Upload_crop_images

<?php
/* http://ilkomunived.blogspot.com/2014/04/crop-imageuploadand-save.html
* http://ilkomunived.blogspot.com
*/
error_reporting (E_ALL ^ E_NOTICE);
session_start(); //Do not remove this
//only assign a new timestamp if the session variable is empty
if (!isset($_SESSION['random_key']) || strlen($_SESSION['random_key'])==0){
    $_SESSION['random_key'] = strtotime(date('Y-m-d H:i:s')); //assign the timestamp to the session variable
    $_SESSION['user_file_ext']= "";
}
#########################################################################################################
# CONSTANTS                                                                                             #
# You can alter the options below                                                                       #
#########################################################################################################
$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_prefix = "resize_";            // The prefix name to large image
$thumb_image_prefix = "thumbnail_";         // The prefix name to the thumb image
$large_image_name = $large_image_prefix.$_SESSION['random_key'];     // New name of the large image (append the timestamp to the filename)
$thumb_image_name = $thumb_image_prefix.$_SESSION['random_key'];     // New name of the thumbnail image (append the timestamp to the filename)
$max_file = "3";                            // Maximum file size in MB
$max_width = "500";                         // Max width allowed for the large image
$thumb_width = "100";                       // Width of thumbnail image
$thumb_height = "100";                      // Height of thumbnail image
// Only one of these image types should be allowed for upload
$allowed_image_types = array('image/pjpeg'=>"jpg",'image/jpeg'=>"jpg",'image/jpg'=>"jpg",'image/png'=>"png",'image/x-png'=>"png",'image/gif'=>"gif");
$allowed_image_ext = array_unique($allowed_image_types); // do not change this
$image_ext = "";    // initialise variable, do not change this.
foreach ($allowed_image_ext as $mime_type => $ext) {
    $image_ext.= strtoupper($ext)." ";
}


##########################################################################################################
# IMAGE FUNCTIONS                                                                                        #
# You do not need to alter these functions                                                               #
##########################################################################################################
function resizeImage($image,$width,$height,$scale) {
    list($imagewidth, $imageheight, $imageType) = getimagesize($image);
    $imageType = image_type_to_mime_type($imageType);
    $newImageWidth = ceil($width * $scale);
    $newImageHeight = ceil($height * $scale);
    $newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
    switch($imageType) {
        case "image/gif":
            $source=imagecreatefromgif($image);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            $source=imagecreatefromjpeg($image);
            break;
        case "image/png":
        case "image/x-png":
            $source=imagecreatefrompng($image);
            break;
    }
    imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height);

    switch($imageType) {
        case "image/gif":
            imagegif($newImage,$image);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            imagejpeg($newImage,$image,90);
            break;
        case "image/png":
        case "image/x-png":
            imagepng($newImage,$image);
            break;
    }

    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, $scale){
    list($imagewidth, $imageheight, $imageType) = getimagesize($image);
    $imageType = image_type_to_mime_type($imageType);

    $newImageWidth = ceil($width * $scale);
    $newImageHeight = ceil($height * $scale);
    $newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
    switch($imageType) {
        case "image/gif":
            $source=imagecreatefromgif($image);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            $source=imagecreatefromjpeg($image);
            break;
        case "image/png":
        case "image/x-png":
            $source=imagecreatefrompng($image);
            break;
    }
    imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
    switch($imageType) {
        case "image/gif":
            imagegif($newImage,$thumb_image_name);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            imagejpeg($newImage,$thumb_image_name,90);
            break;
        case "image/png":
        case "image/x-png":
            imagepng($newImage,$thumb_image_name);
            break;
    }
    chmod($thumb_image_name, 0777);
    return $thumb_image_name;
}
//You do not need to alter these functions
function getHeight($image) {
    $size = getimagesize($image);
    $height = $size[1];
    return $height;
}
//You do not need to alter these functions
function getWidth($image) {
    $size = getimagesize($image);
    $width = $size[0];
    return $width;
}

//Image Locations
$large_image_location = $upload_path.$large_image_name.$_SESSION['user_file_ext'];
$thumb_image_location = $upload_path.$thumb_image_name.$_SESSION['user_file_ext'];

