Invoicr – Open Source PHP Invoice Generator (HTML, PDF, DOCX)

Invoicr is a free and open-source PHP invoice generator that is capable of churning out HTML, PDF, and DOCX invoices. It may not be the best in the world, but it is simple, fuss-free, and gives developers a quick boost with all the essentials built-in.

 

TABLE OF CONTENTS

Download & Notes How To Use Custom Template

 

 

DOWNLOAD & NOTES

First, here are the download links and a quick “setup guide” for the impatient folks who don’t have the patience to read through everything.

 

INSTALLATION & REQUIREMENTS

There is no “installation” involved, only a small hassle:

  • Open invlib/invoicr.php, change (C1) company information to your own.
  • That’s all – See example.php for a quick start.

Invoicr has not been extensively tested, but it is developed and works on a WAMP8 (Apache MySQL PHP 8) server.

 

LICENSE & DOWNLOAD

Invoicr is released under the MIT License. You are free to use it for your own personal and commercial projects, modify it as you see fit. On the condition that there the software is provided “as-is”. There are no warranties provided and “no strings attached”. Code Boxx and the authors are not liable for any claims, damages, or liabilities.

GitHub | SourceForge

 

 

THE INVOICE TEMPLATES

 

CREDITS & LIBRARIES USED

Invoicr is made possible with the following open source projects:

  • MPDF for adding the PDF capabilities.
  • PHPWord for the DOCX capability.

 

HOW TO USE

So far so good? Let us now go through a quick crash course on how to use Invoicr.

 

STEP 1) LOAD INVOICR LIBRARY

// (A) LOAD INVOICR
require "invlib/invoicr.php";

Start by including the invlib/invoicr.php library in your own project. This will automatically create a $invoicr object.

 

STEP 2) FEED INVOICE INFORMATION

// (B) SET INVOICE DATA
// (B1) COMPANY INFORMATION
/* RECOMMENDED TO JUST PERMANENTLY CODE INTO INVLIB/INVOICR.PHP > (C1)
$invoicr->set("company", [
  "http://localhost/code-boxx-logo.png",
  "D:/http/code-boxx-logo.png", 
  "Code Boxx", 
  "Street Address, City, State, Zip",
  "Phone: xxx-xxx-xxx | Fax: xxx-xxx-xxx",
  "https://code-boxx.com",
  "doge@code-boxx.com"
]); */

// (B2) INVOICE HEADER
$invoicr->set("head", [
  ["Invoice #", "CB-123-456"],
  ["DOP", "2011-11-11"],
  ["P.O. #", "CB-789-123"],
  ["Due Date", "2011-12-12"]
]);

// (B3) BILL TO
$invoicr->set("billto", [
  "Customer Name",
  "Street Address", 
  "City, State, Zip"
]);

// (B4) SHIP TO
$invoicr->set("shipto", [
  "Customer Name",
  "Street Address", 
  "City, State, Zip"
]);

// (B5) ITEMS - ADD ONE-BY-ONE
$items = [
  ["Rubber Hose", "5m long rubber hose", 3, "$5.50", "$16.50"],
  ["Rubber Duck", "Good bathtub companion", 8, "$4.20", "$33.60"],
  ["Rubber Band", "", 10, "$0.10", "$1.00"],
  ["Rubber Stamp", "", 3, "$12.30", "$36.90"],
  ["Rubber Shoe", "For slipping, not for running", 1, "$20.00", "$20.00"]
];
// foreach ($items as $i) { $invoicr->add("items", $i); }

// (B6) ITEMS - OR SET ALL AT ONCE
$invoicr->set("items", $items);

// (B7) TOTALS
$invoicr->set("totals", [
  ["SUB-TOTAL", "$108.00"],
  ["DISCOUNT 10%", "-$10.80"],
  ["GRAND TOTAL", "$97.20"]
]);

// (B8) NOTES, IF ANY
$invoicr->set("notes", [
  "Cheques should be made payable to Code Boxx",
  "Get a 10% off with the next purchase with discount code DOGE1234!"
]);

This is probably the most “complicated” step, you need to use $invoicr->set() or $invoicr->add() to feed Invoicr with information:

  • Company logo, name, address, contact.
  • Invoice information.
  • Bill to.
  • Ship to.
  • The items.
  • Totals.
  • Notes, if any.

