);

              }

       }

?>

<?php
ignore_user_abort();//关掉浏览器，PHP脚本也可以继续执行.
set_time_limit(3000);// 通过set_time_limit(0)可以让程序无限制的执行下去
$interval=5;// 每隔5s运行

//方法1--死循环
do{
 echo '测试'.time().'<br/>'; 
 sleep($interval);// 等待5s 
}while(true);

//方法2---sleep 定时执行
 require_once './curlClass.php';//引入文件
 
 $curl = new httpCurl();//实例化
 $stime = $curl->getmicrotime();
 for($i=0;$i<=10;$i++){
  
  echo '测试'.time().'<br/>'; 
  sleep($interval);// 等待5s
  
 }
 ob_flush();
 flush();
 $etime = $curl->getmicrotime();
 echo '<hr>';
 echo round(($etime-stime),4);//程序执行时间