Php readdir function usage example, readdir function instance _ PHP Tutorial-php Tutorial

Php readdir function usage instance, readdir function instance. Php readdir function usage example. readdir function example this article describes the usage of readdir function in php. Share it with you for your reference. The usage analysis is as follows: definition and usage: php readdir function usage instance, readdir function instance

This example describes the usage of the readdir function in php. Share it with you for your reference. The usage analysis is as follows:

Definition and usage: the readdir () function returns the entries in the directory handle opened by opendir (). if the operation succeeds, the function returns a file name; otherwise, false.

Example 1: The code is as follows:

The code is as follows:

$ Dir = "readdir /";

// Determine whether it is a directory
If (is_dir ($ dir )){
If ($ dh = opendir ($ dir )){
While ($ file = readdir ($ dh ))! = False ){
Echo "filename: $ file: filetype:". filetype ($ dir. $ file )."";
}
Closedir ($ dh );
}
}

Instance 2. Note that it does not exist before 4.0.0-RC2! = Operator, the code is as follows:

The code is as follows:

If ($ handle = opendir ('/path/to/Files ')){
Echo "Directory handle: $ handle ";
Echo "Files :";

/* This is the correct way to traverse directories */
While (false! ==( $ File = readdir ($ handle ))){
Echo "$ file ";
}

/* This is the method for mistakenly traversing directories */
While ($ file = readdir ($ handle )){
Echo "$ file ";
}
Closedir ($ handle );
}

Instance 3, readdir () will return. and .. if you do not want them, you only need to filter them out. example 2. list all files in the current directory and remove them. and .., the code is as follows:

The code is as follows:

If ($ handle = opendir ('.')){
While (false! ==( $ File = readdir ($ handle ))){
If ($ file! = "." & $ File! = ".."){
Echo "$ file ";
}
}
Closedir ($ handle );
}

Note: Readdir must be used with opendir.

I hope this article will help you with php programming.

The example in this article describes the usage of the readdir function in php. Share it with you for your reference. The usage analysis is as follows: definition and usage :...