Can't read images in from directory using PHP

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Can't read images in from directory using PHP

rwilliams1961

I've spent a day and a half attempting to read images from a folder and then printing them to a webpage. I have used code provided at a few different reputable websites. They have not worked.

I've used glob, opendir, and scandir to read the folders.

What I am seeing:

The user drops through the loop once.
The variable used for the image does not print a value.

My belief is that the code is not in any of these instances seeing an image. That has led me to think that I am pointing to the wrong folder. This is a WordPress install located in a subdirectory: http://domainname/subdirectory/wordpressinstall/wp-content/uploads. The images are in the uploads folder.

The directory path I have used is $dir = /trophy/wp-content/uploads.

Any and all help is appreciated.

rwilliams1961

Anyone?

gvre

Could you post your code and the path of the script?

rwilliams1961

$current_dir = 'domainname/trophy/wp-content/uploads/';
echo $current_dir;
$dir = opendir($current_dir);

while ($file = readdir($dir))

{
$parts = explode(".", $file);

if (is_array($parts) && count($parts) > 1)

{
$extension = end($parts);

if ($extension == "ext")

{
echo 'hello';

}
}
closedir($dir);

rwilliams1961

This is another version:

$dir = '/trophy/wp-content/uploads';
$scan = scandir($dir); 
for ($i=0; $i<count($scan); $i++) 
	{
	echo '<img src="'.$dir.'/'.$scan[$i].'">';
	echo '<p>'.$scan[$i];	
	if (strpos($scan[$i], 'cat') !== false)
		{  
		echo '<div id="#catalog-directory-images">';
		echo '<img src="'.$page_url.$dir.$scan[$i].'" alt="'.$scan[$i].'" />';
		echo '</div>';
		}  
	}

gvre

function GetImages($dir, array $extensions, $prefix = "")
{
        $images = array();
        $it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS));
        while($it->valid())
        {
                if (($pos = strrpos($it->getSubPathName(), '.')) !== false &&
                     in_array(substr($it->getSubPathName(), $pos + 1), $extensions))
                {
                        if ($prefix)
                                $prefix = rtrim($prefix, '/') . '/';
                        $images[] = $prefix . $it->getSubPathName();
                }
                $it->next();
        }
        return $images;
}

$dir = dirname(__FILE__) . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$prefix = '/wp-content/uploads';
$images = GetImages($dir, $extensions, $prefix);

I assume that the script's path is the root dir of wordpress. If not, you should change $dir and $prefix.

rwilliams1961

So I plugged it in exactly as you sent it EXCEPT that I added the subdirectory that the WordPress install is in, so the directory and prefix paths are /trophy/wp-content/uploads.

The result is that when I publish the page, the HTML ends at on the line previous to your code. It's all white from just before "<?php"

Any ideas?

gvre

You don't need to change the $dir and $prefix if the script is inside the wordpress root dir. The $images contains an array with all images' paths. You should add a foreach construct to iterate over it.
e.g.

foreach($images as $img)
{
    echo '<img src="' . $img . '" /><br />';
}

rwilliams1961

Okay, I'll plug that in. Thank you.

Still, why did the HTML stop when it hit the code - not even my footer?

gvre

Did you wrap the code in <?php ?> tags?

rwilliams1961

Yes:

<?php

function GetImages($dir, array $extensions, $prefix = "")
{
$images = array();
$it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS));
while($it->valid())
{
if (($pos = strrpos($it->getSubPathName(), '.')) !== false &&
in_array(substr($it->getSubPathName(), $pos + 1), $extensions))
{
if ($prefix)
$prefix = rtrim($prefix, '/') . '/';
$images[] = $prefix . $it->getSubPathName();

            }
            $it->next();




    }
    return $images;

foreach($images as $img)
{
echo '<img src="' . $img . '" /><br />';
}

}

$dir = dirname(FILE) . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$prefix = '/wp-content/uploads';
$images = GetImages($dir, $extensions, $prefix);

gvre

RecursiveDirectoryIterator throws an UnexpectedValueException if the path cannot be found or is not a directory. I suppose that the dir was not found when you added /trophy. Try this

function GetImages($dir, array $extensions, $prefix = "")
{
        $images = array();
        $it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS));
        while($it->valid())
        {
                if (($pos = strrpos($it->getSubPathName(), '.')) !== false &&
                     in_array(substr($it->getSubPathName(), $pos + 1), $extensions))
                {
                        if ($prefix)
                                $prefix = rtrim($prefix, '/') . '/';
                        $images[] = $prefix . $it->getSubPathName();
                }
                $it->next();
        }
        return $images;
}

