Monday, 4 February 2013

Image Upload and Cropping with PHP.

Image Upload and Cropping with PHP and Jquery


Users
Contains user details username, password, email, profile_image and profile_image_small etc.
CREATE TABLE `users` (
`uid` int(11) AUTO_INCREMENT PRIMARY KEY,
`username` varchar(255) UNIQUE KEY,
`password` varchar(100),
`email` varchar(255) UNIQUE KEY,
`profile_image` varchar(200),
`profile_image_small` varchar(200),
)

index.php
Contains PHP code uploading image into uploads folder physical location and image path updating in users table set profile_image.
<?php
include('db.php');
session_start();
$session_id=$_SESSION['user'];//  Session ID
$path = "uploads/";
$valid_formats = array("jpg", "png", "gif", "bmp");
if(isset($_POST['submit']))
{
$name = $_FILES['photoimg']['name'];
$size = $_FILES['photoimg']['size'];
if(strlen($name))
{
list($txt, $ext) = explode(".", $name);
if(in_array($ext,$valid_formats) && $size<(250*1024))
{
$actual_image_name = time().substr($txt, 5).".".$ext;
$tmp = $_FILES['photoimg']['tmp_name'];
if(move_uploaded_file($tmp, $path.$actual_image_name))
{
mysql_query("UPDATE users SET profile_image='$actual_image_name' WHERE uid='$session_id'");
$image="<h1>Please drag on the image</h1><img src='uploads/".$actual_image_name."' id=\"photo\" ";
}
else
echo "failed";
}
else
echo "Invalid file formats..!"; 
}
else
echo "Please select image..!";
}
?>
//HTML Body
<?php echo $image; ?>
<div id="thumbs" ></div>
<div >
<form id="cropimage" method="post" enctype="multipart/form-data">
Upload your image <input type="file" name="photoimg" id="photoimg" />
<input type="hidden" name="image_name" id="image_name" value="<?php echo($actual_image_name)?>" />
<input type="submit" name="submit" value="Submit" /> 
</form>

Javascript
$(“img#photo”).imgAreaSelect() - here photo is the ID name of image block and calling imgAreaSelect function for cropping image.


<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/
1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="scripts/jquery.imgareaselect.pack.js"></script>
<script type="text/javascript">
function getSizes(im,obj)
{
var x_axis = obj.x1;
var x2_axis = obj.x2;
var y_axis = obj.y1;
var y2_axis = obj.y2;
var thumb_width = obj.width;
var thumb_height = obj.height;
if(thumb_width > 0)
{
if(confirm("Do you want to save image..!"))
{
$.ajax({
type:"GET",
url:"ajax_image.php?t=ajax&img="+$("#image_name").val()+"&w="+
thumb_width+"&h="+thumb_height+"&x1="+x_axis+"&y1="+y_axis,
cache:false,
success:function(rsponse)
{
$("#cropimage").hide();
$("#thumbs").html("");
$("#thumbs").html("<img src='uploads/"+rsponse+"' />");
}
});
}
}
else
alert("Please select portion..!");
}
$(document).ready(function () 
{
$('img#photo').imgAreaSelect({
aspectRatio: '1:1',
onSelectEnd: getSizes
});
});
</script>

ajax_image.php

Contains simple PHP code, resizing cropped image into 100 x 100 pixel and updating into users table profile_image_small. 
<?php
include('db.php');
session_start();
$session_id=$_SESSION['user']; // Or Session ID
$t_width = 100; // Maximum thumbnail width
$t_height = 100; // Maximum thumbnail height
$new_name = "small".$session_id.".jpg"; // Thumbnail image name
$path = "uploads/";
if(isset($_GET['t']) and $_GET['t'] == "ajax")
{
extract($_GET);
$ratio = ($t_width/$w); 
$nw = ceil($w * $ratio);
$nh = ceil($h * $ratio);
$nimg = imagecreatetruecolor($nw,$nh);
$im_src = imagecreatefromjpeg($path.$img);
imagecopyresampled($nimg,$im_src,0,0,$x1,$y1,$nw,$nh,$w,$h);
imagejpeg($nimg,$path.$new_name,90);
mysql_query("UPDATE users SET profile_image_small='$new_name' WHERE uid='$session_id'");
echo $new_name."?".time();
exit;
}
?>
db.php
PHP database configuration file:
<?php
$mysql_hostname = "Host name";
$mysql_user = "UserName";
$mysql_password = "Password";
$mysql_database = "Database Name";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Could not connect database");
mysql_select_db($mysql_database, $bd) or die("Could not select database");
?>

5 comments:

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