Support » Fixing WordPress » Problem with image thumbs

  • I Work on WordPress 3.2.1 with the Equilibrium theme.

    When I upload an image it doesn’t show up as a thumb, but the same image is visable in the normal post.

    The code for example:
    Not working
    http://www.swstudio.nl/wp-content/themes/equilibrium/timthumb.php?src=http://www.swstudio.nl/wp-content/uploads/2011/10/Schermafbeelding-2011-06-16-om-20.51.54.jpg&h=210&w=306&q=90

    Working
    http://www.swstudio.nl/wp-content/uploads/2011/10/Schermafbeelding-2011-06-16-om-20.51.54.jpg

    I can’t get the thumbs looking to the right place, the go through the timthumb.php file.

    It worked perfectly. I changed from FTP-servers and now it can’t find the thumbs anymore.

    I already reinstalled WordPress, I deleted and reinstalled the theme.

    Hope someone can help me with this!!!

Viewing 3 replies - 1 through 3 (of 3 total)
  • By the way, this is the timthumb.php file:

    <?php
    /**
     * TimThumb script created by Ben Gillbanks, originally created by Tim McDaniels and Darren Hoyt
     * http://code.google.com/p/timthumb/
     *
     * GNU General Public License, version 2
     * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
     *
     * Examples and documentation available on the project homepage
     * http://www.binarymoon.co.uk/projects/timthumb/
     */
    
    define ('CACHE_SIZE', 1000);				// number of files to store before clearing cache
    define ('CACHE_CLEAR', 20);					// maximum number of files to delete on each cache clear
    define ('CACHE_USE', TRUE);					// use the cache files? (mostly for testing)
    define ('CACHE_MAX_AGE', 864000);			// time to cache in the browser
    define ('VERSION', '1.26');					// version number (to force a cache refresh)
    define ('DIRECTORY_CACHE', './cache');		// cache directory
    define ('MAX_WIDTH', 1500);					// maximum image width
    define ('MAX_HEIGHT', 1500);				// maximum image height
    define ('ALLOW_EXTERNAL', FALSE);			// allow external website (override security precaution - not advised!)
    define ('MEMORY_LIMIT', '30M');				// set PHP memory limit
    define ('MAX_FILE_SIZE', 1500000);			// file size limit to prevent possible DOS attacks (roughly 1.5 megabytes)
    define ('CURL_TIMEOUT', 10);				// timeout duration. Tweak as you require (lower = better)
    
    // external domains that are allowed to be displayed on your website
    $allowedSites = array (
    	'flickr.com',
    	'picasa.com',
    	'blogger.com',
    	'wordpress.com',
    	'img.youtube.com',
    	'upload.wikimedia.org',
    );
    
    // STOP MODIFYING HERE!
    // --------------------
    
    // sort out image source
    $src = get_request ('src', '');
    if ($src == '' || strlen ($src) <= 3) {
        display_error ('no image specified');
    }
    
    // clean params before use
    $src = clean_source ($src);
    
    // get mime type of src
    $mime_type = mime_type ($src);
    
    // used for external websites only
    $external_data_string = '';
    
    // generic file handle for reading and writing to files
    $fh = '';
    
    // check to see if this image is in the cache already
    // if already cached then display the image and die
    check_cache ($mime_type);
    
    // cache doesn't exist and then process everything
    // check to see if GD function exist
    if (!function_exists ('imagecreatetruecolor')) {
        display_error ('GD Library Error: imagecreatetruecolor does not exist - please contact your webhost and ask them to install the GD library');
    }
    
    if (function_exists ('imagefilter') && defined ('IMG_FILTER_NEGATE')) {
    	$imageFilters = array (
    		1 => array (IMG_FILTER_NEGATE, 0),
    		2 => array (IMG_FILTER_GRAYSCALE, 0),
    		3 => array (IMG_FILTER_BRIGHTNESS, 1),
    		4 => array (IMG_FILTER_CONTRAST, 1),
    		5 => array (IMG_FILTER_COLORIZE, 4),
    		6 => array (IMG_FILTER_EDGEDETECT, 0),
    		7 => array (IMG_FILTER_EMBOSS, 0),
    		8 => array (IMG_FILTER_GAUSSIAN_BLUR, 0),
    		9 => array (IMG_FILTER_SELECTIVE_BLUR, 0),
    		10 => array (IMG_FILTER_MEAN_REMOVAL, 0),
    		11 => array (IMG_FILTER_SMOOTH, 0),
    	);
    }
    
