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Edit File: dompdf.php

<?php

return array(

/*
  |--------------------------------------------------------------------------
  | Settings
  |--------------------------------------------------------------------------
  |
  | Set some default values. It is possible to add all defines that can be set
  | in dompdf_config.inc.php. You can also override the entire config file.
  |
  */
  'show_warnings' => false,   // Throw an Exception on warnings from dompdf

'public_path' => public_path(),  // Override the public path if needed

/*
  * Dejavu Sans font is missing glyphs for converted entities, turn it off if you need to show € and £.
  */
  'convert_entities' => true,

'options' => array(
    /**
     * The location of the DOMPDF font directory
     *
     * The location of the directory where DOMPDF will store fonts and font metrics
     * Note: This directory must exist and be writable by the webserver process.
     * *Please note the trailing slash.*
     *
     * Notes regarding fonts:
     * Additional .afm font metrics can be added by executing load_font.php from command line.
     *
     * Only the original "Base 14 fonts" are present on all pdf viewers. Additional fonts must
     * be embedded in the pdf file or the PDF may not display correctly. This can significantly
     * increase file size unless font subsetting is enabled. Before embedding a font please
     * review your rights under the font license.
     *
     * Any font specification in the source HTML is translated to the closest font available
     * in the font directory.
     *
     * The pdf standard "Base 14 fonts" are:
     * Courier, Courier-Bold, Courier-BoldOblique, Courier-Oblique,
     * Helvetica, Helvetica-Bold, Helvetica-BoldOblique, Helvetica-Oblique,
     * Times-Roman, Times-Bold, Times-BoldItalic, Times-Italic,
     * Symbol, ZapfDingbats.
     */
    "font_dir" => storage_path('fonts'), // advised by dompdf (https://github.com/dompdf/dompdf/pull/782)

/**
     * The location of the DOMPDF font cache directory
     *
     * This directory contains the cached font metrics for the fonts used by DOMPDF.
     * This directory can be the same as DOMPDF_FONT_DIR
     *
     * Note: This directory must exist and be writable by the webserver process.
     */
    "font_cache" => storage_path('fonts'),

/**
     * The location of a temporary directory.
     *
     * The directory specified must be writeable by the webserver process.
     * The temporary directory is required to download remote images and when
     * using the PFDLib back end.
     */
    "temp_dir" => sys_get_temp_dir(),

/**
     * ==== IMPORTANT ====
     *
     * dompdf's "chroot": Prevents dompdf from accessing system files or other
     * files on the webserver.  All local files opened by dompdf must be in a
     * subdirectory of this directory.  DO NOT set it to '/' since this could
     * allow an attacker to use dompdf to read any files on the server.  This
     * should be an absolute path.
     * This is only checked on command line call by dompdf.php, but not by
     * direct class use like:
     * $dompdf = new DOMPDF();  $dompdf->load_html($htmldata); $dompdf->render(); $pdfdata = $dompdf->output();
     */
    "chroot" => realpath(base_path()),

/**
     * Protocol whitelist
     *
     * Protocols and PHP wrappers allowed in URIs, and the validation rules
     * that determine if a resouce may be loaded. Full support is not guaranteed
     * for the protocols/wrappers specified
     * by this array.
     *
     * @var array
     */
    'allowed_protocols' => [
      "file://" => ["rules" => []],
      "http://" => ["rules" => []],
      "https://" => ["rules" => []]
    ],

/**
     * @var string
     */
    'log_output_file' => null,

/**
     * Whether to enable font subsetting or not.
     */
    "enable_font_subsetting" => false,

/**
     * The PDF rendering backend to use
     *
     * Valid settings are 'PDFLib', 'CPDF' (the bundled R&OS PDF class), 'GD' and
     * 'auto'. 'auto' will look for PDFLib and use it if found, or if not it will
     * fall back on CPDF. 'GD' renders PDFs to graphic files. {@link
     * Canvas_Factory} ultimately determines which rendering class to instantiate
     * based on this setting.
     *
     * Both PDFLib & CPDF rendering backends provide sufficient rendering
     * capabilities for dompdf, however additional features (e.g. object,
     * image and font support, etc.) differ between backends.  Please see
     * {@link PDFLib_Adapter} for more information on the PDFLib backend
     * and {@link CPDF_Adapter} and lib/class.pdf.php for more information
     * on CPDF. Also see the documentation for each backend at the links
     * below.
     *
     * The GD rendering backend is a little different than PDFLib and
     * CPDF. Several features of CPDF and PDFLib are not supported or do
     * not make any sense when creating image files.  For example,
     * multiple pages are not supported, nor are PDF 'objects'.  Have a
     * look at {@link GD_Adapter} for more information.  GD support is
     * experimental, so use it at your own risk.
     *
     * @link http://www.pdflib.com
     * @link http://www.ros.co.nz/pdf
     * @link http://www.php.net/image
     */
    "pdf_backend" => "CPDF",

