Image resizing

[TeddyKiller]

This is basically a thumbnail image.

How do I create it that.. whatever size image is being entered.. eg:

$image

how can I resize it to a suitable width and height. This may be making it smaller, or bigger though it wouldn't be much.

The sizes I'd like it to be is 1"x1" (1 inch)

I've seen image resizing scripts which.. basically you specify your image, and the images width and height.

I can't do that, because the images are other users unless it automatically identifies it.

 

Hope you can help.

[TeddyKiller]

Probably very easy, but not sure.

I have this..

<?php
$num_printed = 0;
$sql = mysql_query("SELECT Avatar FROM users WHERE Activated = '0' ORDER BY RAND() LIMIT 12");
if (mysql_num_rows($sql) > 0) {
  while ($item = mysql_fetch_array($sql)) {
  
      echo '<a href="#"><img src="'.$item['Avatar'].'" alt="user" border=0 /></a>';
      $num_printed += 1;
  }
}
while( $num_printed < 12 ) {
    echo '<img src="profile/photos/default/default.jpg" alt="default" border=0 />';
    $num_printed += 1;
}
?>

 

Though I'm wanting the images resized and and cropped.

Please can you help, this is frustrating >.<

[TeddyKiller]

Bump.

Any ideas? I can't find absolutely anything.

[TeddyKiller]

I have found this, made some slight changes to it. It uses the GD Graphics library which is installed along with the php library, though I'm looking to fix it in with the code I supplied above.

I do not wish to include an upload form. In the other code I have image tags, these display the image. I need to resize the image without distorting it, and it may involve cropping. I'm not sure this tool does that, though here is what I've got.

(Includes info.php which has phpinfo()

 

<?php
define ("MAX_SIZE","100");
define ("WIDTH","144");
define ("HEIGHT","144");

function make_thumb($img_name,$filename,$new_w,$new_h)
{
$ext=getExtension($img_name);

if(!strcmp("jpg",$ext) || !strcmp("jpeg",$ext))
$src_img=imagecreatefromjpeg($img_name);

if(!strcmp("png",$ext))
$src_img=imagecreatefrompng($img_name);

$old_x=imageSX($src_img);
$old_y=imageSY($src_img);

$ratio1=$old_x/$new_w;
$ratio2=$old_y/$new_h;
if($ratio1>$ratio2) {
$thumb_w=$new_w;
$thumb_h=$old_y/$ratio1;
}
else {
$thumb_h=$new_h;
$thumb_w=$old_x/$ratio2;
}

$dst_img=ImageCreateTrueColor($thumb_w,$thumb_h);

imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);

if(!strcmp("png",$ext))
imagepng($dst_img,$filename);
else
imagejpeg($dst_img,$filename);

imagedestroy($dst_img);
imagedestroy($src_img);
}

function getExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}

$errors=0;
if(isset($_POST['Submit']))
{
$image=$_FILES['image']['name'];
if ($image)
{
$filename = stripslashes($_FILES['image']['name']);
$extension = getExtension($filename);
$extension = strtolower($extension);

if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png"))
{
echo '<h1>Unknown extension!</h1>';
$errors=1;
}
else
{
$size=getimagesize($_FILES['image']['tmp_name']);
$sizekb=filesize($_FILES['image']['tmp_name']);

if ($sizekb > MAX_SIZE*1024)
{
echo '<h1>You have exceeded the size limit!</h1>';
$errors=1;
}

$image_name=time().'.'.$extension;
$newname="images/".$image_name;
$copied = copy($_FILES['image']['tmp_name'], $newname);
if (!$copied)
{
echo '<h1>Copy unsuccessfull!</h1>';
$errors=1;
}
else
{
$thumb_name='images/thumbs/thumb_'.$image_name;

$thumb=make_thumb($newname,$thumb_name,WIDTH,HEIGHT);
}} }}

if(isset($_POST['Submit']) && !$errors)
{
echo "<h1>Thumbnail created Successfully!</h1>";
echo '<img src="'.$thumb_name.'">';
}
?>

<form name="newad" method="post" enctype="multipart/form-data" action="">
<table>
<tr><td><input type="file" name="image" ></td></tr>
<tr><td><input name="Submit" type="submit" value="Upload image"></td></tr>
</table>
</form>

 

This uses alot of useless tools.

With the code I supploed before, gets the pictures and displays them. Though i'm wanting to display them resized to 144 x 144 (1 x 1 inch)