<?php
/**
* Image manipulation class. Create thumbnails or add watermarks to an image
* Created for easy usage
*
* @author Sean Koole
* @access public
*/
class Image
{
/**
* Create a thumbnail
*
* @param string $imgPath The path of the image
* @param string $newPath The path to where the image should be copied to
* @param bool $overwrite Do you wish to overwrite the file if it already exists
* @param int $imgMaxWidth The maximum width of the thumbnail
* @param int $imgMaxHeight The maximum height of the thumbnail
* @param int $quality The quality of the image (100 is max and best)
* @return bool
* @access public
*/
function CreateThumb ($imgPath, $newPath, $overwrite = false, $imgMaxWidth = 100, $imgMaxHeight = 100, $quality = 100)
{
/**
* Basic checks
* - Check if the maxwidth and maxheight are integers
* - Check if the image exists to be thumbnailed
* - Check if we need to overwrite or not, if necessary
* - Check if we have gd enabled
*/
if (!ctype_digit ($imgMaxWidth) || !ctype_digit ($imgMaxHeight))
return false;
if (!file_exists ($imgPath))
return false;
if (file_exists ($newPath) && ($overwrite == false || $overwrite == ''))
return false;
if (!extension_loaded ('gd'))
return false;
/**
* Store the information in an array for easy use
*/
$thumb = array ();
$thumb['imgOldPath'] = $imgPath;
$thumb['imgNewPath'] = $newPath;
$thumb['imgMaxWidth'] = $imgMaxWidth;
$thumb['imgMaxHeight'] = $imgMaxHeight;
$thumb['imgQuality'] = $quality;
$thumb['imgExtension'] = strtolower (end(explode ('.', $thumb['imgOldPath'])));
list ($thumb['imgWidth'], $thumb['imgHeight']) = getimagesize ($thumb['imgOldPath']);
/**
* Create the new height and width for the thumbnail image
*/
$ratio = ($thumb['imgWidth'] > $thumb['imgMaxWidth']) ? (real)($thumb['imgMaxWidth'] / $thumb['imgWidth']) : 1;
$width = ((int)($thumb['imgWidth'] * $ratio));
$height = ((int)($thumb['imgHeight'] * $ratio));
$ratio = ($height > $height) ? (real)($thumb['imgMaxHeight'] / $height) : 1;
$width = ((int)($width * $ratio));
$height = ((int)($height * $ratio));
/**
* Choose the functions to use
*/
if ($thumb['imgExtension'] == 'jpg' || $thumb['imgExtension'] == 'jpeg' || $thumb['imgExtension'] == 'jpe' || $thumb['imgExtension'] == 'jfif')
{
$thumb['imgExtension'] = 'jpg';
$func1 = 'imagecreatefromjpeg';
$func2 = 'imagejpeg';
}
else if ($thumb['imgExtension'] == 'gif')
{
$thumb['imgExtension'] = 'gif';
$func1 = 'imagecreatefromgif';
$func2 = 'imagegif';
}
else if ($thumb['imgExtension'] == 'png')
{
$thumb['imgExtension'] = 'png';
$func1 = 'imagecreatefrompng';
$func2 = 'imagepng';
}
else
return false;
/**
* Check if we can manipulate this image
*/
$check = defined ('IMG_' . strtoupper ($thumb['imgExtension'])) ? constant ('IMG_' . strtoupper ($thumb['imgExtension'])) : 0;
if ($check == 0)
return false;
/**
* Create the thumbnail and stuff
*/
$img_new = imagecreatetruecolor ($width, $height);
$img_old = $func1 ($thumb['imgOldPath']);
imagecopyresampled ($img_new, $img_old, 0, 0, 0, 0, $width, $height, $thumb['imgWidth'], $thumb['imgHeight']);
$func2 ($img_new, $thumb['imgNewPath'], $thumb['imgQuality']);
imagedestroy ($img_new);
imagedestroy ($img_old);
/**
* Return true
*/
return true;
}
/**
* Add a watermark to an image
*
* @param string $image The path of the image
* @param string $watermark The path of the watermark image
* @param bool $transparency The transparancy level of the image
* @param int $wposition The amount of pixels the watermark should be placed from the left of the image
* @param int $hposition The amount of pixels the watermark should be placed from the top of the image
* @return bool
* @access public
*/
