[SOLVED] Image Retreival

[think-digitally]

Hi. I am trying to retrieve an image from a folder on the server, each time the page is refreshed a random image from the folder appears.

 

Here is what I have got so far, and well its not working, and I am swimming far out at sea...

 

Would be greatful to anyone that could give some help.

 

  <?php
$dir = "/frontpage/";

if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) !== false) {
	echo "<img src=".$file." />" . filetype($dir . $file) . "\n";
        }
        closedir($dh);
    }
}
?>

[Orio]

You want to display a random image from that folder?

 

<?php

$dir = "/frontpage/";

$files = scandir($dir); //Note, PHP5+
$rand = rand() % (count($files) - 2) + 2;
echo "<img src=".$files[$rand]." />" . filetype($dir . $file[$rand]) . "\n";

?>

 

Orio.

[think-digitally]

Thankyou, but unfortunately I am on 4.3 Is there anyway I can do it without PHP5?

[think-digitally]

anyone have any ideas?

[Orio]

Try this:

 

<?php

function random_file ($dirname)
{
if(!is_dir($dirname))
	return false;
if(!$h = opendir($dirname))
	return false;

$files = array();
while($file = readdir($h) !== FALSE)
	if(!is_dir($file))
		$files[] = $file;

return $files[array_rand($files)];
}


$dir = "/frontpage/";
$img = random_file($dir);
if($img !== false)
echo "<img src=".$img." />" . filetype($dir.$img) . "\n";

?>

 

 

Orio.

[think-digitally]

Thanks again, although this time all it displays is 'dir' on screen.

 

Any ideas?

 

[corbin]

You could just emulate the scandir function in his code from earlier...

 

$dir = "/frontpage/";

if(!function_exists('scandir')) {
   function scandir($dir) {
       $d = opendir($dir);
       $r = array();
       while(false !== ($f = readdir($d))) {
           $r[] = $f;
       }
       return $r;
   }
}

$files = scandir($dir);
$rand = rand() % (count($files) - 2) + 2;
echo "<img src=".$files[$rand]." />" . filetype($dir . $file[$rand]) . "\n";

[think-digitally]

I tried this one, sorry to say it doesnt work, the entire page goes blanks

[corbin]

Ahhh I had a typing error....  My bad.... I'll edit my other post to be correct.

[corbin]

Well crap.... Editing the old post is breaking the HTML.... I guess I'll repost it... Sorry for the multiple posting x.x.

 

<?php

$dir = "/frontpage/";

if(!function_exists('scandir')) {
    function scandir($dir) {
        $d = opendir($dir);
        $r = array();
        while(false !== ($f = readdir($d))) {
            $r[] = $f;
        }
        return $r;
    }
}

$files = scandir($dir);
$rand = rand() % (count($files) - 2) + 2;
echo "<img src=".$files[$rand]." />" . filetype($dir . $file[$rand]) . "\n";

?>

[think-digitally]

No problem, thanks for helping

 

I am afraid there are errors

 

Warning: opendir(/2/): failed to open dir: No such file or directory in /home/content/a/1/6/a16538296/html/index1.php on line 12

 

Warning: readdir(): supplied argument is not a valid Directory resource in /home/content/a/1/6/a16538296/html/index1.php on line 14

 

Warning: filetype(): Lstat failed for (null) (errno=2 - No such file or directory) in /home/content/a/1/6/a16538296/html/index1.php on line 23

 

I have checked the name of the folder, and its defo correct, so not sure

[corbin]

If it were correct, you wouldn't be getting errors ;p....

 

Well, you might still.... Does PHP have read access to the target directory?

 

Also, /2/ means the directory 2 from the root of the drive....  Do you mean the root of the drive, or do you want PHP to access a directory a level below the php file?  If so, it needs to be 2/, not /2/.

 

 

[think-digitally]

ha ha I guess so

 

Well I changed to 2/ and the errors have gone... but it now just displays 'dir'

 

Any ideas?

[corbin]

Uhhh, sec lemme test it on my comp.

[think-digitally]

okay, thank you

 

[corbin]

Found the error....

 

echo "<img src=".$files[$rand]." />" . filetype($dir . $file[$rand]) . "\n";

 

Should be

 

echo "<img src=".$files[$rand]." />" . filetype($dir . $files[$rand]) . "\n";

[think-digitally]

great, although it now says 'file; instead of 'dir'?

[corbin]

That's because of the filetype() call.... I'm not quite sure why Orio put that there...

 

If you don't want it there, just remove the filetype() call.

[think-digitally]

okay sorry to be a pain..

 

I remove it and it show nothing at all :S

 

heres what I changed...

 

echo "<img src=".$files[$rand]." />" . "\n";

 

I want it to display the images from the folder randomly each time the page is refreshed

[think-digitally]

Anyone have any ideas? So close...

[Stephen]

Couldn't you do like:

<?php
$top=10; //How many images you have... or anything I guess.
$dir="/dir/";
$od=opendir($dir);
$rand=rand(1,$top);
$done=false;

while (!$done) {
  while ($file=readdir($od)) {
    $nr=rand(1,$top);
    if ($nr==$rand) {
      $done=true;
      header("Content-type image/".filetype($dir."".$file));
      readfile($dir."".$file);
    }
  }
}

closedir($od);
?>

 

Not tested . I hope it works, I'm kind of tired right now though.

[think-digitally]

Hmm, thankyou, but it doesnt seem to work, it shows an internal server error

[Stephen]

Odd, I'll have to try it.

[think-digitally]

Okay, thanks

[Stephen]

Well

<?php
$top=6; //How many images you have... or anything I guess.
$dir="/dir/";
$od=opendir($dir);
$rand=rand(1,$top);
$ndone=true;

while ($ndone) {
  while ($file=readdir($od)) {
    $nr=rand(1,$top);
    if ($nr==$rand) {
      readfile($dir."".$file);
      $ndone=false;
    }
  }
}

closedir($od);
?>

 

Grabs a random file and reads the contents. Problem is, I can't get the header to work (above readfile) so it can display as an image :/.