Kustom Ukuran Gambar Thumbnail

Secara default ukuran gambar thumbnail adalah 122 x 91px, namun sudah beberapa kali saya dapati pengguna menanyakan tentang bagaimana dan dimana letak file untuk merubah ukuran gambar thumbnail, dan oleh karena itu maka saya akan berikan tutorial ini.
Sebelum melangkah lebih jauh, saya sarankan agar anda terlebih dahulu mencoba pada web localhost untuk menghindari kesalahan atau error fatal.

Silahkan buka root_dir/po-includes/js/filemanager/upload.php

Gulir kebawah dan temukan baris ke 93, ok.... sudah tahu kan? Sebelumnya saya sudah yakin bahwa pembaca blog multibisnisindo ini memang orang-orang yang cerdas. Jadi baru saya kasih tahu barisnya langsung mengerti jawabanya.

send();
	exit;
}

if (isset($_POST['path']))
{
   $storeFolder = $_POST['path'];
   $storeFolderThumb = $_POST['path_thumb'];
}
else
{
   $storeFolder = $current_path.$_POST["fldr"]; // correct for when IE is in Compatibility mode
   $storeFolderThumb = $thumbs_base_path.$_POST["fldr"];
}

$path_pos  = strpos($storeFolder,$current_path);
$thumb_pos = strpos($storeFolderThumb,$thumbs_base_path);

if ($path_pos!==0
	|| $thumb_pos !==0
	|| strpos($storeFolderThumb,'../',strlen($thumbs_base_path)) !== FALSE
	|| strpos($storeFolderThumb,'./',strlen($thumbs_base_path)) !== FALSE
	|| strpos($storeFolder,'../',strlen($current_path)) !== FALSE
	|| strpos($storeFolder,'./',strlen($current_path)) !== FALSE )
		die('wrong path');


$path = $storeFolder;
$cycle = TRUE;
$max_cycles = 50;
$i = 0;
while ($cycle && $i < $max_cycles)
{
	$i++;
	if ($path == $current_path) $cycle = FALSE;
	if (file_exists($path."config.php"))
	{
		require_once $path."config.php";
		$cycle = FALSE;
	}
	$path = fix_dirname($path).'/';
}


if ( ! empty($_FILES))
{
	$info = pathinfo($_FILES['file']['name']);

	if (in_array(fix_strtolower($info['extension']), $ext))
	{
		$tempFile = $_FILES['file']['tmp_name'];
		$targetPath = $storeFolder;
		$targetPathThumb = $storeFolderThumb;
		$_FILES['file']['name'] = fix_filename($_FILES['file']['name'],$transliteration,$convert_spaces, $replace_with);

	 	// Gen. new file name if exists
		if (file_exists($targetPath.$_FILES['file']['name']))
		{
			$i = 1;
			$info = pathinfo($_FILES['file']['name']);

			// append number
			while(file_exists($targetPath.$info['filename']."_".$i.".".$info['extension'])) {
				$i++;
			}
			$_FILES['file']['name'] = $info['filename']."_".$i.".".$info['extension'];
		}

		$targetFile =  $targetPath. $_FILES['file']['name'];
		$targetFileThumb =  $targetPathThumb. $_FILES['file']['name'];

		// check if image (and supported)
		if (in_array(fix_strtolower($info['extension']),$ext_img)) $is_img=TRUE;
		else $is_img=FALSE;

		// upload
		move_uploaded_file($tempFile,$targetFile);
		chmod($targetFile, 0755);

		if ($is_img)
		{
			$memory_error = FALSE;
			if ( ! create_img($targetFile, $targetFileThumb, 122, 91))
			{
				$memory_error = FALSE;
			}
			else
			{
				// TODO something with this long function baaaah...
				if( ! new_thumbnails_creation($targetPath,$targetFile,$_FILES['file']['name'],$current_path,$relative_image_creation,$relative_path_from_current_pos,$relative_image_creation_name_to_prepend,$relative_image_creation_name_to_append,$relative_image_creation_width,$relative_image_creation_height,$relative_image_creation_option,$fixed_image_creation,$fixed_path_from_filemanager,$fixed_image_creation_name_to_prepend,$fixed_image_creation_to_append,$fixed_image_creation_width,$fixed_image_creation_height,$fixed_image_creation_option))
				{
					$memory_error = FALSE;
				}
				else
				{
					$imginfo = getimagesize($targetFile);
					$srcWidth = $imginfo[0];
					$srcHeight = $imginfo[1];

					// resize images if set
					if ($image_resizing)
					{
						if ($image_resizing_width == 0) // if width not set
						{
							if ($image_resizing_height == 0)
							{
								$image_resizing_width = $srcWidth;
								$image_resizing_height = $srcHeight;
							}
							else
							{
								$image_resizing_width = $image_resizing_height*$srcWidth/$srcHeight;
							}
						}
						elseif ($image_resizing_height == 0) // if height not set
						{
							$image_resizing_height = $image_resizing_width*$srcHeight/$srcWidth;
						}

						// new dims and create
						$srcWidth = $image_resizing_width;
						$srcHeight = $image_resizing_height;
						create_img($targetFile, $targetFile, $image_resizing_width, $image_resizing_height, $image_resizing_mode);
					}

					//max resizing limit control
					$resize = FALSE;
					if ($image_max_width != 0 && $srcWidth > $image_max_width && $image_resizing_override === FALSE)
					{
						$resize = TRUE;
						$srcWidth = $image_max_width;

						if ($image_max_height == 0) $srcHeight = $image_max_width*$srcHeight/$srcWidth;
					}

					if ($image_max_height != 0 && $srcHeight > $image_max_height && $image_resizing_override === FALSE){
						$resize = TRUE;
						$srcHeight = $image_max_height;

						if ($image_max_width == 0) $srcWidth = $image_max_height*$srcWidth/$srcHeight;
					}

					if ($resize) create_img($targetFile, $targetFile, $srcWidth, $srcHeight, $image_max_mode);
				}
			}

			// not enough memory
			if ($memory_error)
			{
				unlink($targetFile);
				header('HTTP/1.1 406 Not enought Memory',TRUE,406);
				exit();
			}
		}
		echo $_FILES['file']['name'];
	}
	else // file ext. is not in the allowed list
	{
		header('HTTP/1.1 406 file not permitted',TRUE,406);
		exit();
	}
}
else // no files to upload
{
	header('HTTP/1.1 405 Bad Request', TRUE, 405);
	exit();
}

// redirect
if (isset($_POST['submit']))
{
	$query = http_build_query(array(
		'type'	  	=> $_POST['type'],
		'lang'	  	=> $_POST['lang'],
		'popup'	 	=> $_POST['popup'],
		'field_id'  => $_POST['field_id'],
		'fldr'	  	=> $_POST['fldr'],
	));

	header("location: dialog.php?" . $query);
}

Ya, memang hanya itu saja, lalu silahkan coba uploads melalui pustaka dan lihat hasilnya pada folder thumbnail. Jangan lupa mainkan jari telunjuk ya....