 

 

STEP 3) CHOOSE A TEMPLATE & OUTPUT THE INVOICE

// (C) OUTPUT
// (C1) CHOOSE A TEMPLATE
$invoicr->template("apple");
// $invoicr->template("banana");
// $invoicr->template("blueberry");
// $invoicr->template("lime");
// $invoicr->template("simple");
// $invoicr->template("strawberry");

// (C2) OUTPUT IN HTML
// DEFAULT : DISPLAY IN BROWSER 
// 1 : DISPLAY IN BROWSER 
// 2 : FORCE DOWNLOAD 
// 3 : SAVE ON SERVER
$invoicr->outputHTML();
// $invoicr->outputHTML(1);
// $invoicr->outputHTML(2, "invoice.html");
// $invoicr->outputHTML(3, __DIR__ . DIRECTORY_SEPARATOR . "invoice.html");

// (C3) OUTPUT IN PDF
// DEFAULT : DISPLAY IN BROWSER 
// 1 : DISPLAY IN BROWSER 
// 2 : FORCE DOWNLOAD 
// 3 : SAVE ON SERVER
// $invoicr->outputPDF();
// $invoicr->outputPDF(1);
// $invoicr->outputPDF(2, "invoice.pdf");
// $invoicr->outputPDF(3, __DIR__ . DIRECTORY_SEPARATOR . "invoice.pdf");

// (C4) OUTPUT IN DOCX
// DEFAULT : FORCE DOWNLOAD
// 1 : FORCE DOWNLOAD 
// 2 : SAVE ON SERVER
// $invoicr->outputDOCX();
// $invoicr->outputDOCX(1, "invoice.docx");
// $invoicr->outputDOCX(2, __DIR__ . DIRECTORY_SEPARATOR . "invoice.docx");

Finally, choose a template to use and output the invoice.

 

 

CUSTOM TEMPLATE

Want to build your own customized theme? It is actually pretty easy to do so… If you are unsure at any point, feel free to use the “default” simple.php template files as a reference.

 

STEP 1) CREATE AN EMPTY PHP FILE

Start by creating a new PHP file in the respective template folder – invlib/DOCX, invlib/HTML, or invlib/PDF. For example, if we want to add a new “durian” template for HTML, we create invlib/HTML/durian.php.

 

STEP 2) BUILD THE TEMPLATE

2A) ACCESSING INVOICE INFORMATION

In the template file, we can access the various invoice information previously set with $invoicr->set() or $invoicr->add().

  • $this->company – Company logo, name, address, contact.
  • $this->head- Invoice information.
  • $this->billto – Bill to.
  • $this->shipto – Ship to.
  • $this->items – The items.
  • $this->totals – Totals.
  • $this->notes – Notes, if any.

 

2B) HTML TEMPLATES

To create an HTML template, simply put all the HTML code into $this->data. For example, we can access the items to create a list.

invlib/HTML/durian.php
$this->data = "<ul>";
foreach ($this->items as $i) {
  $this->data .= "<li>". $i[0] ."</li>";
}
$this->data .= "</ul>";

 

 

2C) PDF TEMPLATES

PDF generation is handled by MPDF, and it is capable of taking in HTML to generate PDF.

invlib/PDF/durian.php
$this->data = "<ul>";
foreach ($this->items as $i) { $this->data .= "<li>". $i[0] ."</li>"; }
$this->data .= "</ul>";
$mpdf->WriteHTML($this->data);

Check out the official MPDF documentation if you need more information.

 

2D) DOCX TEMPLATES

PHPWord handles the DOCX generation, and it is the “unfriendliest” to work with… Just read through the official PHPWord documentation for more information.

invlib/DOCX/durian.php
$section = $pw->addSection();
$table = $section->addTable($tableStyle);
foreach ($this->items as $i) {
  $table->addRow();
  $cell = $table->addCell(2000, $style);
  $cell->addText($i[0]);
}

3 thoughts on “Invoicr – Open Source PHP Invoice Generator (HTML, PDF, DOCX)”

  1. i only get the first letter/digit when i put an array of items in $items, what can i do to make this work?

    $items = $arrayofitems;

      1. Cool, nested array is indeed the “trick”

        I am very pleased with this invoice generator, great work

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