Erasing the contents of a file automatically

[Lchris006]

Erasing the contents of a file automatically,

is there anyway i can erase the contents of a file in a folder but leave the name standing, eg erase all the jpg information but be left with the filename, the script would have to be automatic ie go through an entire directory deleting just the inside of a file, does anyone know of a script, mime function etc etc that will do this?

[barand]

You can read through a directory with [man]readdir[/man]

When you come across a file you want to empty

open it for write access [man]fopen[/man]
write an empty string to it [man]fputs[/man]
close it [man]fclose[/man]

hth

[Lchris006]

i wrote this but i dont know how to make it do the whole directory automatically

do you?

$empty = "file.txt";

fopen("$empty"); 
print " \"\" ";
fclose("$empty");

[barand]

Yes.

Click here

Click on the other links in my last reply and read what the manual has to say. From the look of your code you haven't done that yet.

[Lchris006]

to be honest im not sure how to do it

[barand]

Set $directory to the path of the directory you want to clear and this will clear 'jpg' files

$directory = "C:/directory/to/process/";
$handle=opendir($directory);
while ($file = readdir($handle)) {
	if ($file != "." && $file != "..") { 
		echo "$file<br>";
		list($name,$ext) = explode('.',$file); 		// get file extension
		if ($ext=='jpg') {							// is it jpg image
			$fp = fopen("$directory$file", "w");	// open file for write
			fputs($fp,'');							// write empty string
			fclose($fp);							// close file
			echo "Cleared $directory/$file<br>";
		}
    } 
}
closedir($handle);

Read and learn.

[Lchris006]

thanks a lot, i also made it so it chmodds the file to 777 befor eit wipes it otherwise there is an error

<?php

$directory = "/home/chris0/public_html/gal/Christmas/";
$handle=opendir($directory);
while ($file = readdir($handle)) {
    if ($file != "." && $file != "..") { 
        echo "$file<br>";
        list($name,$ext) = explode('.',$file);         // get file extension
        if ($ext=='jpg') {                            // is it jpg image
            chmod ("$file", 0777);
            $fp = fopen("$directory$file", "w+");    // open file for write
            fputs($fp,'wowimbored.com');                            // write empty string
            fclose($fp);                            // close file
            echo "Cleared $file<br>";
        }
    } 
}
closedir($handle);

php?>