PHP：如何从.ttf文件中读取字体的“标题”？

Array
(
    [1] => Almonte Snow
    [2] => Regular
    [3] => RayLarabie: Almonte Snow: 2000
    [4] => Almonte Snow
    [5] => Version 2.000 2004
    [6] => AlmonteSnow
    [8] => Ray Larabie
    [9] => Ray Larabie
    [10] => Larabie Fonts is able to offer unique free fonts through the generous support of visitors to the site. Making fonts is my full-time job and every donation, in any amount, enables me to continue running the site and creating new fonts. If you would like to support Larabie Fonts visit www.larabiefonts.com for details.
    [11] => http://www.larabiefonts.com
    [12] => http://www.typodermic.com
)

<?php 
    include \'ttfInfo.class.php\'; 
    $fontinfo = getFontInfo(\'c:\\windows\\fonts\\_LDS_almosnow.ttf\'); 
    echo \'<pre>\'; 
    print_r($fontinfo); 
    echo \'</pre>\'; 
?>

<?php 
/** 
 * ttfInfo class 
 * Retrieve data stored in a TTF files \'name\' table 
 * 
 * @original author Unknown 
 * found at http://www.phpclasses.org/browse/package/2144.html 
 * 
 * @ported for used on http://www.nufont.com 
 * @author Jason Arencibia 
 * @version 0.2 
 * @copyright (c) 2006 GrayTap Media 
 * @website http://www.graytap.com 
 * @license GPL 2.0 
 * @access public 
 * 
 * @todo: Make it Retrieve additional information from other tables 
 *  
 */ 
class ttfInfo { 
    /** 
    * variable $_dirRestriction 
    * Restrict the resource pointer to this directory and above. 
    * Change to 1 for to allow the class to look outside of it current directory 
    * @protected 
    * @var int 
    */ 
    protected $_dirRestriction = 1; 
    /** 
    * variable $_dirRestriction 
    * Restrict the resource pointer to this directory and above. 
    * Change to 1 for nested directories 
    * @protected 
    * @var int 
    */ 
    protected $_recursive = 0; 

    /** 
    * variable $fontsdir 
    * This is to declare this variable as protected 
    * don\'t edit this!!! 
    * @protected 
    */ 
    protected $fontsdir; 
    /** 
    * variable $filename 
    * This is to declare this varable as protected 
    * don\'t edit this!!! 
    * @protected 
    */ 
    protected $filename; 

    /** 
    * function setFontFile() 
    * set the filename 
    * @public 
    * @param string $data the new value 
    * @return object reference to this 
    */ 
    public function setFontFile($data) 
    { 
        if ($this->_dirRestriction && preg_match(\'[\\.\\/|\\.\\.\\/]\', $data)) 
        { 
            $this->exitClass(\'Error: Directory restriction is enforced!\'); 
        } 

        $this->filename = $data; 
        return $this; 
    } // public function setFontFile 

    /** 
    * function setFontsDir() 
    * set the Font Directory 
    * @public 
    * @param string $data the new value 
    * @return object referrence to this 
    */ 
    public function setFontsDir($data) 
    { 
        if ($this->_dirRestriction && preg_match(\'[\\.\\/|\\.\\.\\/]\', $data)) 
        { 
            $this->exitClass(\'Error: Directory restriction is enforced!\'); 
        } 

        $this->fontsdir = $data; 
        return $this; 
    } // public function setFontsDir 

    /** 
    * function readFontsDir()  
    * @public 
    * @return information contained in the TTF \'name\' table of all fonts in a directory. 
    */ 
    public function readFontsDir() 
    { 
        if (empty($this->fontsdir)) { $this->exitClass(\'Error: Fonts Directory has not been set with setFontsDir().\'); } 
        if (empty($this->backupDir)){ $this->backupDir = $this->fontsdir; } 