function AddWatermark ($image, $watermark, $transparency = 16, $wposition = 0, $hposition = 0)
{
/**
* Check if the image and the watermark image exist
*/
if (!file_exists ($image))
return trigger_error ('Could not add watermark to image ' . $_IMG['IMGName'] . ', image file does not exist');
if (!file_exists ($watermark))
return trigger_error ('Could not add watermark to image ' . $_IMG['IMGName'] . ', watermark file does not exist');
/**
* Store the information in an array for easy use
*/
$_IMG = array ();
$_IMG['transparency'] = $transparency;
$_IMG['image'] = $image;
$_IMG['watermark'] = $watermark;
$_IMG['wposition'] = $wposition;
$_IMG['hposition'] = $hposition;
$_EXT = array ();
$_EXT['image'] = end (explode ('.', strtolower ($_IMG['image'])));
$_EXT['watermark'] = end (explode ('.', strtolower ($_IMG['watermark'])));
/**
* Make sure we use the correct things
*/
switch ($_EXT['image'])
{
case 'jpg':
$_IMG['iinfo'] = array ('image/jpeg', 'imagecreatefromjpeg', 'imagejpeg');
break;
case 'gif':
$_IMG['iinfo'] = array ('image/gif', 'imagecreatefromgif', 'imagegif');
break;
case 'png':
$_IMG['iinfo'] = array ('image/png', 'imagecreatefrompng', 'imagepng');
break;
default:
$_IMG['iinfo'] = array ('image/jpeg', 'imagecreatefromjpeg', 'imagejpeg');
break;
}
switch ($_EXT['watermark'])
{
case 'jpg':
$_IMG['winfo'] = array ('image/jpeg', 'imagecreatefromjpeg', 'imagejpeg');
break;
case 'gif':
$_IMG['winfo'] = array ('image/gif', 'imagecreatefromgif', 'imagegif');
break;
case 'png':
$_IMG['winfo'] = array ('image/png', 'imagecreatefrompng', 'imagepng');
break;
default:
$_IMG['winfo'] = array ('image/jpeg', 'imagecreatefromjpeg', 'imagejpeg');
break;
}
/**
* Create the images
*/
$_IMG['image_mark'] = $_IMG['winfo'][1] ($_IMG['watermark']);
$_IMG['image_image'] = $_IMG['iinfo'][1] ($_IMG['image']);
/**
* Set the correct widht/height etc...
*/
$_IMG['image_imagew'] = imagesx ($_IMG['image_image']);
$_IMG['image_imageh'] = imagesy ($_IMG['image_image']);
$_IMG['image_markw'] = imagesx ($_IMG['image_mark']);
$_IMG['image_markh'] = imagesy ($_IMG['image_mark']);
/**
* Make sure we use the correct position of the watermark
*/
if ($_IMG['hposition'] == 0)
$_IMG['hposition'] = ($_IMG['image_imageh'] - $_IMG['image_markh']);
if ($_IMG['wposition'] == 0)
$_IMG['wposition'] = 5;
/**
* Create the watermark
*/
imagecopymerge ($_IMG['image_image'], $_IMG['image_mark'], $_IMG['wposition'], $_IMG['hposition'], 0, 0, $_IMG['image_markw'], $_IMG['image_markh'], $_IMG['transparency']);
/**
* Set the correct content header
*/
header ('Content-Type: ' . $_IMG['iinfo'][0]);
/**
* Create the image
*/
$_IMG['iinfo'][2] ($_IMG['image_image'], '', 100);
/**
* Destroy the image
*/
imagedestroy ($_IMG['image_image']);
/**
* Return true
*/
return true;
}
}
?>
<?php
/**
* Image manipulation class. Create thumbnails or add watermarks to an image
* Created for easy usage
*
* @author Sean Koole
* @access public
*/
class Image
{
/**
* Create a thumbnail
*
* @param string $imgPath The path of the image
* @param string $newPath The path to where the image should be copied to
* @param bool $overwrite Do you wish to overwrite the file if it already exists
* @param int $imgMaxWidth The maximum width of the thumbnail
* @param int $imgMaxHeight The maximum height of the thumbnail
* @param int $quality The quality of the image (100 is max and best)
* @return bool
* @access public
*/
function CreateThumb ($imgPath,$newPath,$overwrite=false,$imgMaxWidth=100,$imgMaxHeight=100,$quality=100)
{
/**
* Basic checks
* - Check if the maxwidth and maxheight are integers
* - Check if the image exists to be thumbnailed
* - Check if we need to overwrite or not, if necessary
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