array help

darknuke

i need help:

i have a directory of images and i am trying to make it so my script will scan the directory and randomly select one... i have the links hardcoded into my script now, but it is a pain to change them..

http://www.darknuke.com/randava.php -- click it a few times and youll see different images

Psyche

You might want to use array_rand().

majik-sheff

Check out the manual section on directory functions. This is a modified example from the manual:

give get_image_list a directory and it will return an array containing the names of all of the images in that directory in an array.


function get_image_list($directory) {
		$files = array();
		if ($handle = opendir($directory)) {
		    while (false !== ($file = readdir($handle))) {
		    	$extension = strtolower(strrchr($file, "."));
		        if ($file != "." && $file != ".." && ($extension == ".png" || $extension == ".jpg" || $extension == ".gif")) {
		           $files[] = $file;
		        } 
		    }
		    closedir($handle); 
		}
		return($files);
	}

darknuke

if ($handle = opendir('.')) {
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
$id = $id+1;
$show = array($id => $file);

    } 
}
closedir($handle);

}

print "$show[0] - $show[1] - $show[2]";

no files display when i use it... whats wrong

darknuke

BUUUUMP

shawon22

b4 u try to open the directory u need to use chdir() function. try this and see if it works

$dir = "/path";
chdir($dir); 
if ($handle = opendir($dir)) { 
while (false !== ($file = readdir($handle))) { 
if ($file != "." && $file != "..") { 
$id = $id+1; 
$show = array($id => $file); 


} 
} 
closedir($handle); 
} 

print "$show[0] - $show[1] - $show[2]";

darknuke

for starters, it brings errors.... and no it doesnt work, and the using the $dir variable in the opendir function makes the path look like

images/avatars/images/avatars

Weedpacket

Originally posted by darknuke
if ($handle = opendir('.')) {
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
$id = $id+1;
$show = array($id => $file);
    } 
}
closedir($handle); 
}

print "$show[0] - $show[1] - $show[2]";

no files display when i use it... whats wrong [/B]

$show will contain only one element: the last. All the others got overwritten in the "$show = " line. If there are more than three interesting files in the directory, then there won't be a $show[0], $show[1] or $show[2].

Two characters are missing:

$show[$id] = $file;

And who bumps after less than twenty minutes?! It's almost enough to make me refuse to answer.

darknuke

still doesnt work!! 🙁

darknuke

sorry... cuz usually posts that i make arent answered when theyre not on top

majik-sheff

Did I miss the question or was no one paying attention? I did test that function before I released it into the wild.

milind24

Try this :

    //give actual path to this variable ( IMP is that give proper path)
	$mydir = "../images";

$handle = opendir($mydir);
while ($file = readdir($handle)) 
{
    if (ereg(".png|.gif|.jpg",$file))
    {
        if(!($file == "." || $file == "..") )
        {
            $filelist[] = $file;
        }
    }
}

if(is_array($filelist))
{
	$rand_keys = array_rand ($filelist, 1);
	print "Random : ".  $filelist[$rand_keys];
}
else
{
	print " Image file not found in this directory";
}

intenz

<?
$handle = opendir( '.' );
while( false !== ( $file = readdir( $handle ) ) )
{
	if( $file != '.' && $file != '..' && ereg( '\.jpg$|\.gif$|\.png$', $file ) )
	{
		$pics[] = $file;
	}
}
closedir( $handle );

srand ((double) microtime() * 1000000);
$count = count( $pics )-1;
$rand = mt_rand( 0, $count );
echo $pics[$rand]  . ' (' . $rand . ') - ';
$rand = mt_rand( 0, $count );
echo $pics[$rand]  . ' (' . $rand . ') - ';
$rand = mt_rand( 0, $count );
echo $pics[$rand] . ' (' . $rand . ')';
?>