        $this->array = array(); 
        $d = dir($this->fontsdir); 

        while (false !== ($e = $d->read())) 
        { 
            if($e != \'.\' && $e != \'..\') 
            { 
                $e = $this->fontsdir . $e; 
                if($this->_recursive && is_dir($e)) 
                { 
                    $this->setFontsDir($e); 
                    $this->array = array_merge($this->array, readFontsDir()); 
                } 
                else if ($this->is_ttf($e) === true) 
                { 
                    $this->setFontFile($e); 
                    $this->array[$e] = $this->getFontInfo(); 
                } 
            } 
        } 

        if (!empty($this->backupDir)){ $this->fontsdir = $this->backupDir; } 

        $d->close(); 
        return $this; 
    } // public function readFontsDir 

    /** 
    * function setProtectedVar() 
    * @public 
    * @param string $var the new variable 
    * @param string $data the new value 
    * @return object reference to this 

    * DISABLED, NO REAL USE YET 

    public function setProtectedVar($var, $data) 
    { 
        if ($var == \'filename\') 
        { 
            $this->setFontFile($data); 
        } else { 
            //if (isset($var) && !empty($data)) 
            $this->$var = $data; 
        } 
        return $this; 
    } 
    */ 
    /** 
    * function getFontInfo()  
    * @public 
    * @return information contained in the TTF \'name\' table. 
    */ 
    public function getFontInfo() 
    { 
        $fd = fopen ($this->filename, \"r\"); 
        $this->text = fread ($fd, filesize($this->filename)); 
        fclose ($fd); 

        $number_of_tables = hexdec($this->dec2ord($this->text[4]).$this->dec2ord($this->text[5])); 

        for ($i=0;$i<$number_of_tables;$i++) 
        { 
            $tag = $this->text[12+$i*16].$this->text[12+$i*16+1].$this->text[12+$i*16+2].$this->text[12+$i*16+3];

            if ($tag == \'name\') 
            { 
                $this->ntOffset = hexdec( 
                    $this->dec2ord($this->text[12+$i*16+8]).$this->dec2ord($this->text[12+$i*16+8+1]). 
                    $this->dec2ord($this->text[12+$i*16+8+2]).$this->dec2ord($this->text[12+$i*16+8+3])); 

                $offset_storage_dec = hexdec($this->dec2ord($this->text[$this->ntOffset+4]).$this->dec2ord($this->text[$this->ntOffset+5])); 
                $number_name_records_dec = hexdec($this->dec2ord($this->text[$this->ntOffset+2]).$this->dec2ord($this->text[$this->ntOffset+3])); 
            } 
        } 

        $storage_dec = $offset_storage_dec + $this->ntOffset; 
        $storage_hex = strtoupper(dechex($storage_dec)); 

        for ($j=0;$j<$number_name_records_dec;$j++) 
        { 
            $platform_id_dec    = hexdec($this->dec2ord($this->text[$this->ntOffset+6+$j*12+0]).$this->dec2ord($this->text[$this->ntOffset+6+$j*12+1])); 
            $name_id_dec        = hexdec($this->dec2ord($this->text[$this->ntOffset+6+$j*12+6]).$this->dec2ord($this->text[$this->ntOffset+6+$j*12+7])); 
            $string_length_dec    = hexdec($this->dec2ord($this->text[$this->ntOffset+6+$j*12+8]).$this->dec2ord($this->text[$this->ntOffset+6+$j*12+9])); 
            $string_offset_dec    = hexdec($this->dec2ord($this->text[$this->ntOffset+6+$j*12+10]).$this->dec2ord($this->text[$this->ntOffset+6+$j*12+11])); 

            if (!empty($name_id_dec) and empty($font_tags[$name_id_dec])) 
            { 
                for($l=0;$l<$string_length_dec;$l++) 
                { 
                    if (ord($this->text[$storage_dec+$string_offset_dec+$l]) == \'0\') { continue; } 
                    else { $font_tags[$name_id_dec] .= ($this->text[$storage_dec+$string_offset_dec+$l]); } 
                } 
            } 
        } 
        return $font_tags; 
    } // public function getFontInfo 

