<?php
class PictureCache {
/*-------------------*/
/* V A R I A B L E S */
/*-------------------*/
/**
* name of the cache dir
*
* @var string
*/
const CACHE_DIR = 'pic_cache';
/**
* prefix for every cache file
*
* @var string
*/
const PREFIX = 'tc_';
/**
* check if cache dir is available
*
* @var boolean
*/
const CHECK_CACHE_DIR = FALSE;
/**
* amount of seconds thumbs should be cached. 0 = no cache
*
* @var int
*/
protected $cache_time = 0;
/**
* possible image formats
*
* @var array
*/
protected $types = array(1 => 'gif', 2 => 'jpg', 3 => 'png', 15 => 'wbmp', 999 => 'string');
/**
* name/path of picture
*
* @var string
*/
protected $image_path;
/**
* image type of cached thumbnail
*
* @var int
*/
protected $image_type = 3;
/**
* salt for generating cache filename
*
* @var int
*/
protected $salt = '';
/*-----------------------*/
/* C O N S T R U C T O R */
/*-----------------------*/
/**
* Constructor
*
* @param string $file path/filename of picture
* @param int $type image type
* @param int $seconds amount of seconds thumbs should be cached. 0 = no cache
* @return void
* @uses checkCacheDir()
* @uses $cache_time
* @uses $image_path
* @uses $image_type
*/
function __construct($file = '', $type = 3, $seconds = 0, $salt = '') {
if ($this->checkCacheDir() === FALSE) {
die('error creating cache directory');
} // end if
$this->cache_time = (int) $seconds;
$this->image_path = (string) $file;
$this->image_type = (int) $type;
$this->salt = (int) $salt;
} // end constructor
/*-------------------*/
/* F U N C T I O N S */
/*-------------------*/
/**
* Checks if the cache directory exists, else trys to create it
*
* @return boolean
* @uses $check_cache_dir
* @uses $cache_dir
*/
protected function checkCacheDir() {
if (self::CHECK_CACHE_DIR == FALSE || is_dir(self::CACHE_DIR)) {
return (boolean) TRUE;
} else {
return (boolean) ((!mkdir(self::CACHE_DIR, 0700)) ? FALSE : TRUE);
} // end if
} // end function
/**
* Sticks together filename + path
*
* @return string
* @uses $cache_dir
* @uses $prefix
* @uses $image_path
* @uses $types
* @uses $image_type
*/
public function returnCachePicturename() {
return (string) self::CACHE_DIR . '/' . self::PREFIX . md5($this->salt . $this->image_path) . '.' . $this->types[$this->image_type];
} // end function
/**
* Checks if a picture is cached and up to date
*
* @return boolean
* @uses returnCachePicturename()
* @uses $cache_time
*/
public function isPictureCached() {
$filetime = @filemtime($this->returnCachePicturename());
if (!isset($filetime)) {
return (boolean) FALSE;
} // end if
if ((time() - $filetime) > $this->cache_time) {
return (boolean) FALSE;
} // end if
return (boolean) TRUE;
} // end function
/**
* Returns a cached picture
*
* @return mixed
* @uses returnCachePicturename()
*/
public function returnPictureCache() {
return readfile($this->returnCachePicturename(), 'r');
} // end function
/**
* writes a thumbnail to a file
*
* @param $image variable with image
* @param int $quality jpg-quality: 0-100
* @return void
* @uses $thumbnail_type
* @uses $thumbnail
* @uses returnCachePicturename()
*/
public function writePictureCache($image = '', $quality = 75) {
if (strlen(trim($image)) > 0) {
switch ($this->image_type) {
case 1:
imagegif($image, $this->returnCachePicturename());
break;
case 2:
$quality = (int) $quality;
if ($quality < 0 || $quality > 100) {
$quality = 75;
} // end if
imagejpeg($image, $this->returnCachePicturename(), $quality);
break;
case 3:
imagepng($image, $this->returnCachePicturename());
break;
case 15:
imagewbmp($image, $this->returnCachePicturename());
break;
} // end switch
}
} // end function
/**
* returns the path/filename of the cached thumbnail
*
* if cached pic is not available returns false
*
* @param string $format gif, jpg, png, wbmp
* @param int $quality jpg-quality: 0-100
* @return mixed string or FALSE if no cached pic is available
* @uses returnCachePicturename()
*/
public function getCacheFilepath($format = 'png', $quality = 75) {
if (file_exists($this->returnCachePicturename())) {
return $this->returnCachePicturename();
} else {
return (boolean) FALSE;
}
} // end function
/**
* returns the cache time in seconds
*
* @return int $cache_time
* @uses $cache_time
*/
public function getCacheTime() {
return (int) $this->cache_time;
} // end function
} // end class PictureCache
?>
la communauté d'entraide francophone dédiée au PHP
compatibilité avec php 5.3
Bonjour à tous, j'aimerais savoir ce qu'il faut changer dans ce fichier pour qu'il soit compatible avec PHP 5.3
Si je l'ai déjà testé et voila le message d'erreur que j'avais trim() expects parameter 1 to be string, resource given in... ligne 217 donc cette ligne dans le fichier
if (strlen(trim($image)) > 0) { public function writePictureCache($image = '', $quality = 75) {
if (strlen(trim($image)) > 0) {
switch ($this->image_type) {
case 1:
imagegif($image, $this->returnCachePicturename());
break;
case 2:
$quality = (int) $quality;
if ($quality < 0 || $quality > 100) {
$quality = 75;
} // end if
imagejpeg($image, $this->returnCachePicturename(), $quality);
break;
case 3:
imagepng($image, $this->returnCachePicturename());
break;
case 15:
imagewbmp($image, $this->returnCachePicturename());
break;
} // end switch
}
} // end function