$dir = dirname(__FILE__) . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$prefix = '/wp-content/uploads';
try {
        $images = GetImages($dir, $extensions, $prefix);
        foreach($images as $img)
                echo '<img src="' . $img . '" /><br />';
} catch (UnexpectedValueException $e) {
        die($e->getMessage());
}

ps. You put foreach after the return statement, so it could not be executed.

rwilliams1961

I put this into my page, still only white where this code begins.

This is the code from the last line to print to the footer:

<!-- LARGE IMAGES AND LINKS -->

<?php

$dir = dirname(FILE) . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$prefix = '/wp-content/uploads';
try {
$images = GetImages($dir, $extensions, $prefix);
foreach($images as $img)
echo '<img src="' . $img . '" /><br />';
} catch (UnexpectedValueException $e) {
die($e->getMessage());
}
?>

</div>

</div>

<?php endwhile; ?>

<?php get_footer(''); ?>

gvre

You should check the log files for error messages.

Btw, I made some small changes to the code.

function GetImages($dir, array $extensions, $prefix = '')
{
        $images = array();
        $it = new RecursiveIteratorIterator
        (
                new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS | FilesystemIterator::UNIX_PATHS),
                RecursiveIteratorIterator::LEAVES_ONLY,
                RecursiveIteratorIterator::CATCH_GET_CHILD
        );
        while($it->valid())
        {
                if (($pos = strrpos($it->getSubPathName(), '.')) !== false &&
                     in_array(substr($it->getSubPathName(), $pos + 1), $extensions))
                {
                        if ($prefix)
                                $prefix = rtrim($prefix, '/') . '/';
                        $images[] = $prefix . $it->getSubPathName();
                }
                $it->next();
        }
        return $images;
}

$dir = dirname(__FILE__) . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$prefix = '/wp-content/uploads';
try {
        $images = GetImages($dir, $extensions, $prefix);
        foreach($images as $img)
                echo '<img src="' . $img . '" /><br />' . "\n";
} catch (UnexpectedValueException $e) {
        die($e->getMessage());
}

rwilliams1961

I'm running PHP 5.2, and iterator was introduced in 5.3. Won't work.

gvre

Try this (not very well-tested) code.

function GetImages($dir, $basedir = null, array $extensions, $recursive = true)
{
        $dir = rtrim($dir, '/') . '/';
        $images = array();

    if (is_dir($dir) && ($dh = @opendir($dir)))
    {
            while (($file = readdir($dh)) !== false)
            {
                    if ($file == '.' || $file == '..')
                            continue;

                    if ($recursive)
                    {
                            if (is_dir($dir . $file))
                            {
                                    $nf = GetImages($dir . $file, $basedir, $extensions, $recursive);
                                    if (count($nf))
                                            $images = array_merge($images, $nf);
                            }
                            else
                            {
                                    if (($pos = strrpos($file, '.')) !== false)
                                    {
                                            $ext = substr($file, $pos+1);
                                            if (in_array($ext, $extensions))
                                            {
                                                    if ($basedir !== null)
                                                            $images[] = str_replace($basedir, '', $dir . $file);
                                                    else
                                                            $images[] = $dir . $file;
                                            }
                                    }
                            }
                    }
                    else
                    {
                            if (($pos = strrpos($file, '.')) !== false)
                            {
                                    $ext = substr($file, $pos + 1);
                                    if (in_array($ext, $extensions))
                                    {
                                            if ($basedir !== null)
                                                    $images[] = str_replace($basedir, '', $dir . $file);
                                            else
                                                    $images[] = $dir . $file;
                                    }
                            }
                    }
            }
            closedir($dh);
    }
    return $images;
}

$basedir = dirname(__FILE__);
$dir = $basedir . '/wp-content/uploads';
$extensions = array('jpg', 'png', 'gif');
$images = GetImages($dir, $basedir, $extensions);
foreach($images as $img)
        echo '<img src="' . $img . '" /><br />';