    /** 
    * function getCopyright()  
    * @public 
    * @return \'Copyright notice\' contained in the TTF \'name\' table at index 0 
    */ 
    public function getCopyright() 
    { 
        $this->info = $this->getFontInfo(); 
        return $this->info[0]; 
    } // public function getCopyright 

    /** 
    * function getFontFamily()  
    * @public 
    * @return \'Font Family name\' contained in the TTF \'name\' table at index 1 
    */ 
    public function getFontFamily() 
    { 
        $this->info = $this->getFontInfo(); 
        return $this->info[1]; 
    } // public function getFontFamily 

    /** 
    * function getFontSubFamily()  
    * @public 
    * @return \'Font Subfamily name\' contained in the TTF \'name\' table at index 2 
    */ 
    public function getFontSubFamily() 
    { 
        $this->info = $this->getFontInfo(); 
        return $this->info[2]; 
    } // public function getFontSubFamily 

    /** 
    * function getFontId()  
    * @public 
    * @return \'Unique font identifier\' contained in the TTF \'name\' table at index 3 
    */ 
    public function getFontId() 
    { 
        $this->info = $this->getFontInfo(); 
        return $this->info[3]; 
    } // public function getFontId 

    /** 
    * function getFullFontName()  
    * @public 
    * @return \'Full font name\' contained in the TTF \'name\' table at index 4 
    */ 
    public function getFullFontName() 
    { 
        $this->info = $this->getFontInfo(); 
        return $this->info[4]; 
    } // public function getFullFontName 

    /** 
    * function dec2ord() 
    * Used to lessen redundant calls to multiple functions. 
    * @protected 
    * @return object 
    */ 
    protected function dec2ord($dec) 
    { 
        return $this->dec2hex(ord($dec)); 
    } // protected function dec2ord 

    /** 
    * function dec2hex() 
    * private function to perform Hexadecimal to decimal with proper padding. 
    * @protected 
    * @return object 
    */ 
    protected function dec2hex($dec) 
    { 
        return str_repeat(\'0\', 2-strlen(($hex=strtoupper(dechex($dec))))) . $hex; 
    } // protected function dec2hex 

    /** 
    * function dec2hex() 
    * private function to perform Hexadecimal to decimal with proper padding. 
    * @protected 
    * @return object 
    */ 
    protected function exitClass($message) 
    { 
        echo $message; 
        exit; 
    } // protected function dec2hex 

    /** 
    * function dec2hex() 
    * private helper function to test in the file in question is a ttf. 
    * @protected 
    * @return object 
    */ 
    protected function is_ttf($file) 
    { 
        $ext = explode(\'.\', $file); 
        $ext = $ext[count($ext)-1]; 
        return preg_match(\"/ttf$/i\",$ext) ? true : false; 
    } // protected function is_ttf 
} // class ttfInfo 

function getFontInfo($resource) 
{ 
    $ttfInfo = new ttfInfo; 
    $ttfInfo->setFontFile($resource); 
    return $ttfInfo->getFontInfo(); 
} 
?>

class fontAttributes extends baseClass
{
    // --- ATTRIBUTES ---

    /**
     *  @access private
     *  @var string
     */
    private $_fileName          = NULL ;                    //  Name of the truetype font file


    /**
     *  @access private
     *  @var string
     */
    private $_copyright         = NULL ;                    //  Copyright


    /**
     *  @access private
     *  @var string
     */
    private $_fontFamily        = NULL ;                    //  Font Family


    /**
     *  @access private
     *  @var string
     */
    private $_fontSubFamily     = NULL ;                    //  Font SubFamily


    /**
     *  @access private
     *  @var string
     */
    private $_fontIdentifier    = NULL ;                    //  Font Unique Identifier


    /**
     *  @access private
     *  @var string
     */
    private $_fontName          = NULL ;                    //  Font Name


    /**
     *  @access private
     *  @var string
     */
    private $_fontVersion       = NULL ;                    //  Font Version


    /**
     *  @access private
     *  @var string
     */
    private $_postscriptName    = NULL ;                    //  Postscript Name


    /**
     *  @access private
     *  @var string
     */
    private $_trademark         = NULL ;                    //  Trademark