    // get standard input properties
    $new_width =  (int) abs (get_request ('w', 0));
    $new_height = (int) abs (get_request ('h', 0));
    $zoom_crop = (int) get_request ('zc', 1);
    $quality = (int) abs (get_request ('q', 90));
    $align = get_request ('a', 'c');
    $filters = get_request ('f', '');
    $sharpen = (bool) get_request ('s', 0);
    
    // set default width and height if neither are set already
    if ($new_width == 0 && $new_height == 0) {
        $new_width = 100;
        $new_height = 100;
    }
    
    // ensure size limits can not be abused
    $new_width = min ($new_width, MAX_WIDTH);
    $new_height = min ($new_height, MAX_HEIGHT);
    
    // set memory limit to be able to have enough space to resize larger images
    ini_set ('memory_limit', MEMORY_LIMIT);
    
    if (file_exists ($src)) {
    
        // open the existing image
        $image = open_image ($mime_type, $src);
        if ($image === false) {
            display_error ('Unable to open image : ' . $src);
        }
    
        // Get original width and height
        $width = imagesx ($image);
        $height = imagesy ($image);
    	$origin_x = 0;
    	$origin_y = 0;
    
        // generate new w/h if not provided
        if ($new_width && !$new_height) {
            $new_height = floor ($height * ($new_width / $width));
        } else if ($new_height && !$new_width) {
            $new_width = floor ($width * ($new_height / $height));
        }
    
    	// scale down and add borders
    	if ($zoom_crop == 3) {
    
    		$final_height = $height * ($new_width / $width);
    
    		if ($final_height > $new_height) {
    			$new_width = $width * ($new_height / $height);
    		} else {
    			$new_height = $final_height;
    		}
    
    	}
    
    	// create a new true color image
    	$canvas = imagecreatetruecolor ($new_width, $new_height);
    	imagealphablending ($canvas, false);
    
    	// Create a new transparent color for image
    	$color = imagecolorallocatealpha ($canvas, 0, 0, 0, 127);
    
    	// Completely fill the background of the new image with allocated color.
    	imagefill ($canvas, 0, 0, $color);
    
    	// scale down and add borders
    	if ($zoom_crop == 2) {
    
    		$final_height = $height * ($new_width / $width);
    
    		if ($final_height > $new_height) {
    
    			$origin_x = $new_width / 2;
    			$new_width = $width * ($new_height / $height);
    			$origin_x = round ($origin_x - ($new_width / 2));
    
    		} else {
    
    			$origin_y = $new_height / 2;
    			$new_height = $final_height;
    			$origin_y = round ($origin_y - ($new_height / 2));
    
    		}
    
    	}
    
    	// Restore transparency blending
    	imagesavealpha ($canvas, true);
    
    	if ($zoom_crop > 0) {
    
    		$src_x = $src_y = 0;
    		$src_w = $width;
    		$src_h = $height;
    
    		$cmp_x = $width / $new_width;
    		$cmp_y = $height / $new_height;
    
    		// calculate x or y coordinate and width or height of source
    		if ($cmp_x > $cmp_y) {
    
    			$src_w = round ($width / $cmp_x * $cmp_y);
    			$src_x = round (($width - ($width / $cmp_x * $cmp_y)) / 2);
    
    		} else if ($cmp_y > $cmp_x) {
    
    			$src_h = round ($height / $cmp_y * $cmp_x);
    			$src_y = round (($height - ($height / $cmp_y * $cmp_x)) / 2);
    
