Introduction to the use of unlink of mkdir of rmdir of and other methods in php
- 2020-05-27 04:34:19
- OfStack
The unlink() function deletes files, the mkdir() function creates directories, and the rmdir() function deletes directories
Oh, simple application! The system always upload pictures, documents and so on, background management is to delete records, and not delete the actual uploaded file. Now the server is very bloated, the original deletion of the specified file is not difficult, on the unlink function!
<html>
<head>
<title>unlink() Function usage instance </title>
</head>
<body>
<?
// use unlink Function deletes files
$filename="data.txt"; // Define variables
unlink($filename); // with unlink Function deletes files , Here, filename Should be relative address, that is, put the current page directory under data.txt Deleted. Return if successful TRUE , failure returns FALSE .
// It was just used on the server today unlink When the function, with the relative address on the error, can not find the file, then change to the absolute address, deleted! This machine is window , the server is lunix . Is temporarily window I'm going to use the relative address, lunix Use the absolute address below! We used to see, is it so, to help confirm again!
</body>
</html>
<html>
<head>
<title>mkdir() Function usage instance </title>
</head>
<body>
<?
// use mkdir Function create directory
$dirname="mydir"; // Define variables
mkdir($dirname,0700); // with mkdir To create a directory, the directory here is also relative to the directory that you create on this page 1 Called" mydir "Directory! Return if successful TRUE , failure returns FALSE .
// Today just Use on the server unlink When the function, with the relative address on the error, can not find the file, then change to the absolute address, deleted! This machine is window , the server is lunix . A tentative is window I'm going to use the relative address, lunix Use the absolute address below! We used to see, is it so, to help confirm again!
?>
</body>
</html>
<html>
<head>
<title>rmdir() Function usage instance </title>
</head>
<body>
<?
// use rmdir Function delete directory
$dirname="mydir"; // Define variables
rmdir($dirname); // with rmdir To delete the directory, the directory here is also relative to the directory of this page 1 Called" mydir "Directory deleted! Return if successful TRUE , failure returns FALSE .
// Today just Use on the server unlink When the function, with the relative address on the error, can not find the file, then change to the absolute address, deleted! This machine is window , the server is lunix . A tentative is window I'm going to use the relative address, lunix Use the absolute address below! We used to see, is it so, to help confirm again!
?>
</body>
</html>
Oh, simple application! The system always upload pictures, documents and so on, background management is to delete records, and not delete the actual uploaded file. Now the server is very bloated, the original deletion of the specified file is not difficult, on the unlink function!