Codice PHP:
<?php
/*
* Copyright (c) 2008 [url]http://www.webmotionuk.com[/url]
* "PHP & Jquery image upload & crop"
* Date: 2008-05-15
* Ver 1.0
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* [url]http://www.opensource.org/licenses/bsd-license.php[/url]
*/
//Constants
//You can alter these options
$upload_dir = "upload_pic"; // The directory for the images to be saved in
$upload_path = $upload_dir."/"; // The path to where the image will be saved
$large_image_name = "resized_pic.jpg"; // New name of the large image
$thumb_image_name = "thumbnail_pic.jpg"; // New name of the thumbnail image
$max_file = "1148576"; // Approx 1MB
$max_width = "500"; // Max width allowed for the large image
$thumb_width = "100"; // Width of thumbnail image
$thumb_height = "100"; // Height of thumbnail image
//Image functions
//You do not need to alter these functions
function resizeImage($image,$width,$height,$scale) {
$newImageWidth = ceil($width * $scale);
$newImageHeight = ceil($height * $scale);
$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
$source = imagecreatefromjpeg($image);
imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height);
imagejpeg($newImage,$image,90);
chmod($image, 0777);
return $image;
}
//You do not need to alter these functions
function resizeThumbnailImage($thumb_image_name, $image, $width, $height, $start_width, $start_height, $scale){
$newImageWidth = ceil($width * $scale);
$newImageHeight = ceil($height * $scale);
$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
$source = imagecreatefromjpeg($image);
imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
imagejpeg($newImage,$thumb_image_name,90);
chmod($thumb_image_name, 0777);
return $thumb_image_name;
}
//You do not need to alter these functions
function getHeight($image) {
$sizes = getimagesize($image);
$height = $sizes[1];
return $height;
}
//You do not need to alter these functions
function getWidth($image) {
$sizes = getimagesize($image);
$width = $sizes[0];
return $width;
}
//Image Locations
$large_image_location = $upload_path.$large_image_name;
$thumb_image_location = $upload_path.$thumb_image_name;
//Create the upload directory with the right permissions if it doesn't exist
if(!is_dir($upload_dir)){
mkdir($upload_dir, 0777);
chmod($upload_dir, 0777);
}
//Check to see if any images with the same names already exist
if (file_exists($large_image_location)){
if(file_exists($thumb_image_location)){
$thumb_photo_exists = "<img src=\"".$upload_path.$thumb_image_name."\" alt=\"Thumbnail Image\"/>";
}else{
$thumb_photo_exists = "";
}
$large_photo_exists = "<img src=\"".$upload_path.$large_image_name."\" alt=\"Large Image\"/>";
} else {
$large_photo_exists = "";
$thumb_photo_exists = "";
}
if (isset($_POST["upload"])) {
//Get the file information
$userfile_name = $_FILES['image']['name'];
$userfile_tmp = $_FILES['image']['tmp_name'];
$userfile_size = $_FILES['image']['size'];
$filename = basename($_FILES['image']['name']);
$file_ext = substr($filename, strrpos($filename, '.') + 1);
//Only process if the file is a JPG and below the allowed limit
if((!empty($_FILES["image"])) && ($_FILES['image']['error'] == 0)) {
if (($file_ext!="jpg") && ($userfile_size > $max_file)) {
$error= "ONLY jpeg images under 1MB are accepted for upload";
}
}else{
$error= "Select a jpeg image for upload";
}
//Everything is ok, so we can upload the image.
if (strlen($error)==0){
if (isset($_FILES['image']['name'])){
move_uploaded_file($userfile_tmp, $large_image_location);
chmod($large_image_location, 0777);
$width = getWidth($large_image_location);
$height = getHeight($large_image_location);
//Scale the image if it is greater than the width set above
if ($width > $max_width){
$scale = $max_width/$width;
$uploaded = resizeImage($large_image_location,$width,$height,$scale);
}else{
$scale = 1;
$uploaded = resizeImage($large_image_location,$width,$height,$scale);
}
//Delete the thumbnail file so the user can create a new one
if (file_exists($thumb_image_location)) {
unlink($thumb_image_location);
}
}
//Refresh the page to show the new uploaded image
header("location:".$_SERVER["PHP_SELF"]);
exit();
}
}
if (isset($_POST["upload_thumbnail"]) && strlen($large_photo_exists)>0) {
//Get the new coordinates to crop the image.
