Archief - PHP: Thumbnails

function make_square_jpg($url,$newurl,$maxsize,$qual) {
  list($width, $height) = getimagesize($url);
	if ($width>$height) {
		$centerx=$width/2-$height/2;
		$centery=0;
		$size=$height;
	} else {
		$centerx=0;
		$centery=$height/2-$width/2;
		$size=$width;
	}
	$img = imagecreatefromjpeg($url);
	$thumb = imagecreatetruecolor($maxsize,$maxsize);
	imagecopyresampled($thumb, $img, 0, 0, $centerx, $centery, $maxsize, $maxsize, $size, $size); 
	imagejpeg($thumb, $newurl,$qual); 
	imagedestroy($img); 
	imagedestroy($thumb);
}

function make_jpg($url,$newurl,$maxwidth,$maxheight,$qual) {
  list($width, $height) = getimagesize($url);
  $ratiow=$width/$maxwidth;
  $ratioh=$height/$maxheight;
  if ($ratiow > $ratioh) {
    $ratio=$ratiow;
  } else {
    $ratio=$ratioh;
  }
  $thumb_width=$width/$ratio;
  $thumb_height=$height/$ratio;
  if ($thumb_height>$height || $thumb_width>$width) {
    $thumb_height=$height;
    $thumb_width=$width;
  }
  $img = imagecreatefromjpeg($url);
  $thumb = imagecreatetruecolor($thumb_width,$thumb_height);
  imagecopyresampled($thumb, $img, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height); 
  imagejpeg($thumb, $newurl,$qual); 
  imagedestroy($img); 
  imagedestroy($thumb);
}

  $thumb_width= 160;
  $thumb_height= 120;
  $width = 160;
  $height=120;
  $newurl = "thumbs/".$pic;
  $img = imagecreatefromjpeg($pic);
  $thumb = imagecreatetruecolor($thumb_width,$thumb_height);
  imagecopyresampled($thumb, $img, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height); 
  imagejpeg($thumb, $newurl); 
  imagedestroy($img); 
  imagedestroy($thumb);