PHP adds background example code to pictures

function overlayjpg($imgsrc,$imgdst,$width,$height="")
{
//$imgsrc jpg format image path $imgdst jpg format image save File name $imgwidth Width to change $imgheight Height to change
//Get the width and height value of the image
$arr = getimagesize($imgsrc);
//Calculate the X-axis position of the image
$img_X = ($width - $arr[0])/2;
if($height == ""){
 $heights = $arr[1];
 $img_Y = 0;
}
else{
 if($height <= $ arr[1]){
 $heights = $arr[1];
 $img_Y = 0;
 }
 else{
 $heights = $height;
 $img_Y = ($height - $arr[1])/2 ;
 }
}
//$w = $arr[0];
//$h = $arr[1];
// Create image and define colors
$image = imagecreatetruecolor($width,$heights); //Create a color basemap
$bg = imagecolorallocate($image, 255, 255, 255);
imagefill($image,0,0,$bg);
$imgsrc = LoadIMG($imgsrc,$arr['mime']);
imagecopy($image,$imgsrc,$img_X,$img_Y,0,0,$arr[0],$arr[1]);
imagejpeg( $image,$imgdst,90);
//imagedestroy($image);
}
// Load background image
function LoadIMG($imgname,$mime)
{
 if($mime == "image/gif" ){
 $im = @imagecreatefromgif($imgname); /* Attempt to open */
 }
 elseif ($mime == "image/png"){
 $im = @imagecreatefrompng($imgname); /* Attempt to open */
 }
 else{
 $im = @imagecreatefromjpeg($imgname); /* Attempt to open */
 }
 if(!$im) { /* See if it failed */
 $im = imagecreatetruecolor (150, 30); /* Create a blank image */
 $bgc = imagecolorallocate($im, 255, 255, 255);
 $tc = imagecolorallocate($im, 0, 0, 0);
 imagefilledrectangle($ im, 0, 0, 150, 30, $bgc);
 /* Output an errmsg */
 imagestring($im, 1, 5, 5, "Error loading $imgname", $tc);
 }
 return $ im;
}