Working with PHP on the file (above)

How do I make the folders and directories on my disk appear on my Web page? So take a look at how PHP is going to manipulate them.

PHP files, typically containing two pieces of content, files and directories

First, a sentence to see the code, and his role

Look at the results after running

File refers to the meaning of a document

Change the path again.

After running

Dir Here is a shorthand for the directory.

In fact, the type of file to determine the two, is the file or directory

The paths written here are the files and directories that are built in the current directory,

wenjiancaozuo.php is the file name of the current write code

Qq.txt 111.php These three are all in the same directory, if you want to write, you can have the name of a random

Keep looking.

The previous code said that Dir is a shorthand for the directory, after judging the type of file 111.php is the directory, then run this code, see what he will return the content it

and see what values the non-directory will return.

If you replace dir with file in the previous sentence, you can also mean that the file is not a file, that is, it returns true, and it returns false.

And then again. File properties

What is a file attribute? Let's take a look at the picture.

Like this, it's called file attributes.

Or a sentence to see the code

Still need a path to the file

It's qq.txt.

Look at the results after the run

The result is a timestamp.

Turn it into something you can read.

Using the Date method

Look at the results of the operation

And the time shown in the file is the same.

Look again.

And the last sentence is a letter, the result of the operation and the previous access time is the same

This one is a letter, and the result is the same as the above two times.

Look at the results of the operation

There is no content in the file, so the file size is 0

Next, enter the content, and then look at the results of the operation.

Then run the code just now, and the result is:

This file is there, run it and see what it will return.

Write a non-existent file path and see what value will be returned.

After running

Say the file path

Run for a minute

Shows the root path of the server

This is a file from the parent directory.

After running

The file name is displayed.

BaseName also has a usage that can write two parameters

Look at the results of the run

Look at the results of the operation

Minus the file name, two points left.

After running

Returned is an array of

Look at the results of the operation

Look at the results of the operation

Depending on the parameters within the parentheses, the returned results will be different.

Like what:

This is the suffix that is found in. txt.

The file that is found here is the suffix of the. php

You can use the above traversal method, the 111.php directory of files are traversed out

Look at the results of the operation

Look at the results of the run

Check to see if the results are 5 right.

3+2 the result is 5.

Look at the results of this run

All files in the current directory

If you want to get a file name with a path, you can write this

Look at the results of the run

There's one on the top. and. Here's a note.

. Represents the current directory: represent the parent directory

In general, take care to get rid of those two rows.

//get the size of all files in a directoryfunctionFsize ($fname){    $size= 0; $dir=Opendir($fname);  while($u=Readdir($dir))    {       if($u=="." ||$u=="..")       {       }           Else       {          $zfname=$fname." /".$u; if(Is_file($zfname))          {            $size+=filesize($zfname); }         }    }    //find subdirectories, get the file size under subdirectories    Rewinddir($dir);  while($u=Readdir($dir))    {        if($u=="." ||$u=="..")        {        }        Else        {            $zfname=$fname." /".$u; if(Is_dir($zfname))            {                $size+ = Fsize ($zfname); }        }    }        Closedir($dir); return $size;}EchoFsize ("./111.php");

This is the size of the fetch file.

To run it.

Verify

and find a file with the content.

Change the path to this and look at the results of the operation.

To verify

OK, tomorrow we will send you the file operation (below), you can use the code to complete the file additions and deletions

Working with PHP on the file (above)