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How to implement file management and basic function operations in PHP

墨辰丷

May 24, 2018 pm 04:43 PM

phpFunctionBase

这篇文章通过实例代码给大家讲解了php文件管理与基础功能的实现，非常不错，具有参考借鉴价值，需要的朋友参考下

文件的基本操作

先来看一下PHP文件基础操作，请看强大注释

<body>
<?php
var_dump(filetype("./img/11.png"));
//判断返回得是文件还是目录，返回sile为文件，dir为目录（文件夹）
var_dump(is_dir("./img/11.png"));
//判断给的文件是不是一个目录，目录为ture,文件为false
var_dump(is_file("./img"));
//判断是否为文件，同上
var_dump(date("Y-m-d H:i:s",fileatime("./img/11.png")));
//上次访问时间
var_dump(date("Y-m-d H:i:s",filectime("./img/11.png")));
//创建时间
var_dump(date("Y-m-d H:i:s",filemtime("./img/11.png")));
//修改时间
var_dump(filesize("./img/11.png"));
//获取文件大小
var_dump(file_exists("/QQPCMgr/www/wenjian/img/22.png"));
//在php里面根/则是磁盘
echo $_SERVER[&#39;DOCUMENT_ROOT&#39;];
//获取到服务器根路径
echo basename("/QQPCMgr/www/wenjian/img/22.png");
//返回22.png带后缀的文件名
echo basename("/QQPCMgr/www/wenjian/img/22.png",".png");
//扔上后缀之后只显示文件名（获取文件名）
echo dirname("/QQPCMgr/www/wenjian/img/22.png");
//返回的是不包含文件名的路径（获取文件名以上的）
var_dump(pathinfo("/QQPCMgr/www/wenjian/img/22.png"));
//这个获取的很全面，都能获取到
echo realpath("./img/11.png");
//真实路径：可以把相对路径转换为绝对路径
var_dump(glob("./ce/*"));
//取到这个文件夹里所有的文件，加后缀为条件
 ?>
<!--<img  src="/static/imghwm/default1.png"  data-src="/wenjian/img/11.png"  class="lazy"   / alt="How to implement file management and basic function operations in PHP" >-->
<!--在网页里根/代表的是www目录-->
</body>

文件整体操作：

<?php
//touch("./11.txt");
//创建文件
//copy("11.txt","./ce/11.txt");
//复制文件
//unlink("./11.txt");
//删除文件
//echo file_get_contents("./ce/11.txt");本地
//echo file_get_contents("http://www.baidu.com");远程
//读取文件所有内容
//file_put_contents("./11.txt","Myshao");
//往文件里面存储内容
//readfile("./11.txt");
//读取并输出
//$arr = file("./shouye.php");
//var_dump($arr);
//读取文件内所有内容，并扔到数组显示
//$ff = fopen("./11.txt","a");
//打开文件资源，详情见注1；
//echo fgetc($ff);
//读取一个字符
//echo fgets($ff);
//读取一行字符
//echo fread($ff,2);
//规定读多长
//fwrite($ff,"shao");
//写入内容

注1：打开和读取文件

php使用fopen()函数的方式，语法结构如下

Resource fopen (string $filename,string $mode) Filename是目标文件名，打开本地文件也可以打开远程文件，打开远程文件需要采用http://...形式，假如目标文件在

ftp服务器上，则采用形式ftp://...。

参数mode是目标文件打开形式，参数$mode是可以接收的模式。

文件打开方式表：

目录资源的打开与关闭：但凡有开就有关，否则会影响到后面的删除等操作；

<?php
$fname = "./ce/gf";
$d = opendir($fname);
//打开文件资源
while ($url = readdir($d))
{
 echo $fname."/".$url."<br/>";
// 仅读取文件名,把路径拼上=完整路径
}
var_dump(glob("./*"));
closedir($d);
//关资源

以上就是一些基础的语句了，来做点练习：

例：返回一个文件夹下的所有文件数量；

如果想要计算出ajax目录下有多少的文件，可以用下面封装的方法shu()来遍历目录，可以计算出ce目录下其他的文件夹里面的文件的总和，

<?php
function shu($url)
{
 $sl = 0;
 $arr = glob($url);
 //循环遍历
 foreach($arr as $v)
 {
  //判断是不是一个文件
  if(is_file($v))
  {
   //如果是一个文件+1
   $sl++;
  }
  else
  {
   $sl +=shu($v."/*");
  }
 }
 return $sl;
}
echo shu("./ce/*");
//最后给方法一个路径进行查找
?>

看一下输出：

再来一个!

