php create thumbnails of images on server - php

Question

Could someone help me find out why this function does not work form me.
The parameters given to the function are:
$pathToImages is a full path starting with $_SERVER['DOCUMENT_ROOT']
$pathToThumbs is an URL which actually is a subfolder called "thumbs" inside $pathToImages
function createThumbs($pathToImages, $pathToThumbs) {
$dir = opendir($pathToImages);
while (false !== ($fname = readdir($dir))) {
if (is_file($pathToImages . $fname)) {
$info = pathinfo($pathToImages . $fname);
if ( strtolower($info['extension']) == 'jpg' || strtolower($info['extension']) == 'jpeg' ) {
list($width, $height, $type) = getimagesize($pathToImages . $fname);
switch ($type) {
case 1: $img = imagecreatefromgif($pathToImages . $fname);
break;
case 2: $img = imagecreatefromjpeg($pathToImages . $fname);
break;
case 3: $img = imagecreatefrompng($pathToImages . $fname);
break;
case 6: $img = imagecreatefromwbmp($pathToImages . $fname);
break;
default: $img = imagecreatefromjpeg($pathToImages . $fname);
};
$maxWidth = 164;
$maxHeight = 164;
if ($width > $height) {
$new_width = $maxWidth;
$new_height = floor($height * ($maxWidth / $imgw));
} else {
$new_height = $maxHeight;
$new_width = floor($width * ($maxHeight / $height));
};
$tmp_img = imagecreatetruecolor($new_width, $new_height);
// imagecopyresized($tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagecopyresampled($tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($tmp_img, $pathToThumbs . $fname);
imagedestroy($tmp_img);
imagedestroy($img);
};
};
};
closedir($dir);
}

Answer 1

Function looks ok for me.
Perhaps the directory of the thumbs was not created by PHP User, so your script has no rights to write data in the directory.
Try to create the /thumbs directory by PHP with
mkdir($pathToThumbs);
and use
chmod($pathToThumbs,755);
for giving the correct rights.
Otherwise please offer an error message. ;)