Resizing an image upon upload?

[TeddyKiller]

I have a resize image script, and an upload script.

When the image gets uploaded, it should resize to a certain size.

I'm not sure how I'd combine the two scripts together.

 

Upload script

        if($_POST['upload']){
            if ((($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "IMAGE/JPEG")  || ($_FILES["file"]["type"] == "image/pjpeg") || ($_FILES["file"]["type"] == "IMAGE/PJPEG") ) && ($_FILES["file"]["size"] < 100000)) {
                if ($_FILES["file"]["error"] > 0) {
                    $error = "Return Code: " . $_FILES["file"]["error"] . "<br />";
                } else {
                       if (file_exists("profile/photos/".$_FILES["file"]["name"]."-" . time())) {
                        $error = $_FILES["file"]["name"] . " already exists. <br />";
                    } else {
                        move_uploaded_file($_FILES["file"]["tmp_name"], "profile/photos/".time()."-".$_FILES["file"]["name"]);
                         //echo "Stored in: "."profile/photos/".$_FILES["file"]["name"]."<br />";
                        $filename = "profile/photos/".time()."-".$_FILES["file"]["name"];
                        $query = mysql_query("UPDATE users SET avatar = '$filename' WHERE id = '".$_SESSION['uid']."'") or trigger_error("Query failed: ".mysql_error());
                      }
                   }
             } else {
                echo "Invalid file<br />";
            }
        }
echo "<form action=\"\" method=\"post\" enctype=\"multipart/form-data\">
        <label for=\"file\">Filename:</label>
        <input type=\"file\" name=\"file\" id=\"file\" />
        <br />
        <input type=\"submit\" name=\"upload\" value=\"Submit\" />
        </form><br /><br />";

 

Resize script

<?php 
$pic = //Not sure about this
    
if (!isset($max_width))
    $max_width = 90;
if (!isset($max_height))
    $max_height = 90;
          
list($width, $height) = getimagesize($pic);
    
$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;
    
if (($width <= $max_width) && ($height <= $max_height)){
    $tn_width = $width;
    $tn_height = $height;
} 
elseif (($x_ratio * $height) < $max_height){
    $tn_height = ceil($x_ratio * $height);
    $tn_width = $max_width;
} else {
    $tn_width = ceil($y_ratio * $width);
    $tn_height = $max_height;
}
    
$src = imagecreatefromjpeg($pic);
$dst = imagecreatetruecolor($tn_width, $tn_height);
imagecopyresampled($dst, $src, 0,0,0,0, $tn_width, $tn_height, $width,$height);
    
header('Content-type: image/jpeg');
imagejpeg($dst,NULL,100);
imagedestroy($src);
imagedestroy($dst);
?>

 

There is an idea of after the file is uploaded, to pass the file name onto the resize script. Then it'll have to overwrite. If this is an option, how would I get it to overwrite?

Thanks!

Any help? Thanks.

[Ruzzas]

You would do so much better if you could get a function script that has something like resizeImage(); not that full script because it will automatically execute which will cause a lot of hassle.

[TeddyKiller]

You mean a whole new script, or just turning that script into a function. I can turn it into a function.

I can use the variable "$filename" and use that in the function, and set the filename as the location to be saved.

Though would that overwrite it because it needs to overwrite.

[Ruzzas]

Just make a function script out of your resize one and i'd be happy to combine them both together for you.

[TeddyKiller]

<?php
function imageResize(){
$pic = //Not sure about this
    
if (!isset($max_width)) $max_width = 90;
if (!isset($max_height)) $max_height = 90;

list($width, $height) = getimagesize($pic);
    
$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;
    
if (($width <= $max_width) && ($height <= $max_height)){
	$tn_width = $width;
	$tn_height = $height;
} 
elseif (($x_ratio * $height) < $max_height){
	$tn_height = ceil($x_ratio * $height);
	$tn_width = $max_width;
} else {
	$tn_width = ceil($y_ratio * $width);
	$tn_height = $max_height;
}
    
$src = imagecreatefromjpeg($pic);
$dst = imagecreatetruecolor($tn_width, $tn_height);
imagecopyresampled($dst, $src, 0,0,0,0, $tn_width, $tn_height, $width,$height);
    
header('Content-type: image/jpeg');
imagejpeg($dst,NULL,100);
imagedestroy($src);
imagedestroy($dst);

return true;
}
?>

 

Best I can do. Not an expert on functions.

