phpthumb.class.php

是一款免费的轻量级论坛软件

<?php

ob_start();
if (!include_once(dirname(__FILE__).'/phpthumb.functions.php')) {
	ob_end_flush();
	die('failed to include_once("'.realpath(dirname(__FILE__).'/phpthumb.functions.php').'")');
}
ob_end_clean();

class phpthumb {
	var $src  = null;    // SouRCe filename
	var $new  = null;    // NEW image (phpThumb.php only)
	var $w    = null;    // Width
	var $h    = null;    // Height
	var $wp   = null;    // Width  (Portrait Images Only)
	var $hp   = null;    // Height (Portrait Images Only)
	var $wl   = null;    // Width  (Landscape Images Only)
	var $hl   = null;    // Height (Landscape Images Only)
	var $ws   = null;    // Width  (Square Images Only)
	var $hs   = null;    // Height (Square Images Only)
	var $f    = null;    // Format
	var $q    = 75;      // jpeg output Quality
	var $sx   = null;    // Source crop top-left X position
	var $sy   = null;    // Source crop top-left Y position
	var $sw   = null;    // Source crop Width
	var $sh   = null;    // Source crop Height
	var $zc   = null;    // Zoom Crop
	var $bc   = null;    // Border Color
	var $bg   = null;    // BackGround color
	var $fltr = array(); // FiLTeRs
	var $goto = null;    // GO TO url after processing
	var $err  = null;    // default ERRor image filename
	var $xto  = null;    // extract eXif Thumbnail Only
	var $ra   = null;    // Rotate by Angle
	var $ar   = null;    // Auto Rotate
	var $aoe  = null;    // Allow Output Enlargement
	var $far  = null;    // Fixed Aspect Ratio
	var $iar  = null;    // Ignore Aspect Ratio
	var $maxb = null;    // MAXimum Bytes
	var $down = null;    // DOWNload thumbnail filename
	var $md5s = null;    // MD5 hash of Source image
	var $file = null;    // >>deprecated, do not use<<

	var $phpThumbDebug = null;
	// END PARAMETERS


	// public:
	// START CONFIGURATION OPTIONS (for object mode only)
	// See phpThumb.config.php for descriptions of what each of these settings do

	// * Directory Configuration
	var $config_cache_directory                      = null;
	var $config_cache_disable_warning                = true;
	var $config_cache_source_enabled                 = false;
	var $config_cache_source_directory               = null;
	var $config_temp_directory                       = null;
	var $config_document_root                        = null;

	// * Default output configuration:
	var $config_output_format                        = 'jpeg';
	var $config_output_maxwidth                      = 0;
	var $config_output_maxheight                     = 0;
	var $config_output_interlace                     = true;

	// * Error message configuration
	var $config_error_image_width                    = 400;
	var $config_error_image_height                   = 100;
	var $config_error_message_image_default          = '';
	var $config_error_bgcolor                        = 'CCCCFF';
	var $config_error_textcolor                      = 'FF0000';
	var $config_error_fontsize                       = 1;
	var $config_error_die_on_error                   = false;
	var $config_error_silent_die_on_error            = false;
	var $config_error_die_on_source_failure          = true;

	// * Anti-Hotlink Configuration:
	var $config_nohotlink_enabled                    = true;
	var $config_nohotlink_valid_domains              = array();
	var $config_nohotlink_erase_image                = true;
	var $config_nohotlink_text_message               = 'Off-server thumbnailing is not allowed';
	// * Off-server Linking Configuration:
	var $config_nooffsitelink_enabled                = false;
	var $config_nooffsitelink_valid_domains          = array();
	var $config_nooffsitelink_require_refer          = false;
	var $config_nooffsitelink_erase_image            = true;
	var $config_nooffsitelink_text_message           = 'Off-server linking is not allowed';
	var $config_cache_differentiate_offsite          = true;

	// * Border & Background default colors
	var $config_border_hexcolor                      = '000000';
	var $config_background_hexcolor                  = 'FFFFFF';

	// * TrueType Fonts
	var $config_ttf_directory                        = '.';

	var $config_max_source_pixels                    = null;
	var $config_use_exif_thumbnail_for_speed         = false;

	var $config_imagemagick_path                     = null;
	var $config_prefer_imagemagick                   = true;

	var $config_cache_maxage                         = null;
	var $config_cache_maxsize                        = null;
	var $config_cache_maxfiles                       = null;

	var $config_cache_source_filemtime_ignore_local  = false;
	var $config_cache_source_filemtime_ignore_remote = false;

	var $config_cache_default_only_suffix            = false;

	// * MySQL
	var $config_mysql_query                          = null;
	var $config_mysql_hostname                       = null;
	var $config_mysql_username                       = null;
	var $config_mysql_password                       = null;
	var $config_mysql_database                       = null;

	// * Security
	var $config_high_security_enabled                = false;
	var $config_config_high_security_password        = null;

	var $config_disable_debug                        = false;
	var $config_allow_src_above_docroot              = false;
	var $config_allow_src_above_phpthumb             = true;
	var $config_allow_parameter_file                 = false;
	var $config_allow_parameter_goto                 = false;

	// END CONFIGURATION OPTIONS


	// public: error messages (read-only)
	var $debugmessages = array();
	var $debugtiming   = array();
	var $fatalerror    = null;