//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 name already exist
if (file_exists($large_image_location)){
    if(file_exists($thumb_image_location)){
        $thumb_photo_exists = "<img src=\"".$upload_path.$thumb_image_name.$_SESSION['user_file_ext']."\" alt=\"Thumbnail Image\"/>";
    }else{
        $thumb_photo_exists = "";
    }
    $large_photo_exists = "<img src=\"".$upload_path.$large_image_name.$_SESSION['user_file_ext']."\" 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'];
    $userfile_type = $_FILES['image']['type'];
    $filename = basename($_FILES['image']['name']);
    $file_ext = strtolower(substr($filename, strrpos($filename, '.') + 1));

    //Only process if the file is a JPG, PNG or GIF and below the allowed limit
    if((!empty($_FILES["image"])) && ($_FILES['image']['error'] == 0)) {

        foreach ($allowed_image_types as $mime_type => $ext) {
            //loop through the specified image types and if they match the extension then break out
            //everything is ok so go and check file size
            if($file_ext==$ext && $userfile_type==$mime_type){
                $error = "";
                break;
            }else{
                $error = "Only <strong>".$image_ext."</strong> images accepted for upload<br />";
            }
        }
        //check if the file size is above the allowed limit
        if ($userfile_size > ($max_file*1048576)) {
            $error.= "Images must be under ".$max_file."MB in size";
        }

    }else{
        $error= "Select an image for upload";
    }
    //Everything is ok, so we can upload the image.
    if (strlen($error)==0){

        if (isset($_FILES['image']['name'])){
            //this file could now has an unknown file extension (we hope it's one of the ones set above!)
            $large_image_location = $large_image_location.".".$file_ext;
            $thumb_image_location = $thumb_image_location.".".$file_ext;

            //put the file ext in the session so we know what file to look for once its uploaded
            $_SESSION['user_file_ext']=".".$file_ext;

            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 ($_GET['a']=="delete" && strlen($_GET['t'])>0){
//get the file locations
    $large_image_location = $upload_path.$large_image_prefix.$_GET['t'];
    $thumb_image_location = $upload_path.$thumb_image_prefix.$_GET['t'];
    if (file_exists($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" />
    <meta name="generator" content="WebMotionUK" />
    <title>WebMotionUK - PHP &amp; Jquery image upload &amp; crop</title>
    <script type="text/javascript" src="js/jquery-pack.js"></script>
    <script type="text/javascript" src="js/jquery.imgareaselect.min.js"></script>
</head>
<body>
<!--
* Copyright (c) 2008 http://www.webmotionuk.com / http://www.webmotionuk.co.uk
* Date: 2008-11-21
* "PHP & Jquery image upload & crop"
* Ver 1.2
* 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.
*
-->
<ul>
    <li><a href="http://www.webmotionuk.co.uk/php-jquery-image-upload-and-crop/">Back to project page</a></li>
    <li><a href="http://www.webmotionuk.co.uk/jquery_upload_crop.zip">Download Files</a></li>
</ul>
<?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:<?php echo $thumb_height/$thumb_width;?>', onSelectChange: preview });
});

</script>
<?php }?>
<h1>Photo Upload and Crop</h1>
<?php
//Display error message if there are any
if(strlen($error)>0){
    echo "<ul><li><strong>Error!</strong></li><li>".$error."</li></ul>";
}
if(strlen($large_photo_exists)>0 && strlen($thumb_photo_exists)>0){
    echo $large_photo_exists."&nbsp;".$thumb_photo_exists;
    echo "<p><a href=\"".$_SERVER["PHP_SELF"]."?a=delete&t=".$_SESSION['random_key'].$_SESSION['user_file_ext']."\">Delete images</a></p>";
    echo "<p><a href=\"".$_SERVER["PHP_SELF"]."\">Upload another</a></p>";
    //Clear the time stamp session and user file extension
    $_SESSION['random_key']= "";
    $_SESSION['user_file_ext']= "";
}else{
        if(strlen($large_photo_exists)>0){?>
        <h2>Create Thumbnail</h2>
        <div align="center">
            <img src="<?php echo $upload_path.$large_image_name.$_SESSION['user_file_ext'];?>" style="float: left; margin-right: 10px;" id="thumbnail" alt="Create Thumbnail" />
            <div style="border:1px #e5e5e5 solid; float:left; position:relative; overflow:hidden; width:<?php echo $thumb_width;?>px; height:<?php echo $thumb_height;?>px;">
                <img src="<?php echo $upload_path.$large_image_name.$_SESSION['user_file_ext'];?>" style="position: relative;" alt="Thumbnail Preview" />
            </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 } ?>
<!-- Copyright (c) 2008 http://www.webmotionuk.com -->
</body>
</html>