Image resize not working

[Maarten]

Code

<?php
$dir="uploads/";
$totalsize = 0;
if (is_dir($dir)) 
{
$fd = @opendir($dir);
	if($fd) 
	{
	 while (($part = @readdir($fd)) == true) 
	 {
		if ($part != "." && $part != "..") 
		{
			$file_array[]=$part;
		}
	 }
	}

for($i=0;$i<count($file_array);$i++) 
{
	$npart=$file_array[$i];

	if (is_file($dir.$npart)) 
	{ 
	$width = imagesx($dir.$npart);
	$height = imagesy($dir.$npart);
	$scale = min(100/$width, 100/$height);

	# If the image is larger than the max shrink it
	if ($scale < 1) {
		$width = floor($scale*$width);
		$height = floor($scale*$height);
	}
	?>
		<td><img src="<?php echo $dir.$npart;?>" height="<?php echo $height;?>" width="<?php echo $width;?>"/></td>  								
	<?php  
	}

}
}
?>

PHP Version 4.3.2

GD Support 	enabled
GD Version 	bundled (2.0.12 compatible)
FreeType Support 	enabled
FreeType Linkage 	with freetype
GIF Read Support 	enabled
JPG Support 	enabled
PNG Support 	enabled
WBMP Support 	enabled
XBM Support 	enabled

Errors

Warning: imagesx(): supplied argument is not a valid Image resource in /var/www/html/restaurant/maintenance/upload2.php on line 125

Warning: imagesy(): supplied argument is not a valid Image resource in /var/www/html/restaurant/maintenance/upload2.php on line 126

Warning: Division by zero in /var/www/html/restaurant/maintenance/upload2.php on line 127

Warning: Division by zero in /var/www/html/restaurant/maintenance/upload2.php on line 127

[dgrinberg]

Hi,

The reason is that a string filename is not a valid argument of imagesx or imagesy. This needs to be an 'image resource'.

Warning: imagesx(): supplied argument is not a valid Image resource in /var/www/html/restaurant/maintenance/upload2.php on line 125

Warning: imagesy(): supplied argument is not a valid Image resource in /var/www/html/restaurant/maintenance/upload2.php on line 126

I think that you are using the wrong functions.

I would use 'getimagesize'

See http://au3.php.net/manual/en/function.getimagesize.php
for an explanation of how to use it.

[Maarten]

That worked thx.

I completed my code but now I am puzzled about with something else.

The plan was to show pictures in rows of 5 and even though to me it looks like the codes should do that it only show 4 images in a row 🙁 I tried echoing all the variables to see where the numbers aren't correct but everything is as it should be.

$nrrows = ceil(count($file_array) /5);
      echo $nrrows."<br />";
      $nrminrows = floor(count($file_array) /5);
      echo $nrminrows."<br />";
      $rest = count($file_array) - ($nrminrows * 5);
      echo "rest".$rest."<br />";
      $start = 0;
      echo "start".$start."<br />";
      for($y=0;$y<$nrrows;$y++) 
      {?>
      	<tr><?php

  	$col = $start + 5;
  	echo "col".$col."<br />";
  	for($i=$start; $i<$col;$i++) 
  	{
    $npart=$file_array[$i];

    if (is_file($dir.$npart)) 
    { 
    $img = $dir.$npart;

    $size = getimagesize("$img");
    $height = $size[1];
    $width = $size[0];

    //$width = imageSX($img);
    //$height = imageSY($img);
    $scale = min(100/$width, 100/$height);

    	# If the image is larger than the max shrink it
    	if ($scale < 1) {
      $width = floor($scale*$width);
      $height = floor($scale*$height);
    	}
    ?>
    	<td align="center">
       <a href="<?php echo $img; ?>" target="_blank"><img src="<?php echo $img;?>" alt="<?php echo $npart; ?>" width="<?php echo $width;?>" height="<?php echo $height;?>" border="0"/></a><br />
       <input name="foto" type="radio" value="<?php echo $npart; ?>" /><br /><br />
    	</td>          
    <?php  
    }
  	}
  	$start = $start +5;
  	echo "start".$start."<br />";
  	$col = $col +5;
  	if ($col > count($file_array)) 
  	{
    $col = $rest;
  	}
  	echo "col".$col."<br />";
  	?>
  </tr><?php	
  }

[Maarten]

I added more images and it seems that only first show 4 images, rest of the rows show 5 images.

[Maarten]

Well, I indentified the problem. The array contains the name of a subfolder and that explains why on first row only 4 images are shown cause the 5th item is a folder.