README

Library to render LaTeX formula into image

Requirements

Linux

• Install TexLive from https://tug.org/texlive/

Mac OS

• Install MacTex from https://tug.org/mactex/
• Install dvipng

$ sudo tlmgr update --self
$ sudo tlmgr install dvipng

Installation

Easiest way is to use composer

composer require jagermesh/latex-tools

Usage

<?php
  require_once(__DIR__ . '/vendor/autoload.php');

  // Or library directly
  // require_once('LatexTools.php');

  $latexTools = new \LatexTools\LatexTools();
  $latexTools->renderIntoResponse('(\frac{\beta }{\mu})^\beta {\Gamma(\beta )} \,  e^{-\frac{V\,\beta }{\mu }} \label{gamma}');

Will render this nice formula :)

Functions reference

Render formula and return image in response

$latexTools->renderIntoResponse($formula, $params = []);

Render image into file

$fileName = $latexTools->renderIntoFile($formula, $params = []);

In above calls $params could be any of these values:

• density - formula density
• fallbackToImage - if need to render regular image for incorrect formula (true by default)
• fallbackImageFontName - font name for regular image (fonts/PlayfairDisplay-Regular.ttf by default)
• fallbackImageFontSize - font size for regular image (16 by default)

Also these paramatares could be set globally. Please see below.

Set formula density (160 by default)

$latexTools->setDensity($value);

By default regular image will be rendered if formula incorrect (true by default)

$latexTools->setFallbackToImage(true|false);

Example

<?php
  require_once(__DIR__ . '/vendor/autoload.php');

  $latexTools = new \LatexTools\LatexTools();
  $latexTools->renderIntoResponse('x^2');

Font name for regular image (fonts/PlayfairDisplay-Regular.ttf by default)

$latexTools->setFallbackImageFontName($value);

Font size for regular image (16 by default)

$latexTools->setFallbackImageFontName($value);

Check if formula correct

$result = $latexTools->isValidLaTeX($formula);

Set directory for cache files (/tmp by default)

$latexTools->setCachePath($value);

Set directory for temp files (/tmp by default)

$latexTools->setTempPath($value);