    		}
    
    		// positional cropping!
    		switch ($align) {
    			case 't':
    			case 'tl':
    			case 'lt':
    			case 'tr':
    			case 'rt':
    				$src_y = 0;
    				break;
    
    			case 'b':
    			case 'bl':
    			case 'lb':
    			case 'br':
    			case 'rb':
    				$src_y = $height - $src_h;
    				break;
    
    			case 'l':
    			case 'tl':
    			case 'lt':
    			case 'bl':
    			case 'lb':
    				$src_x = 0;
    				break;
    
    			case 'r':
    			case 'tr':
    			case 'rt':
    			case 'br':
    			case 'rb':
    				$src_x = $width - $new_width;
    				$src_x = $width - $src_w;
    				break;
    
    			default:
    				break;
    		}
    
    		imagecopyresampled ($canvas, $image, $origin_x, $origin_y, $src_x, $src_y, $new_width, $new_height, $src_w, $src_h);
    
        } else {
    
            // copy and resize part of an image with resampling
            imagecopyresampled ($canvas, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
    
        }
    
        if ($filters != '' && function_exists ('imagefilter') && defined ('IMG_FILTER_NEGATE')) {
            // apply filters to image
            $filterList = explode ('|', $filters);
            foreach ($filterList as $fl) {
    
                $filterSettings = explode (',', $fl);
                if (isset ($imageFilters[$filterSettings[0]])) {
    
                    for ($i = 0; $i < 4; $i ++) {
                        if (!isset ($filterSettings[$i])) {
    						$filterSettings[$i] = null;
                        } else {
    						$filterSettings[$i] = (int) $filterSettings[$i];
    					}
                    }
    
                    switch ($imageFilters[$filterSettings[0]][1]) {
    
                        case 1:
    
                            imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1]);
                            break;
    
                        case 2:
    
                            imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2]);
                            break;
    
                        case 3:
    
                            imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2], $filterSettings[3]);
                            break;
    
                        case 4:
    
                            imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2], $filterSettings[3], $filterSettings[4]);
                            break;
    
                        default:
    
                            imagefilter ($canvas, $imageFilters[$filterSettings[0]][0]);
                            break;
    
                    }
                }
            }
        }
    
    	// sharpen image
    	if ($sharpen && function_exists ('imageconvolution')) {
    
    		$sharpenMatrix = array (
    			array (-1,-1,-1),
    			array (-1,16,-1),
    			array (-1,-1,-1),
    		);
    
    		$divisor = 8;
    		$offset = 0;
    
    		imageconvolution ($canvas, $sharpenMatrix, $divisor, $offset);
    
    	}
    
        // output image to browser based on mime type
        show_image ($mime_type, $canvas);
    
        // remove image from memory
        imagedestroy ($canvas);
    
    	// if not in cache then clear some space and generate a new file
    	clean_cache ();
    
    	die ();
    
    } else {
    
        if (strlen ($src)) {
            display_error ('image ' . $src . ' not found');
        } else {
            display_error ('no source specified');
        }
    
    }
    
    /**
     *
     * @global <type> $quality
     * @param <type> $mime_type
     * @param <type> $image_resized
     */
    function show_image ($mime_type, $image_resized) {
    
        global $quality;
    
        $cache_file = get_cache_file ($mime_type);
    
    	if (strpos ($mime_type, 'jpeg') > 1) {
    		imagejpeg ($image_resized, $cache_file, $quality);
    	} else {
    		imagepng ($image_resized, $cache_file, floor ($quality * 0.09));
    	}
    
    	show_cache_file ($mime_type);
    
    }
    
    /**
     *
     * @param <type> $property
     * @param <type> $default
     * @return <type>
     */
    function get_request ($property, $default = 0) {
    
        if (isset ($_GET[$property])) {
            return $_GET[$property];
        } else {
            return $default;
        }
    
    }
    
    /**
     *
     * @param <type> $mime_type
     * @param <type> $src
     * @return <type>
     */
    function open_image ($mime_type, $src) {
    
    	if (strpos ($mime_type, 'jpeg') !== false) {
            $image = imagecreatefromjpeg ($src);
        } elseif (strpos ($mime_type, 'png') !== false) {
            $image = imagecreatefrompng ($src);
    	} elseif (strpos ($mime_type, 'gif') !== false) {
            $image = imagecreatefromgif ($src);
        }
    
        return $image;
    
