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Full Discussion: Opendir
Top Forums Programming Opendir Post 302740389 by console on Thursday 6th of December 2012 06:12:41 AM
Old 12-06-2012
Opendir

code:
#include<iostream>
#include <dirent.h>
using namespace std;
int main()
{

DIR*dir;
dir = opendir("/");
if (dir !=NULL)
{
struct dirent * abcd;
while ((abcd=readdir (dir))!=NULL)
{
cout << abcd -> d_name;
}
}}
output : this gives the output of Directory "/"

ques :
what if i wanted to let user make an input of Directory name of there choice and if the directory name is not there program should show the contents of current dir.
 

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code: #include<iostream> #include <dirent.h> using namespace std; int main() { DIR*dir; dir = opendir("/"); if (dir !=NULL) { struct dirent * abcd; while ((abcd=readdir (dir))!=NULL) { cout << abcd -> d_name; } }} output : this gives the output of Directory "/" ques : (1 Reply)
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OPENDIR(3)								 1								OPENDIR(3)

opendir - Open directory handle

SYNOPSIS
resource opendir (string $path, [resource $context]) DESCRIPTION
Opens up a directory handle to be used in subsequent closedir(3), readdir(3), and rewinddir(3) calls. PARAMETERS
o $path - The directory path that is to be opened o $context - For a description of the $context parameter, refer to the streams section of the manual. RETURN VALUES
Returns a directory handle resource on success, or FALSE on failure. If $path is not a valid directory or the directory can not be opened due to permission restrictions or filesystem errors, opendir(3) returns FALSE and generates a PHP error of level E_WARNING. You can suppress the error output of opendir(3) by prepending '@' to the front of the function name. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.0.0 | | | | | | | $path supports the ftp:// URL wrapper. | | | | | 4.3.0 | | | | | | | $path can also be any URL which supports direc- | | | tory listing, however only the file:// URL wrap- | | | per supports this in PHP 4 | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 opendir(3) example <?php $dir = "/etc/php5/"; // Open a known directory, and proceed to read its contents if (is_dir($dir)) { if ($dh = opendir($dir)) { while (($file = readdir($dh)) !== false) { echo "filename: $file : filetype: " . filetype($dir . $file) . " "; } closedir($dh); } } ?> The above example will output something similar to: filename: . : filetype: dir filename: .. : filetype: dir filename: apache : filetype: dir filename: cgi : filetype: dir filename: cli : filetype: dir SEE ALSO
is_dir(3), readdir(3), dir(3). PHP Documentation Group OPENDIR(3)
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