	// private: (should not be modified directly)
	var $thumbnailQuality = 75;
	var $thumbnailFormat  = null;

	var $sourceFilename   = null;
	var $rawImageData     = null;

	var $gdimg_output     = null;
	var $gdimg_source     = null;

	var $getimagesizeinfo = null;

	var $source_width  = null;
	var $source_height = null;

	var $thumbnailCropX = null;
	var $thumbnailCropY = null;
	var $thumbnailCropW = null;
	var $thumbnailCropH = null;

	var $exif_thumbnail_width  = null;
	var $exif_thumbnail_height = null;
	var $exif_thumbnail_type   = null;
	var $exif_thumbnail_data   = null;

	var $thumbnail_width        = null;
	var $thumbnail_height       = null;
	var $thumbnail_image_width  = null;
	var $thumbnail_image_height = null;

	var $cache_filename         = null;

	var $is_alpha = false;

	var $iswindows = null;
	var $osslash   = null;

	var $phpthumb_version = '1.6.1a-200508261305';

	//////////////////////////////////////////////////////////////////////

	// public: constructor
	function phpThumb() {
		$this->DebugTimingMessage('phpThumb() constructor', __FILE__, __LINE__);
		$this->config_max_source_pixels = round(max(intval(ini_get('memory_limit')), intval(get_cfg_var('memory_limit'))) * 1048576 * 0.20); // 20% of memory_limit

		if (phpthumb_functions::gd_version() < 1) {
			die('No GD support detected');
		}
		if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
			$this->iswindows = true;
			$this->osslash   = '\\';
		} else {
			$this->iswindows = false;
			$this->osslash   = '/';
		}
		if (@$_SERVER['DOCUMENT_ROOT']) {
			$this->config_document_root = $_SERVER['DOCUMENT_ROOT'];
		}
	}

	// public:
	function setSourceFilename($sourceFilename) {
		$this->rawImageData   = null;
		$this->sourceFilename = $sourceFilename;
		$this->DebugMessage('setSourceFilename('.$sourceFilename.') set $this->sourceFilename to "'.$this->sourceFilename.'"', __FILE__, __LINE__);
		return true;
	}

	// public:
	function setSourceData($rawImageData, $sourceFilename='') {
		$this->sourceFilename = null;
		$this->rawImageData   = $rawImageData;
		if ($this->config_cache_source_enabled) {
			$sourceFilename = ($sourceFilename ? $sourceFilename : md5($rawImageData));
			if (!is_dir($this->config_cache_source_directory) && !$this->phpThumbDebug) {
				$this->ErrorImage('$this->config_cache_source_directory ('.$this->config_cache_source_directory.') is not a directory');
			} elseif (!is_writable($this->config_cache_source_directory) && !$this->phpThumbDebug) {
				$this->ErrorImage('$this->config_cache_source_directory ('.$this->config_cache_source_directory.') is not writable');
			}
			$this->DebugMessage('setSourceData() attempting to save source image to "'.$this->config_cache_source_directory.$this->osslash.urlencode($sourceFilename).'"', __FILE__, __LINE__);
			if ($fp = @fopen($this->config_cache_source_directory.$this->osslash.urlencode($sourceFilename), 'wb')) {
				fwrite($fp, $rawImageData);
				fclose($fp);
			} elseif (!$this->phpThumbDebug) {
				$this->ErrorImage('setSourceData() failed to write to source cache ('.$this->config_cache_source_directory.$this->osslash.urlencode($sourceFilename).')');
			}
		}
		return true;
	}

	// public:
	function setSourceImageResource($gdimg) {
		$this->gdimg_source = $gdimg;
		return true;
	}

	// public:
	function setParameter($param, $value) {
		switch ($param) {
			case 'src':
				$this->setSourceFilename($this->ResolveFilenameToAbsolute($value));
				break;

			default:
				$this->$param = $value;
				break;
		}
		$this->$param = $value;
		return true;
	}

	// public:
	function getParameter($param) {
		//if (property_exists('phpThumb', $param)) {
			return $this->$param;
		//}
		//$this->DebugMessage('setParameter() attempting to set non-existant parameter "'.$param.'"', __FILE__, __LINE__);
		//return false;
	}


	// public:
	function GenerateThumbnail() {

		$this->setOutputFormat();
		$this->ResolveSource();
		$this->SetCacheFilename();
		$this->ExtractEXIFgetImageSize();
		if (!$this->SourceImageToGD()) {
			return false;
		}
		$this->Rotate();
		$this->CreateGDoutput();

		switch ($this->far) {
			case 'L':
			case 'TL':
			case 'BL':
				$destination_offset_x = 0;
				$destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);
				break;
			case 'R':
			case 'TR':
			case 'BR':
				$destination_offset_x =  round($this->thumbnail_width  - $this->thumbnail_image_width);
				$destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);
				break;
			case 'T':
			case 'TL':
			case 'TR':
				$destination_offset_x = round(($this->thumbnail_width  - $this->thumbnail_image_width)  / 2);
				$destination_offset_y = 0;
				break;
			case 'B':
			case 'BL':
			case 'BR':
				$destination_offset_x = round(($this->thumbnail_width  - $this->thumbnail_image_width)  / 2);
				$destination_offset_y =  round($this->thumbnail_height - $this->thumbnail_image_height);
				break;
			case 'C':
			default:
				$destination_offset_x = round(($this->thumbnail_width  - $this->thumbnail_image_width)  / 2);
				$destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);