    }
    
    /**
     * clean out old files from the cache
     * you can change the number of files to store and to delete per loop in the defines at the top of the code
     *
     * @return <type>
     */
    function clean_cache () {
    
    	// add an escape
    	// Reduces the amount of cache clearing to save some processor speed
    	if (rand (1, 50) > 10) {
    		return true;
    	}
    
    	flush ();
    
        $files = glob (DIRECTORY_CACHE . '/*', GLOB_BRACE);
    
    	if (count ($files) > CACHE_SIZE) {
    
            $yesterday = time () - (24 * 60 * 60);
    
            usort ($files, 'filemtime_compare');
            $i = 0;
    
    		foreach ($files as $file) {
    
    			$i ++;
    
    			if ($i >= CACHE_CLEAR) {
    				return;
    			}
    
    			if (@filemtime ($file) > $yesterday) {
    				return;
    			}
    
    			if (file_exists ($file)) {
    				unlink ($file);
    			}
    
    		}
    
        }
    
    }
    
    /**
     * compare the file time of two files
     *
     * @param <type> $a
     * @param <type> $b
     * @return <type>
     */
    function filemtime_compare ($a, $b) {
    
    	$break = explode ('/', $_SERVER['SCRIPT_FILENAME']);
    	$filename = $break[count ($break) - 1];
    	$filepath = str_replace ($filename, '', $_SERVER['SCRIPT_FILENAME']);
    
    	$file_a = realpath ($filepath . $a);
    	$file_b = realpath ($filepath . $b);
    
        return filemtime ($file_a) - filemtime ($file_b);
    
    }
    
    /**
     * determine the file mime type
     *
     * @param <type> $file
     * @return <type>
     */
    function mime_type ($file) {
    
    	$file_infos = getimagesize ($file);
    	$mime_type = $file_infos['mime'];
    
    	// no mime type
    	if (empty ($mime_type)) {
    		display_error ('no mime type specified');
    	}
    
        // use mime_type to determine mime type
        if (!preg_match ("/jpg|jpeg|gif|png/i", $mime_type)) {
    		display_error ('Invalid src mime type: ' . $mime_type);
        }
    
        return strtolower ($mime_type);
    
    }
    
    /**
     *
     * @param <type> $mime_type
     */
    function check_cache ($mime_type) {
    
    	if (CACHE_USE) {
    
    		if (!show_cache_file ($mime_type)) {
    			// make sure cache dir exists
    			if (!file_exists (DIRECTORY_CACHE)) {
    				// give 777 permissions so that developer can overwrite
    				// files created by web server user
    				mkdir (DIRECTORY_CACHE);
    				chmod (DIRECTORY_CACHE, 0777);
    			}
    		}
    
    	}
    
    }
    
    /**
     *
     * @param <type> $mime_type
     * @return <type>
     */
    function show_cache_file ($mime_type) {
    
    	// use browser cache if available to speed up page load
    	if (!empty ($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
    		if (strtotime ($_SERVER['HTTP_IF_MODIFIED_SINCE']) < strtotime ('now')) {
    			header ('HTTP/1.1 304 Not Modified');
    			die ();
    		}
    	}
    
    	$cache_file = get_cache_file ($mime_type);
    
    	if (file_exists ($cache_file)) {
    
    		// change the modified headers
    		$gmdate_expires = gmdate ('D, d M Y H:i:s', strtotime ('now +10 days')) . ' GMT';
    		$gmdate_modified = gmdate ('D, d M Y H:i:s') . ' GMT';
    
    		// send content headers then display image
    		header ('Content-Type: ' . $mime_type);
    		header ('Accept-Ranges: bytes');
    		header ('Last-Modified: ' . $gmdate_modified);
    		header ('Content-Length: ' . filesize ($cache_file));
    		header ('Cache-Control: max-age=' . CACHE_MAX_AGE . ', must-revalidate');
    		header ('Expires: ' . $gmdate_expires);
    
    		if (!@readfile ($cache_file)) {
    			$content = file_get_contents ($cache_file);
    			if ($content != FALSE) {
    				echo $content;
    			} else {
    				display_error ('cache file could not be loaded');
    			}
    		}
    
    		die ();
    
