HTML tag)
*
* @param string $src_image full path to source image (already existing)
* @param int $dst_width destination image width (in pixels)
* @param int $dst_height destination image height (in pixels)
* @return Array resized image dimensions (0 - width, 1 - height)
*/
function GetImageDimensions($src_image, $dst_width, $dst_height)
{
$image_info = $this->getImageInfo($src_image);
if (!$image_info) {
return false;
}
$orig_width = $image_info[0];
$orig_height = $image_info[1];
$too_large = is_numeric($dst_width) ? ($orig_width > $dst_width) : false;
$too_large = $too_large || (is_numeric($dst_height) ? ($orig_height > $dst_height) : false);
if ($too_large) {
$width_ratio = $dst_width ? $dst_width / $orig_width : 1;
$height_ratio = $dst_height ? $dst_height / $orig_height : 1;
$ratio = min($width_ratio, $height_ratio);
$width = ceil($orig_width * $ratio);
$height = ceil($orig_height * $ratio);
}
else {
$width = $orig_width;
$height = $orig_height;
}
return Array ($width, $height);
}
/**
* Returns image dimensions + checks if given file is existing image
*
* @param string $src_image full path to source image (already existing)
* @return mixed
*/
function getImageInfo($src_image)
{
if (!file_exists($src_image)) {
return false;
}
$image_info = @getimagesize($src_image);
if (!$image_info) {
trigger_error('Image '.$src_image.' missing or invalid', E_USER_WARNING);
return false;
}
return $image_info;
}
}
?>