jQuery Jcrop Plugin

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In this article, we will learn how to crop an image using PHP and jQuery Jcrop plugin.

Note: Please download the jQuery Jcrop plugin and include the required files in the head section of your HTML code.

<link href=”jquery.Jcrop.min.css” rel=”stylesheet” type=”text/css”/>
<script src=”jquery.min.js”></script>
<script src=”jquery.Jcrop.min.js”></script>

Example: The following HTML code demonstrates the Jcrop plugin by taking an image file and giving a “Crop Image” button to crop the image and show the output cropped image in another HTML “div”.

html

<!DOCTYPE html>
<html>
 
<head>
 
    <!-- All the required libraries to
        crop the image-->
    <link rel="stylesheet"
          href="jquery.Jcrop.min.css"
          type="text/css" />
    <script src="jquery.min.js"></script>
    <script src="jquery.Jcrop.min.js"></script>
 
    <style>
        body {
            width: 500px;
            height: 380px;
            font-family: Arial, Sans-serif;
        }
 
        .btnSubmitClass {
            background-color: #696969;
            padding: 5px 30px;
            border: #696969 1px solid;
            border-radius: 4px;
            color: #FFFFFF;
            margin-top: 10px;
        }
 
        input#cropBtnID {
            padding: 5px 25px 5px 25px;
            background: #D3D3D3;
            border: #98b398 1px solid;
            color: #FFF;
            visibility: hidden;
        }
 
        #outputImage {
            margin-top: 40px;
        }
    </style>
</head>
 
<body>
    <h2>
        How to crop image using
        jQuery and PHP
    </h2>
 
    <div>
        <img src="gfg2.jpg"
             id="cropImageID"
             class="img" /><br />
    </div>
    <div id="btn">
        <input type='button'
             id="cropBtnID"
             value='Crop Image'>
    </div>
    <div>
        <img src="#"
             id="outputImage"
             style="display:none;">
    </div>
    <script type="text/javascript">
        $(document).ready(function () {
            let size;
            $('#cropImageID').Jcrop({
 
                /* Some settings for
                basic configuration*/
                allowSelect: true,
                allowMove: true,
                allowResize: true,
                fixedSupport: true,
                aspectRatio: 1,
                onSelect: function (c) {
                    size = {
                        x: c.x, y: c.y,
                        w: c.w, h: c.h
                    };
 
                    $("#cropBtnID").css(
                        "visibility", "visible");
                }//end onSelect
            });//end Jcrop method
 
            $("#cropBtnID").click(function () {
                let img = $("#cropImageID").attr('src');
                $("#outputImage").show();
 
                $("#outputImage").attr('src',
                    'image-features.php?x = ' +
                    size.x + ' & y=' + size.y +
                    ' & w=' + size.w + '&h=' +
                    size.h + '&img=' + img);
            });
        });//end document ready fn
    </script>
</body>
 
</html>

PHP code: The following PHP code implements the “image-features.php” file that is used in the above HTML code for image and color creation. The PHP function used for creating a new image is imagecreatefromjpeg() method. A new true color image is created using PHP imagecreatetruecolor() method. Other PHP functions used are imagecopyresampled() and imagejpeg().

php

<?php
 
// Create a new image from a file
$newImage = imagecreatefromjpeg($_GET['img']);
 
// Create a new true color image
$newTruecolorImage = imagecreatetruecolor(
            $_GET['w'], $_GET['h']);
 
// Copy a portion from one image to another
imagecopyresampled($newTruecolorImage,
        $newImage, 0, 0, $_GET['x'], $_GET['y'],
        $_GET['w'], $_GET['h'], $_GET['w'],
        $_GET['h']);
     
header('Content-type: image/jpeg');
 
// Display image to browser as output
imagejpeg($newTruecolorImage);
     
exit;
?>