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  #7 (permalink)  
Antiguo 25/09/2011, 17:16
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Movingaway
 
Fecha de Ingreso: enero-2010
Mensajes: 149
Antigüedad: 14 años, 6 meses
Puntos: 0
Respuesta: Slide Theme Obscure 2.0

Código:
    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;
                    }
                }
                
                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;
                    
                    default:
                    
                        imagefilter($canvas, $imageFilters[$filterSettings[0]][0]);
                        break;
                        
                }
            }
        }
    }
    
    // output image to browser based on mime type
    show_image($mime_type, $canvas, $cache_dir);
    
    // remove image from memory
    imagedestroy($canvas);
    
} else {

    if(strlen($src)) {
        displayError("image " . $src . " not found");
    } else {
        displayError("no source specified");
    }
    
}

/**
 * 
 */
function show_image($mime_type, $image_resized, $cache_dir) {

    global $quality;

    // check to see if we can write to the cache directory
    $is_writable = 0;
    $cache_file_name = $cache_dir . '/' . get_cache_file();

    if (touch($cache_file_name)) {
        
        // give 666 permissions so that the developer 
        // can overwrite web server user
        chmod ($cache_file_name, 0666);
        $is_writable = 1;
        
    } else {
        
        $cache_file_name = NULL;
        header ('Content-type: ' . $mime_type);
        
    }

    switch ($mime_type) {
    
        case 'image/jpeg':
            imagejpeg($image_resized, $cache_file_name, $quality);
            break;
        
        default :
            $quality = floor ($quality * 0.09);
            imagepng($image_resized, $cache_file_name, $quality);
            
    }
    
    if ($is_writable) {
        show_cache_file ($cache_dir, $mime_type);
    }

    imagedestroy ($image_resized);
    
    displayError ("error showing image");

}

/**
 * 
 */
function get_request( $property, $default = 0 ) {
    
    if( isset($_REQUEST[$property]) ) {
    
        return $_REQUEST[$property];
        
    } else {
    
        return $default;
        
    }
    
}

/**
 * 
 */
function open_image($mime_type, $src) {

	$mime_type = strtolower($mime_type);
	
    if (stristr ($mime_type, 'gif')) {
    
        $image = imagecreatefromgif($src);
        
    } elseif (stristr($mime_type, 'jpeg')) {
    
        @ini_set ('gd.jpeg_ignore_warning', 1);
        $image = imagecreatefromjpeg($src);
        
    } elseif (stristr ($mime_type, 'png')) {
    
        $image = imagecreatefrompng($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
 */
function cleanCache() {

    $files = glob("cache/*", GLOB_BRACE);
    
    if (count($files) > 0) {
    
        $yesterday = time() - (24 * 60 * 60);
        
        usort($files, 'filemtime_compare');
        $i = 0;
        
        if (count($files) > CACHE_SIZE) {
            
            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
 */
function filemtime_compare($a, $b) {

    return filemtime($a) - filemtime($b);
    
}


/**
 * determine the file mime type
 */
function mime_type($file) {

    if (stristr(PHP_OS, 'WIN')) { 
        $os = 'WIN';
    } else { 
        $os = PHP_OS;
    }

    $mime_type = '';

    if (function_exists('mime_content_type')) {
        $mime_type = mime_content_type($file);
    }
    
	// use PECL fileinfo to determine mime type
	if (!valid_src_mime_type($mime_type)) {
		if (function_exists('finfo_open')) {
			$finfo = @finfo_open(FILEINFO_MIME);
			if ($finfo != '') {
				$mime_type = finfo_file($finfo, $file);
				finfo_close($finfo);
			}
		}
	}

    // try to determine mime type by using unix file command
    // this should not be executed on windows
    if (!valid_src_mime_type($mime_type) && $os != "WIN") {
        if (preg_match("/FREEBSD|LINUX/", $os)) {
			$mime_type = trim(@shell_exec('file -bi ' . escapeshellarg($file)));
        }
    }

    // use file's extension to determine mime type
    if (!valid_src_mime_type($mime_type)) {

        // set defaults
        $mime_type = 'image/png';
        // file details
        $fileDetails = pathinfo($file);
        $ext = strtolower($fileDetails["extension"]);
        // mime types
        $types = array(
             'jpg'  => 'image/jpeg',
             'jpeg' => 'image/jpeg',
             'png'  => 'image/png',
             'gif'  => 'image/gif'
         );
        
        if (strlen($ext) && strlen($types[$ext])) {
            $mime_type = $types[$ext];
        }
        
    }
    
    return $mime_type;

}
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