I am currently facing an issue with a function that creates 4 resized images. The problem is that images with transparent backgrounds are being recreated with a black background. Does anyone know how I can fix this? I would prefer the background to remain transparent, but I'd also be happy if it was white. Thank you for your assistance.
error_reporting(0);
$change="";
$abc="";
define ("MAX_SIZE","5000");
function getExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}
$errors=0;
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$image =$_FILES["file"]["name"];
$uploadedfile = $_FILES['file']['tmp_name'];
if ($image)
{
$filename = stripslashes($_FILES['file']['name']);
$extension = getExtension($filename);
$extension = strtolower($extension);
if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif"))
{
$change='<div class="msgdiv">Unknown Image extension </div> ';
$errors=1;
}
else
{
$size=filesize($_FILES['file']['tmp_name']);
if ($size > MAX_SIZE*1024)
{
$change='<div class="msgdiv">You have exceeded the size limit!</div> ';
$errors=1;
}
if($extension=="jpg" || $extension=="jpeg" )
{
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefromjpeg($uploadedfile);
}
else if($extension=="png")
{
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefrompng($uploadedfile);
}
else
{
$src = imagecreatefromgif($uploadedfile);
}
echo $scr;
list($width,$height)=getimagesize($uploadedfile);
$newwidth=60;
$newheight=60;
$newheight=($height/$width)*$newwidth;
$tmp=imagecreatetruecolor($newwidth,$newheight);
$newwidth1=128;
$newheight1=($height/$width)*$newwidth1;
$tmp1=imagecreatetruecolor($newwidth1,$newheight1);
newmosaic2resampled($tmp2,$src,0,0,0,0,$newwidth2,$newheight2,$width,$height);
newmosaic3resampled($tmp3,$src,0,0,0,0,$newwidth3,$newheight3,$width,$height);
$bg = imagecolorallocate($tmp, 255, 255, 255); // white background color
imagefill($tmp, 0, 0, $bg);
imagecopyresampled($tmp,$src,255,255,255,$newwidth,$newheight,$width,$height);
imagecopyresampled($tmp1,$src,0,0,0,0,$newwidth1,$newheight1,$width,$height);
imagecopyresampled($tmp2,$src,0,0,0,0,$newwidth2,$newheight2,$width,$height);
imagecopyresampled($tmp3,$src,0,0,0,0,$newwidth3,$newheight3,$width,$height);
$filename = "images/". $_FILES['file']['name'];
$filename1 = "images/small/". $_FILES['file']['name'];
$filename2 = "images/100/". $_FILES['file']['name'];
$filename3 = "images/80/". $_FILES['file']['name'];
imagejpeg($tmp,$filename,100);
imagejpeg($tmp1,$filename1,100);
imagejpeg($tmp2,$filename2,100);
imagejpeg($tmp3,$filename3,100);
imagedestroy($src);
imagedestroy($tmp);
imagedestroy($tmp1);
imagedestroy($tmp2);
imagedestroy($tmp3);
}}
}
//If no errors registred, print the success message
if(isset($_POST['Submit']) && !$errors)
{
// mysql_query("update {$prefix}users set img='$big',img_small='$small' where user_id='$user'");
$change=' <div class="msgdiv">Image Uploaded Successfully!</div>';
}