        }
    
    	return FALSE;
    
    }
    
    /**
     *
     * @staticvar string $cache_file
     * @param <type> $mime_type
     * @return string
     */
    function get_cache_file ($mime_type) {
    
        static $cache_file;
    	global $src;
    
    	$file_type = '.png';
    
    	if (strpos ($mime_type, 'jpeg') > 1) {
    		$file_type = '.jpg';
        }
    
        if (!$cache_file) {
    		// filemtime is used to make sure updated files get recached
            $cache_file = DIRECTORY_CACHE . '/' . md5 ($_SERVER ['QUERY_STRING'] . VERSION . filemtime ($src)) . $file_type;
        }
    
        return $cache_file;
    
    }
    
    /**
     *
     * @param <type> $url
     * @return <type>
     */
    function validate_url ($url) {
    	$pattern = "/\b(?:(?:https?):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i";
    	return preg_match ($pattern, $url);
    }
    
    /**
     *
     * @global array $allowedSites
     * @param string $src
     * @return string
     */
    function check_external ($src) {
    
    	global $allowedSites;
    
    	// work out file details
    	$fileDetails = pathinfo ($src);
    	$filename = 'external_' . md5 ($src);
    	$local_filepath = DIRECTORY_CACHE . '/' . $filename . '.' . strtolower ($fileDetails['extension']);
    
    	// only do this stuff the file doesn't already exist
    	if (!file_exists ($local_filepath)) {
    
    		if (strpos (strtolower ($src), 'http://') !== false || strpos (strtolower ($src), 'https://') !== false) {
    
    			if (!validate_url ($src)) {
    				display_error ('invalid url');
    			}
    
    			$url_info = parse_url ($src);
    
    			// convert youtube video urls
    			// need to tidy up the code
    
    			if ($url_info['host'] == 'www.youtube.com' || $url_info['host'] == 'youtube.com') {
    				parse_str ($url_info['query']);
    
    				if (isset ($v)) {
    					$src = 'http://img.youtube.com/vi/' . $v . '/0.jpg';
    					$url_info['host'] = 'img.youtube.com';
    				}
    			}
    
    			// check allowed sites (if required)
    			if (ALLOW_EXTERNAL) {
    
    				$isAllowedSite = true;
    
    			} else {
    
    				$isAllowedSite = false;
    				foreach ($allowedSites as $site) {
    					if (strpos (strtolower ($url_info['host']), $site) !== false) {
    						$isAllowedSite = true;
    					}
    				}
    
    			}
    
    			// if allowed
    			if ($isAllowedSite) {
    
    				if (function_exists ('curl_init')) {
    
    					global $fh;
    
    					$fh = fopen ($local_filepath, 'w');
    					$ch = curl_init ($src);
    
    					curl_setopt ($ch, CURLOPT_TIMEOUT, CURL_TIMEOUT);
    					curl_setopt ($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0');
    					curl_setopt ($ch, CURLOPT_URL, $src);
    					curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
    					curl_setopt ($ch, CURLOPT_HEADER, 0);
    					curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    					curl_setopt ($ch, CURLOPT_FILE, $fh);
    					curl_setopt ($ch, CURLOPT_WRITEFUNCTION, 'curl_write');
    
    					// error so die
    					if (curl_exec ($ch) === FALSE) {
    						unlink ($local_filepath);
    						touch ($local_filepath);
    						display_error ('error reading file ' . $src . ' from remote host: ' . curl_error ($ch));
    					}
    
    					curl_close ($ch);
    					fclose ($fh);
    
                    } else {
    
    					if (!$img = file_get_contents ($src)) {
    						display_error ('remote file for ' . $src . ' can not be accessed. It is likely that the file permissions are restricted');
    					}
    
    					if (file_put_contents ($local_filepath, $img) == FALSE) {
    						display_error ('error writing temporary file');
    					}
    