/**
     * PDFlib license key
     *
     * If you are using a licensed, commercial version of PDFlib, specify
     * your license key here.  If you are using PDFlib-Lite or are evaluating
     * the commercial version of PDFlib, comment out this setting.
     *
     * @link http://www.pdflib.com
     *
     * If pdflib present in web server and auto or selected explicitely above,
     * a real license code must exist!
     */
    //"DOMPDF_PDFLIB_LICENSE" => "your license key here",

/**
     * html target media view which should be rendered into pdf.
     * List of types and parsing rules for future extensions:
     * http://www.w3.org/TR/REC-html40/types.html
     *   screen, tty, tv, projection, handheld, print, braille, aural, all
     * Note: aural is deprecated in CSS 2.1 because it is replaced by speech in CSS 3.
     * Note, even though the generated pdf file is intended for print output,
     * the desired content might be different (e.g. screen or projection view of html file).
     * Therefore allow specification of content here.
     */
    "default_media_type" => "screen",

/**
     * The default paper size.
     *
     * North America standard is "letter"; other countries generally "a4"
     *
     * @see CPDF_Adapter::PAPER_SIZES for valid sizes ('letter', 'legal', 'A4', etc.)
     */
    "default_paper_size" => "a4",

/**
     * The default paper orientation.
     *
     * The orientation of the page (portrait or landscape).
     *
     * @var string
     */
    'default_paper_orientation' => "portrait",

/**
     * The default font family
     *
     * Used if no suitable fonts can be found. This must exist in the font folder.
     * @var string
     */
    "default_font" => "serif",

/**
     * Image DPI setting
     *
     * This setting determines the default DPI setting for images and fonts.  The
     * DPI may be overridden for inline images by explictly setting the
     * image's width & height style attributes (i.e. if the image's native
     * width is 600 pixels and you specify the image's width as 72 points,
     * the image will have a DPI of 600 in the rendered PDF.  The DPI of
     * background images can not be overridden and is controlled entirely
     * via this parameter.
     *
     * For the purposes of DOMPDF, pixels per inch (PPI) = dots per inch (DPI).
     * If a size in html is given as px (or without unit as image size),
     * this tells the corresponding size in pt.
     * This adjusts the relative sizes to be similar to the rendering of the
     * html page in a reference browser.
     *
     * In pdf, always 1 pt = 1/72 inch
     *
     * Rendering resolution of various browsers in px per inch:
     * Windows Firefox and Internet Explorer:
     *   SystemControl->Display properties->FontResolution: Default:96, largefonts:120, custom:?
     * Linux Firefox:
     *   about:config *resolution: Default:96
     *   (xorg screen dimension in mm and Desktop font dpi settings are ignored)
     *
     * Take care about extra font/image zoom factor of browser.
     *
     * In images, <img> size in pixel attribute, img css style, are overriding
     * the real image dimension in px for rendering.
     *
     * @var int
     */
    "dpi" => 96,

/**
     * Enable inline PHP
     *
     * If this setting is set to true then DOMPDF will automatically evaluate
     * inline PHP contained within <script type="text/php"> ... </script> tags.
     *
     * Enabling this for documents you do not trust (e.g. arbitrary remote html
     * pages) is a security risk.  Set this option to false if you wish to process
     * untrusted documents.
     *
     * @var bool
     */
    "enable_php" => false,

/**
     * Enable inline Javascript
     *
     * If this setting is set to true then DOMPDF will automatically insert
     * JavaScript code contained within <script type="text/javascript"> ... </script> tags.
     *
     * @var bool
     */
    "enable_javascript" => true,

/**
     * Enable remote file access
     *
     * If this setting is set to true, DOMPDF will access remote sites for
     * images and CSS files as required.
     * This is required for part of test case www/test/image_variants.html through www/examples.php
     *
     * Attention!
     * This can be a security risk, in particular in combination with DOMPDF_ENABLE_PHP and
     * allowing remote access to dompdf.php or on allowing remote html code to be passed to
     * $dompdf = new DOMPDF(, $dompdf->load_html(...,
     * This allows anonymous users to download legally doubtful internet content which on
     * tracing back appears to being downloaded by your server, or allows malicious php code
     * in remote html pages to be executed by your server with your account privileges.
     *
     * @var bool
     */
    "enable_remote" => true,

/**
     * A ratio applied to the fonts height to be more like browsers' line height
     */
    "font_height_ratio" => 1.1,

/**
     * Use the HTML5 Lib parser
     *
     * @deprecated This feature is now always on in dompdf 2.x
     * @var bool
     */
    "enable_html5_parser" => true,
  ),

);