    // --- OPERATIONS ---

    private function _returnValue($inString)
    {
        if (ord($inString) == 0) {
            if (function_exists(\'mb_convert_encoding\')) {
                return mb_convert_encoding($inString,\"UTF-8\",\"UTF-16\");
            } else {
                return str_replace(chr(00),\'\',$inString);
            }
        } else {
            return $inString;
        }
    }   //  function _returnValue()

    /**
     *  @access public
     *  @return integer
     */
    public function getCopyright()
    {
        return $this->_returnValue($this->_copyright);
    }   //  function getCopyright()


    /**
     *  @access public
     *  @return integer
     */
    public function getFontFamily()
    {
        return $this->_returnValue($this->_fontFamily);
    }   //  function getFontFamily()


    /**
     *  @access public
     *  @return integer
     */
    public function getFontSubFamily()
    {
        return $this->_returnValue($this->_fontSubFamily);
    }   //  function getFontSubFamily()


    /**
     *  @access public
     *  @return integer
     */
    public function getFontIdentifier()
    {
        return $this->_returnValue($this->_fontIdentifier);
    }   //  function getFontIdentifier()


    /**
     *  @access public
     *  @return integer
     */
    public function getFontName()
    {
        return $this->_returnValue($this->_fontName);
    }   //  function getFontName()


    /**
     *  @access public
     *  @return integer
     */
    public function getFontVersion()
    {
        return $this->_returnValue($this->_fontVersion);
    }   //  function getFontVersion()


    /**
     *  @access public
     *  @return integer
     */
    public function getPostscriptName()
    {
        return $this->_returnValue($this->_postscriptName);
    }   //  function getPostscriptName()


    /**
     *  @access public
     *  @return integer
     */
    public function getTrademark()
    {
        return $this->_returnValue($this->_trademark);
    }   //  function getTrademark()


    /**
     *  Convert a big-endian word or longword value to an integer
     *
     *  @access private
     *  @return integer
     */
    private function _UConvert($bytesValue,$byteCount)
    {
        $retVal = 0;
        $bytesLength = strlen($bytesValue);
        for ($i=0; $i < $bytesLength; $i++) {
            $tmpVal = ord($bytesValue{$i});
            $t = pow(256,($byteCount-$i-1));
            $retVal += $tmpVal*$t;
        }

        return $retVal;
    }   //  function UConvert()


    /**
     *  Convert a big-endian word value to an integer
     *
     *  @access private
     *  @return integer
     */
    private function _USHORT($stringValue) {
        return $this->_UConvert($stringValue,2);
    }


    /**
     *  Convert a big-endian word value to an integer
     *
     *  @access private
     *  @return integer
     */
    private function _ULONG($stringValue) {
        return $this->_UConvert($stringValue,4);
    }


    /**
     *  Read the Font Attributes
     *
     *  @access private
     *  @return integer
     */
    private function readFontAttributes() {
        $fontHandle = fopen($this->_fileName, \"rb\");

        //  Read the file header
        $TT_OFFSET_TABLE = fread($fontHandle, 12);

        $uMajorVersion  = $this->_USHORT(substr($TT_OFFSET_TABLE,0,2));
        $uMinorVersion  = $this->_USHORT(substr($TT_OFFSET_TABLE,2,2));
        $uNumOfTables   = $this->_USHORT(substr($TT_OFFSET_TABLE,4,2));
//      $uSearchRange   = $this->_USHORT(substr($TT_OFFSET_TABLE,6,2));
//      $uEntrySelector = $this->_USHORT(substr($TT_OFFSET_TABLE,8,2));
//      $uRangeShift    = $this->_USHORT(substr($TT_OFFSET_TABLE,10,2));

        //  Check is this is a true type font and the version is 1.0
        if ($uMajorVersion != 1 || $uMinorVersion != 0) {
            fclose($fontHandle);
            throw new Exception($this->_fileName.\' is not a Truetype font file\') ;
        }