    				}
    
    				if (!file_exists ($local_filepath)) {
    					display_error ('local file for ' . $src . ' can not be created');
    				}
    
    				$src = $local_filepath;
    
    			} else {
    
    				display_error ('remote host "' . $url_info['host'] . '" not allowed');
    
    			}
    
    		}
    
        } else {
    
    		$src = $local_filepath;
    
    	}
    
        return $src;
    
    }
    
    /**
     * callback for curl command to receive external images
     * limit the amount of data downloaded from external servers
     *
     * @global <type> $data_string
     * @param <type> $handle
     * @param <type> $data
     * @return <type>
     */
    function curl_write ($handle, $data) {
    
    	global $external_data_string, $fh;
    
    	fwrite ($fh, $data);
    	$external_data_string .= $data;
    
    	if (strlen ($external_data_string) > MAX_FILE_SIZE) {
    		return 0;
    	} else {
    		return strlen ($data);
    	}
    
    }
    
    /**
     * tidy up the image source url
     *
     * @param <type> $src
     * @return string
     */
    function clean_source ($src) {
    
    	$host = str_replace ('www.', '', $_SERVER['HTTP_HOST']);
    	$regex = "/^(http(s|):\/\/)(www\.|)" . $host . "\//i";
    
    	$src = preg_replace ($regex, '', $src);
    	$src = strip_tags ($src);
        $src = check_external ($src);
    
        // remove slash from start of string
        if (strpos ($src, '/') === 0) {
            $src = substr ($src, -(strlen ($src) - 1));
        }
    
        // don't allow users the ability to use '../'
        // in order to gain access to files below document root
        $src = preg_replace ("/\.\.+\//", "", $src);
    
        // get path to image on file system
        $src = get_document_root ($src) . '/' . $src;
    
    	if (!is_file ($src)) {
    		display_error ('source is not a valid file');
    	}
    
    	if (filesize ($src) > MAX_FILE_SIZE) {
    		display_error ('source file is too big (filesize > MAX_FILE_SIZE)');
    	}
    
    	if (filesize ($src) <= 0) {
    		display_error ('source file <= 0 bytes. Possible external file download error (file is too large)');
    	}
    
        return realpath ($src);
    
    }
    
    /**
     *
     * @param <type> $src
     * @return string
     */
    function get_document_root ($src) {
    
        // check for unix servers
        if (file_exists ($_SERVER['DOCUMENT_ROOT'] . '/' . $src)) {
            return $_SERVER['DOCUMENT_ROOT'];
        }
    
        // check from script filename (to get all directories to timthumb location)
        $parts = array_diff (explode ('/', $_SERVER['SCRIPT_FILENAME']), explode ('/', $_SERVER['DOCUMENT_ROOT']));
    
    	$path = $_SERVER['DOCUMENT_ROOT'];
    
        foreach ($parts as $part) {
            $path .= '/' . $part;
            if (file_exists ($path . '/' . $src)) {
                return $path;
            }
        }
    
        // special check for microsoft servers
        if (!isset ($_SERVER['DOCUMENT_ROOT'])) {
            $path = str_replace ("/", "\\", $_SERVER['ORIG_PATH_INFO']);
            $path = str_replace ($path, '', $_SERVER['SCRIPT_FILENAME']);
    
            if (file_exists ($path . '/' . $src)) {
                return $path;
            }
        }
    
        display_error ('file not found');
    
    }
    
    /**
     * generic error message
     *
     * @param <type> $errorString
     */
    function display_error ($errorString = '') {
    
        header ('HTTP/1.1 400 Bad Request');
    	echo '<pre>' . htmlentities ($errorString);
    	echo '<br />Query String : ' . htmlentities ($_SERVER['QUERY_STRING']);
    	echo '<br />TimThumb version : ' . VERSION . '</pre>';
        die ();
    
    }
    jbchurch39437

    (@jbchurch39437)

    Hey did you get this issue resolved? I’m having the same problem after doing the same thing. It’s about to drive me nuts! Using WP 3.4.1

    esmi

    (@esmi)

    Forum Moderator

    This topic is 9 months old., Please post your own topic.

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