例：删除文件

<?php
$fname = "./ce/gf";
$d = opendir($fname);
//打开文件资源
while ($url = readdir($d))
{
 echo $fname."/".$url."<br/>";
// 仅读取文件名,把路径拼上=完整路径
}
var_dump(glob("./*"));
closedir($d);
//关资源
//删除文件夹（非空文件夹）
function shan($url)
{
// 清空文件夹
 $d = opendir($url);
// 打开
 while ($u = readdir($d))//$u现在是文件名
 {
//  排除...
  if($u!="." && $u!="..")
  {
   $fname = $url . "/" . $u;
   //完整带路径的文件名
   if (is_file($fname))//如果是一个文件
   {
    unlink($fname);
   } else //如果是一个文件夹
   {
    shan($fname);
   }
  }
 }
 closedir($d);
 //关闭
 rmdir($url);
}
shan("./122");
?>

这样122目录里面所有的东西，不管是文件夹还是文件都会被删除；

实现文件管理功能

1.先把查看文件的功能做出来，让他把所有的文件与文件夹啊显示出来；

<body>
<?php
//定义文件目录
$fname = "./ce";
//便利目录下的所有文件显示
$arr = glob($fname."/*");
foreach ($arr as $v)
{
 //从完整路径中取文件名
 $name = basename($v);
 echo "<p class=&#39;item&#39; url=&#39;{$v}&#39;>{$name}</p>";
}
?>
</body>

图：

接下来给文件夹特殊显示一下把：

输出之前需要判断，判断是不是一个文件夹：

//从完整路径中取文件名
 $name = basename($v);
 if(is_dir($v)){
  echo "<p class=&#39;item dir&#39; url=&#39;{$v}&#39;>{$name}</p>";
 }
 else {
  echo "<p class=&#39;item&#39; url=&#39;{$v}&#39;>{$name}</p>";
 }

如果是个文件夹，给他背景颜色改变一下就好啦

图：

2.给文件夹添加双击事件：

双击实现进入这个目录；

js代码：

<script>
 $(".dir").dblclick(function(){
  var url = $(this).attr("url");
  $.ajax({
   url:"chuli.php",
   data:{url:url},
   type:"POST",
   dataType:"TEXT",
   success:function(data)
   {
    window.location.href="wenwen.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

   }

  });
 })
</script>

处理页面：

<?php
session_start();
$url = $_POST["url"];
$_SESSION["fname"] = $url;

这样就可以实现双击进入此文件夹：

3.返回上一级，找到上一级目录，写个p

$pname = dirname($fname);
echo "<p id=&#39;shang&#39; url=&#39;{$pname}&#39;>返回上一级</p>";

图：

写双击事件：

<script>
 $("#shang").dblclick(function(){
  var url = $(this).attr("url");
  $.ajax({
   url:"chuli.php",
   data:{url:url},
   type:"POST",
   dataType:"TEXT",
   success:function(data)
   {
    window.location.href="wenwen.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;
   }
  });
 })
</script>

返回到文件目录后使其隐藏：

//上一级的目录
$pname = dirname($fname);
if(realpath($fname)=="F:\\QQPCMgr\\WWW\\wenjian")
{}
else {
 echo "<p id=&#39;shang&#39; url=&#39;{$pname}&#39;>返回上一级</p>";
}

这样的话当我返回到wenjian目录的时候，使其隐藏：

4.删除功能

在文件p里面加删除按钮：

 echo "<p class=&#39;item&#39; url=&#39;{$v}&#39;>{$name}
<input type=&#39;button&#39; value=&#39;删除&#39; url=&#39;{$v}&#39; class=&#39;sc&#39;/>
</p>";

来写按钮的点击事件：

js代码：

$(".sc").click(function(){
   //确认删除提示
   var av = confirm("确定要删除");
   if(av){
   var url = $(this).attr("url");
   $.ajax({
    url: "shan.php",
    data: {url: url},
    type: "POST",
    dataType: "TEXT",
    success: function (data) {
     window.location.href = "wenwen.php";
    }

   });
   }
  })

删除的处理页面：

<?php
$url = $_POST["url"];
unlink($url);

这样完成后，当我点击删除：

再点击确定，即可删除

总代码：

管理查看页面：




 
 无标题文档
 
 


{$name}";
 }
 else {
  echo "{$name}

";
 }
}
?>
<script>
 $(".dir").dblclick(function(){
  var url = $(this).attr("url");
  $.ajax({
   url:"chuli.php",
   data:{url:url},
   type:"POST",
   dataType:"TEXT",
   success:function(data)
   {
    window.location.href="wenwen.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;
   }
  });
 })
 $("#shang").dblclick(function(){
  var url = $(this).attr("url");
  $.ajax({
   url:"chuli.php",
   data:{url:url},
   type:"POST",
   dataType:"TEXT",
   success:function(data)
   {
    window.location.href="wenwen.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;
   }
  });
 })
  $(".sc").click(function(){
   //确认删除提示
   var av = confirm("确定要删除");
   if(av){
   var url = $(this).attr("url");
   $.ajax({
    url: "shan.php",
    data: {url: url},
    type: "POST",
    dataType: "TEXT",
    success: function (data) {
     window.location.href = "wenwen.php";
    }
   });
   }
  })
</script>

处理：

<?php
session_start();
$url = $_POST["url"];
$_SESSION["fname"] = $url;

删除：

<?php
$url = $_POST["url"];
unlink($url);

以上就是本文的全部内容，希望对大家的学习有所帮助。

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