$x1 = $_POST["x1"];
$y1 = $_POST["y1"];
$x2 = $_POST["x2"];
$y2 = $_POST["y2"];
$w = $_POST["w"];
$h = $_POST["h"];
//Scale the image to the thumb_width set above
$scale = $thumb_width/$w;
$cropped = resizeThumbnailImage($thumb_image_location, $large_image_location,$w,$h,$x1,$y1,$scale);
//Reload the page again to view the thumbnail
header("location:".$_SERVER["PHP_SELF"]);
exit();
}
if ($_GET['a']=="delete"){
if (file_exists($large_image_location)) {
unlink($large_image_location);
}
if (file_exists($thumb_image_location)) {
unlink($thumb_image_location);
}
header("location:".$_SERVER["PHP_SELF"]);
exit();
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>WebMotionUK - PHP & Jquery image upload & crop</title>
<script type="text/javascript" src="js/jquery-pack.js"></script>
<script type="text/javascript" src="js/jquery.imgareaselect-0.3.min.js"></script>
</head>
<body>
<!--
* Copyright (c) 2008 [url]http://www.webmotionuk.com[/url] / [url]http://www.webmotionuk.co.uk[/url]
* Date: 2008-05-15
* Ver 1.0
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* [url]http://www.opensource.org/licenses/bsd-license.php[/url]
-->
<ul>
[*][url="http://www.webmotionuk.co.uk/php-jquery-image-upload-and-crop/"]Back to project page[/url]
[*][url="http://www.webmotionuk.co.uk/jquery_upload_crop.zip"]Download Files[/url][/list]
<?php
//Only display the javacript if an image has been uploaded
if(strlen($large_photo_exists)>0){
$current_large_image_width = getWidth($large_image_location);
$current_large_image_height = getHeight($large_image_location);?>
<script type="text/javascript">
function preview(img, selection) {
var scaleX = <?php echo $thumb_width;?> / selection.width;
var scaleY = <?php echo $thumb_height;?> / selection.height;
$('#thumbnail + div > img').css({
width: Math.round(scaleX * <?php echo $current_large_image_width;?>) + 'px',
height: Math.round(scaleY * <?php echo $current_large_image_height;?>) + 'px',
marginLeft: '-' + Math.round(scaleX * selection.x1) + 'px',
marginTop: '-' + Math.round(scaleY * selection.y1) + 'px'
});
$('#x1').val(selection.x1);
$('#y1').val(selection.y1);
$('#x2').val(selection.x2);
$('#y2').val(selection.y2);
$('#w').val(selection.width);
$('#h').val(selection.height);
}
$(document).ready(function () {
$('#save_thumb').click(function() {
var x1 = $('#x1').val();
var y1 = $('#y1').val();
var x2 = $('#x2').val();
var y2 = $('#y2').val();
var w = $('#w').val();
var h = $('#h').val();
if(x1=="" || y1=="" || x2=="" || y2=="" || w=="" || h==""){
alert("You must make a selection first");
return false;
}else{
return true;
}
});
});
$(window).load(function () {
$('#thumbnail').imgAreaSelect({ aspectRatio: '1:1', onSelectChange: preview });
});
</script>
<?php }?>
<h1>Photo Upload and Crop</h1>
<?php
//Display error message if there are any
if(strlen($error)>0){
echo "<ul>[*][b]Error![/b][*]".$error."[/list]";
}
if(strlen($large_photo_exists)>0 && strlen($thumb_photo_exists)>0){
echo "
[b]NOTE:[/b] If the thumbnail image looks the same as the previous one, just hit refresh a couple of times.</p>";
echo $large_photo_exists."".$thumb_photo_exists;
echo "
<a href=\"".$_SERVER["PHP_SELF"]."?a=delete\">Delete Images</a></p>";
}else{
if(strlen($large_photo_exists)>0){?>
<h2>Create Thumbnail</h2>
<div align="center">
[img]<?php echo $upload_path.$large_image_name;?>[/img]
<div style="float:left; position:relative; overflow:hidden; width:<?php echo $thumb_width;?>px; height:<?php echo $thumb_height;?>px;">
[img]<?php echo $upload_path.$large_image_name;?>[/img]
</div>
<br style="clear:both;"/>
<form name="thumbnail" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
<input type="hidden" name="x1" value="" id="x1" />
<input type="hidden" name="y1" value="" id="y1" />
<input type="hidden" name="x2" value="" id="x2" />
<input type="hidden" name="y2" value="" id="y2" />
<input type="hidden" name="w" value="" id="w" />
<input type="hidden" name="h" value="" id="h" />
<input type="submit" name="upload_thumbnail" value="Save Thumbnail" id="save_thumb" />
</form>
</div>
<hr />
<?php } ?>
<h2>Upload Photo</h2>
<form name="photo" enctype="multipart/form-data" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
Photo <input type="file" name="image" size="30" /> <input type="submit" name="upload" value="Upload" />
</form>
<?php } ?>
</body>
</html>
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