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<?php defined('SYSPATH') OR die('No direct script access.'); |
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/** |
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* This class is what the upload field accually returns |
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* and has all the nesessary info and manipulation abilities to save / delete / validate itself |
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* |
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* @package Jam |
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* @author Ivan Kerin |
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* @copyright (c) 2011-2012 Despark Ltd. |
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* @license http://creativecommons.org/licenses/by-sa/3.0/legalcode |
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*/ |
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class Kohana_Upload_Util { |
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public static function download($url, $directory, $filename = NULL) |
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{ |
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$url = str_replace(' ', '%20', $url); |
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if ( ! Valid::url($url)) |
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return FALSE; |
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$curl = curl_init($url); |
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$file = Upload_Util::combine($directory, uniqid()); |
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$handle = fopen($file, 'w'); |
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$headers = new HTTP_Header(); |
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curl_setopt($curl, CURLOPT_FILE, $handle); |
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE); |
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curl_setopt($curl, CURLOPT_HEADERFUNCTION, array($headers, 'parse_header_string')); |
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if (curl_exec($curl) === FALSE OR curl_getinfo($curl, CURLINFO_HTTP_CODE) !== 200) |
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{ |
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fclose($handle); |
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unlink($file); |
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throw new Kohana_Exception('Curl: Download Error: :error, status :status on url :url', array(':url' => $url, ':status' => curl_getinfo($curl, CURLINFO_HTTP_CODE), ':error' => curl_error($curl))); |
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} |
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fclose($handle); |
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if ($filename === NULL) |
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{ |
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if ( ! isset($headers['content-disposition']) |
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OR ! ($filename = Upload_Util::filename_from_content_disposition($headers['content-disposition']))) |
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{ |
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$mime_type = curl_getinfo($curl, CURLINFO_CONTENT_TYPE); |
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$url = urldecode(curl_getinfo($curl, CURLINFO_EFFECTIVE_URL)); |
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$filename = Upload_Util::filename_from_url($url, $mime_type); |
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} |
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} |
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$filename = substr(pathinfo($filename, PATHINFO_FILENAME), 0, 60).'.'.pathinfo($filename, PATHINFO_EXTENSION); |
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$result_file = Upload_Util::combine($directory, $filename); |
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rename($file, $result_file); |
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return is_file($result_file) ? $filename : FALSE; |
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} |
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/** |
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* Move the contents of the stream to a specified directory with a given name |
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* |
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* @param string $stream |
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* @param string $directory |
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* @param string $filename |
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*/ |
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public static function stream_copy_to_file($stream, $file) |
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{ |
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$stream_handle = fopen($stream, "r"); |
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$result_handle = fopen($file, 'w'); |
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$transfered_bytes = stream_copy_to_stream($stream_handle, $result_handle); |
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if ( (int) $transfered_bytes <= 0) |
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throw new Kohana_Exception('No data was transfered from :stream to :file ', array(':stream' => $stream, ':file' => Debug::path($file))); |
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fclose($stream_handle); |
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fclose($result_handle); |
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} |
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/** |
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* recursively delete directory |
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* |
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* @param string $directory |
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* @return boolean |
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*/ |
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public static function rmdir($directory) |
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{ |
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if ( ! is_dir($directory)) |
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return FALSE; |
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$files = array_diff(scandir($directory), array('.', '..')); |
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foreach ($files as $file) |
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{ |
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$current = $directory.DIRECTORY_SEPARATOR.$file; |
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if (is_dir($current)) |
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{ |
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Upload_Util::rmdir($current); |
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} |
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else |
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{ |
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unlink($current); |
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} |
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} |
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return rmdir($directory); |
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} |
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/** |
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* Method to make a filename safe for writing on the filesystem, removing all strange characters |
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* @param string $filename |
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* @return string |
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*/ |
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static public function sanitize($filename, $separator = '-') |
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{ |
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// Transliterate strange chars |
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$filename = UTF8::transliterate_to_ascii($filename); |
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// Sanitize the filename |
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$filename = preg_replace('/[^a-z0-9-\.]/', $separator, strtolower($filename)); |
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// Remove spaces |