[Ruzzas]

Try this:

 

<?php
function imageResize($pic){
if (!isset($max_width)) $max_width = 90;
if (!isset($max_height)) $max_height = 90;

list($width, $height) = getimagesize($pic);
    
$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;
    
if (($width <= $max_width) && ($height <= $max_height)){
	$tn_width = $width;
	$tn_height = $height;
} 
elseif (($x_ratio * $height) < $max_height){
	$tn_height = ceil($x_ratio * $height);
	$tn_width = $max_width;
} else {
	$tn_width = ceil($y_ratio * $width);
	$tn_height = $max_height;
}
    
$src = imagecreatefromjpeg($pic);
$dst = imagecreatetruecolor($tn_width, $tn_height);
imagecopyresampled($dst, $src, 0,0,0,0, $tn_width, $tn_height, $width,$height);
imagejpeg($dst,NULL,100);
imagedestroy($src);
imagedestroy($dst);
return true;
}

        if($_POST['upload']){
            if ((($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "IMAGE/JPEG")  || ($_FILES["file"]["type"] == "image/pjpeg") || ($_FILES["file"]["type"] == "IMAGE/PJPEG") ) && ($_FILES["file"]["size"] < 100000)) {
                if ($_FILES["file"]["error"] > 0) {
                    $error = "Return Code: " . $_FILES["file"]["error"] . "<br />";
                } else {
                       if (file_exists("profile/photos/".$_FILES["file"]["name"]."-" . time())) {
                        $error = $_FILES["file"]["name"] . " already exists. <br />";
                    } else {
                        imageResize($_FILES["file"]);
                        move_uploaded_file($_FILES["file"]["tmp_name"], "profile/photos/".time()."-".$_FILES["file"]["name"]);
                         //echo "Stored in: "."profile/photos/".$_FILES["file"]["name"]."<br />";
                        $filename = "profile/photos/".time()."-".$_FILES["file"]["name"];
                        $query = mysql_query("UPDATE users SET avatar = '$filename' WHERE id = '".$_SESSION['uid']."'") or trigger_error("Query failed: ".mysql_error());
                      }
                   }
             } else {
                echo "Invalid file<br />";
            }
        }
echo "<form action=\"\" method=\"post\" enctype=\"multipart/form-data\">
        <label for=\"file\">Filename:</label>
        <input type=\"file\" name=\"file\" id=\"file\" />
        <br />
        <input type=\"submit\" name=\"upload\" value=\"Submit\" />
        </form><br /><br />";
        
?>

[Ruzzas]

Have a look at this:

 

This script doesn't actually Resize it but it makes the image height and width smaller, but when you actually go to the destination of the picture it will be bigger.

 

function imageResize($width, $height, $target){ 
if ($width > $height){ 
$percentage = ($target / $width); 
}else{ 
$percentage = ($target / $height); 
} 
$width = round($width * $percentage); 
$height = round($height * $percentage); 
return "width=\"$width\" height=\"$height\""; 
} 

[TeddyKiller]

I moved the function into a file called functions.php

 

Warning: getimagesize(Array) [function.getimagesize]: failed to open stream: No such file or directory in /home/jeanie/public_html/inc/functions.php on line 6

 

Warning: Division by zero in /home/jeanie/public_html/inc/functions.php on line 8

 

Warning: Division by zero in /home/jeanie/public_html/inc/functions.php on line 9

 

Warning: imagecreatefromjpeg(Array) [function.imagecreatefromjpeg]: failed to open stream: No such file or directory in /home/jeanie/public_html/inc/functions.php on line 23

 

Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in /home/jeanie/public_html/inc/functions.php on line 24

 

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /home/jeanie/public_html/inc/functions.php on line 25

 

Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/jeanie/public_html/inc/functions.php on line 26

 

Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/jeanie/public_html/inc/functions.php on line 27

 

Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/jeanie/public_html/inc/functions.php on line 28

 

 

It's basically not recieving the picture?

[Ruzzas]

I'll let someone else do it for you since im busy with someone elses website.