Image Manipulator (Watermark and Thumb
Auteur: Sean - 20 maart 2005 - 19:08 - Gekeurd door: XenoX - Hits: 6701 - Aantal punten: 3.50 (4 stemmen)
Alle informatie staat in de comments, echter staat het wel in het engels zodat het script niet alleen door Nederlands-sprekenden gebruikt kan worden.
|
Code: |
<?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, $quality = 100) { /** * Basic checks * - Check if the maxwidth and maxheight are integers * - Check if the image exists to be thumbnailed * - Check if we need to overwrite or not, if necessary * - Check if we have gd enabled */ return false; return false; if (file_exists ($newPath) && ($overwrite == false || $overwrite == '')) return false; return false; /** * Store the information in an array for easy use */ $thumb['imgOldPath'] = $imgPath; $thumb['imgNewPath'] = $newPath; $thumb['imgMaxWidth'] = $imgMaxWidth; $thumb['imgMaxHeight'] = $imgMaxHeight; $thumb['imgQuality'] = $quality; list ($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'; $func2 = 'imagepng'; } else return false; /** * Check if we can manipulate this image */ if ($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 */ return trigger_error ('Could not add watermark to image ' . $_IMG['IMGName'] . ', image file does not exist'); 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['transparency'] = $transparency; $_IMG['image'] = $image; $_IMG['watermark'] = $watermark; $_IMG['wposition'] = $wposition; $_IMG['hposition'] = $hposition; /** * Make sure we use the correct things */ switch ($_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; } } ?>
Download code (.txt)
|
|
Stemmen |
Niet ingelogd. |
|