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$filename = preg_replace('/\s+/u', $separator, $filename); |
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// Strip multiple dashes |
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$filename = preg_replace('/-{2,}/', $separator, $filename); |
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return $filename; |
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} |
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/** |
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* Check if a file looks like a filename ("file.ext") |
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* @param string $filename |
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* @return boolean |
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*/ |
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public static function is_filename($filename) |
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{ |
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return (bool) pathinfo($filename, PATHINFO_EXTENSION); |
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} |
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/** |
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* Return possible filenames from a given url. |
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* Filenames can be in the query or the url of the file itself |
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* |
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* @param string $url |
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* @return array |
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*/ |
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public static function filenames_candidates_from_url($url) |
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{ |
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$query = parse_url($url, PHP_URL_QUERY); |
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parse_str($query, $query); |
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$filename_candidates = array_values( (array) $query); |
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$url_filename = basename(parse_url($url, PHP_URL_PATH)); |
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$filename_candidates[] = $url_filename; |
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return $filename_candidates; |
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} |
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/** |
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* Create a filename path from function arguments with / based on the operating system |
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* @code |
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* $filename = file::combine('usr','local','bin'); // will be "user/local/bin" |
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* @endcode |
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* @return string |
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* @author Ivan Kerin |
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*/ |
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public static function combine() |
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{ |
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$args = func_get_args(); |
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foreach ($args as $i => & $arg) |
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{ |
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$arg = $i == 0 ? rtrim($arg, DIRECTORY_SEPARATOR) : trim($arg, DIRECTORY_SEPARATOR); |
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} |
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return join(DIRECTORY_SEPARATOR, array_filter($args)); |
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} |
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/** |
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* Detirmine the filename from the url |
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* @param string $url |
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* @param string $mime_type |
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* @return string |
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*/ |
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public static function filename_from_url($url, $mime_type = NULL) |
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{ |
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$filename_candidates = Upload_Util::filenames_candidates_from_url($url); |
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$filename_candidates = array_filter($filename_candidates, 'Upload_Util::is_filename'); |
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$file = count($filename_candidates) ? reset($filename_candidates) : uniqid(); |
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$extensions = File::exts_by_mime($mime_type); |
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$extension_candiates = array( |
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(is_array($extensions) ? end($extensions) : $extensions), |
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pathinfo($file, PATHINFO_EXTENSION), |
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'jpg', |
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); |
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$extension_candiates = array_filter($extension_candiates); |
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$extension = reset($extension_candiates); |
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return Upload_Util::sanitize(pathinfo($file, PATHINFO_FILENAME)).'.'.$extension; |
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} |
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public static function filename_from_content_disposition($content_disposition) |
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{ |
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if (preg_match('/filename="?(.*?)"?$/', $content_disposition, $matches)) |
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return $matches[1]; |
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return NULL; |
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} |
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/** |
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* Perform transformations on an image and store it at a different location (or overwrite existing) |
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* |
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* @param string $from |
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* @param string $to |
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* @param array $transformations |
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*/ |
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public static function transform_image($from, $to, array $transformations = array()) |
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{ |
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$image = Image::factory($from, Kohana::$config->load('jam.upload.image_driver')); |
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// Process tranformations |
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foreach ($transformations as $transformation => $params) |
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{ |
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if ( ! in_array($transformation, array('factory', 'save', 'render'))) |
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{ |
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// Call the method excluding the factory, save and render methods |
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call_user_func_array(array($image, $transformation), $params); |
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} |
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} |
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if ( ! file_exists(dirname($to))) |
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{ |
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mkdir(dirname($to), 0777, TRUE); |
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} |
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$image->save($to, 95); |
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} |
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} |
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This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.