        //  Look for details of the name table
        $nameTableFound = false;
        for ($t=0; $t < $uNumOfTables; $t++) {
            $TT_TABLE_DIRECTORY = fread($fontHandle, 16);
            $szTag = substr($TT_TABLE_DIRECTORY,0,4);
            if (strtolower($szTag) == \'name\') {
//              $uCheckSum  = $this->_ULONG(substr($TT_TABLE_DIRECTORY,4,4));
                $uOffset    = $this->_ULONG(substr($TT_TABLE_DIRECTORY,8,4));
//              $uLength    = $this->_ULONG(substr($TT_TABLE_DIRECTORY,12,4));
                $nameTableFound = true;
                break;
            }
        }

        if (!$nameTableFound) {
            fclose($fontHandle);
            throw new Exception(\'Can\\\'t find name table in \'.$this->_fileName) ;
        }

        //  Set offset to the start of the name table
        fseek($fontHandle,$uOffset,SEEK_SET);

        $TT_NAME_TABLE_HEADER = fread($fontHandle, 6);

//      $uFSelector     = $this->_USHORT(substr($TT_NAME_TABLE_HEADER,0,2));
        $uNRCount       = $this->_USHORT(substr($TT_NAME_TABLE_HEADER,2,2));
        $uStorageOffset = $this->_USHORT(substr($TT_NAME_TABLE_HEADER,4,2));

        $attributeCount = 0;
        for ($a=0; $a < $uNRCount; $a++) {
            $TT_NAME_RECORD = fread($fontHandle, 12);

            $uNameID = $this->_USHORT(substr($TT_NAME_RECORD,6,2));
            if ($uNameID <= 7) {
//              $uPlatformID    = $this->_USHORT(substr($TT_NAME_RECORD,0,2));
                $uEncodingID    = $this->_USHORT(substr($TT_NAME_RECORD,2,2));
//              $uLanguageID    = $this->_USHORT(substr($TT_NAME_RECORD,4,2));
                $uStringLength  = $this->_USHORT(substr($TT_NAME_RECORD,8,2));
                $uStringOffset  = $this->_USHORT(substr($TT_NAME_RECORD,10,2));

                if ($uStringLength > 0) {
                    $nPos = ftell($fontHandle);
                    fseek($fontHandle,$uOffset + $uStringOffset + $uStorageOffset,SEEK_SET);
                    $testValue = fread($fontHandle, $uStringLength);

                    if (trim($testValue) > \'\') {
                        switch ($uNameID) {
                            case 0  : if ($this->_copyright == NULL) {
                                        $this->_copyright = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 1  : if ($this->_fontFamily == NULL) {
                                        $this->_fontFamily = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 2  : if ($this->_fontSubFamily == NULL) {
                                        $this->_fontSubFamily = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 3  : if ($this->_fontIdentifier == NULL) {
                                        $this->_fontIdentifier = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 4  : if ($this->_fontName == NULL) {
                                        $this->_fontName = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 5  : if ($this->_fontVersion == NULL) {
                                        $this->_fontVersion = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 6  : if ($this->_postscriptName == NULL) {
                                        $this->_postscriptName = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                            case 7  : if ($this->_trademark == NULL) {
                                        $this->_trademark = $testValue;
                                        $attributeCount++;
                                      }
                                      break;
                        }
                    }
                    fseek($fontHandle,$nPos,SEEK_SET);
                }
            }
            if ($attributeCount > 7) {
                break;
            }
        }

        fclose($fontHandle);
        return true;
    }




    /**
     *  @access constructor
     *  @return void
     */
    function __construct($fileName=\'\') {

        if ($fileName == \'\') {
            throw new Exception(\'Font File has not been specified\') ;
        }

        $this->_fileName = $fileName;

        if (!file_exists($this->_fileName)) {
            throw new Exception($this->_fileName.\' does not exist\') ;
        } elseif (!is_readable($this->_fileName)) {
            throw new Exception($this->_fileName.\' is not a readable file\') ;
        }

        return $this->readFontAttributes();
    }   //  function constructor()


}   /* end of class fontAttributes */