"mPDF font-family name" - the name used internally to process fonts. This could be anything you like, but by default mPDF will convert CSS font-family names by removing any spaces and changing to lowercase. Reading the name above, mPDF will look for a "mPDF font-family name" of 'trebuchetms'. The configurable values referred to below are set in the config_fonts.php file When parsing HTML/CSS, mPDF will read the CSS font-family name (e.g. 'Trebuchet MS') and convert by removing any spaces and changing to lowercase, to look for a mPDF font-family name (trebuchetms). Next it will look for a translation (if set) e.g.: $this->fonttrans = array( 'trebuchetms' => 'trebuchet' ) Now the mPDF font-family name to be used is 'trebuchet' If you wish to make this font available, you need to specify the Truetype .ttf font files for each variant. These should be defined in the array: $this->fontdata = array( "trebuchet" => array( 'R' => "trebuc.ttf", 'B' => "trebucbd.ttf", 'I' => "trebucit.ttf", 'BI' => "trebucbi.ttf", ) ) This is the array which determines whether a font is available to mPDF. Each font-family must have a Regular ['R'] file defined - the others (bold, italic, bold-italic) are optional. mPDF will try to load the font-file. If you have defined _MPDF_SYSTEM_TTFONTS at the top of the config_fonts.php file, it will first look for the font-file there. This is useful if you are running mPDF on a computer which already has a folder with TTF fonts in (e.g. on Windows) If the font-file is not there, or _MPDF_SYSTEM_TTFONTS is not defined, mPDF will look in the folder /[your_path_to_mpdf]/ttfonts/ Note that the font-file names are case-sensitive and can contain capitals. If the folder /ttfontdata/ is writeable (CHMOD 644 or 755), mPDF will save files there which it can re-use next time it accesses a particular font. This will significantly improve processing time and is strongly recommended. mPDF should be able to read most TrueType Unicode font files with a .ttf extension Truetype fonts with .ttf extension that are OpenType also work OK. TrueType collections (.ttc) will also work if they contain TrueType Unicode fonts. Character substitution ---------------------- Most people will have access to a Pan-Unicode font with most Unicode characters in it such as Arial Unicode MS. Set $this->backupSubsFont = array('arialunicodems'); at the top of the config_fonts.php file to use this font when substituting any characters not found in the specific font being used. Example: You can set $mpdf->useSubstitutions = true; at runtime or $this->useSubstitutions = true; in the config.php file
This text contains a Thai character ม which does not exist in the Comic Sans MS font file
When useSubstitutions is true, mPDF will try to find substitutions for any missing characters: 1) firstly looks if the character is available in the inbuilt Symbols or ZapfDingbats fonts; 2) [If defined] looks in each of the the font(s) set by $this->backupSubsFont array NB There is an increase in processing time when using substitutions, and even more so if a backupSubsFont is defined. Controlling mPDF mode ===================== The first parameter of new mPDF('') works as follows: new mPDF('c') - forces mPDF to only use the built-in [c]ore Adobe fonts (Helvetica, Times etc) new mPDF('') - default - font subsetting behaviour is determined by the configurable variables $this->maxTTFFilesize and $this->percentSubset (see below) Default values are set so that: 1) very large font files are always subset 2) Fonts are embedded as subsets if < 30% of the characters are used new mPDF('..-x') - used together with a language or language/country code, this will cause mPDF to use only in-built core fonts (Helvetica, Times) if the language specified is appropiate; otherwise it will force subsetting (equivalent to using "") e.g. new mPDF('de-x') or new mPDF('pt-BR-x') will use in-built core fonts and new mPDF('ru-x') will use subsets of any available TrueType fonts The languages that use core fonts are defined in config_cp.php (using the value $coreSuitable). new mPDF('..+aCJK') new mPDF('+aCJK') new mPDF('..-aCJK') new mPDF('-aCJK') - used optionally together with a language or language/country code, +aCJK will force mPDF to use the Adobe non-embedded CJK fonts when a passage is marked with e.g. "lang: ja" This can be used at runtime to override the value set for $mpdf->useAdobeCJK in config.php Use in conjunction with settings in config_cp.php For backwards compatibility, new mPDF('-s') and new mPDF('s') will force subsetting by setting $this->percentSubset=100 (see below) new mPDF('utf-8-s') and new mPDF('ar-s') are also recognised Language/Country (ll-cc) ------------------------ You can use a language code ('en') or language/country code ('en-GB') to control which mode/fonts are used. The behaviour is set up in config_cp.php file. The default settings show some of the things you can do: new mPDF('de') - as German is a Western European langauge, it is suitable to use the Adobe core fonts. Using 'de' alone will do nothing, but if you use ('de-x'), this will use core fonts. new mPDF('th') - many fonts do not contain the characters necessary for Thai script. The value $unifonts defines a restricted list of fonts available for mPDF to use. NB or are supported. Configuration variables changed =============================== Configuration variables are documented in the on-line manual (http://mpdf1.com/manual/). Font folders ============ If you wish to define your own font file folders (perhaps to share), you can define the 2 constants in your script before including the mpdf.php script e.g.: define('_MPDF_TTFONTPATH','your_path/ttfonts/'); define('_MPDF_TTFONTDATAPATH','your_path/ttfontdata/'); // should be writeable