Adds a SEPA-QR Code for bank transfer payments (bacs) in the WooCommerce Thankyou page and Woocommerce emails. The QR-Code can be hooked into other pl …

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<p>Adds a SEPA-QR Code for bank transfer payments (bacs) in the WooCommerce Thankyou page and Woocommerce emails. The QR-Code can be hooked into other plugins.</p>
<h3>Before you start</h3>
<p>The plugin comes as is and free. However a real person has put real work into it. So if you use it please do s.th. good. Use your efforts, your time for beneficial projects or whatever!</p>
<h3>Prerequisite</h3>
<p>php GD2 extension must be installed as the QR-Code generator by <a href="https://github.com/fellwell5/bezahlcode/" rel="nofollow ugc">fellwell15</a> requires this.</p>
<h3>Hooking into other plugins</h3>
<p>I use a plugin for <a href="https://docs.wpovernight.com/home/woocommerce-pdf-invoices-packing-slips/pdf-template-action-hooks/" rel="nofollow ugc">PDF-invoices and packaging slips</a>.  Refer to this sample to hook the QR-Code into whatever you like:</p>
<pre><code>/wp-content/themes/Your(Child)Theme/functions.php


/* QR-Code in invoices */
add_action( 'wpo_wcpdf_after_order_details', 'wpo_wcpdf_qr_code', 10, 2 );
function wpo_wcpdf_qr_code ($document_type, $order) {
    require_once WP_PLUGIN_DIR . '/mxp-sepa-qr-code-addon-for-woocommerce/muxp-sepaqr.php';
    $muxp_order = wc_get_order( $order);
    $order_id  = $order->get_id();
    if ( !empty($muxp_order->get_total()) && (float)$order->get_total() > 0 ) {
        echo '<h1>QR-Code for your online banking app<h1>';
        echo '<img class="muxp-bacs-qrcode" src="' . esc_attr(muxp_get_qrcode($order->get_total(), $order_id)) . '" alt="qr-code"></p>';
    } 
}
</code></pre>
<h3>What happens in the backend:</h3>
<ul>
<li>the QR code generator creates the QR-code locally. There is <strong>no Google-API nor external server in use</strong>!</li>
<li>the QR code generator is from <a href="https://github.com/fellwell5/bezahlcode/" rel="nofollow ugc">fellwell15</a></li>
<li>plugin registers a get-parameter (configurable, default mxp_qr) for testing purposes and, if desired, to create links to the cached QR codes.</li>
<li>the prefix mxp is used throghout the plugin to avoid collisions with other plugins and functions. mxp stands for www.musicalexperten.de (musical experts). Remember where you’ve seen it first! 😉</li>
</ul>
<h3>Testing and troubleshooting</h3>
<h3>Simple way</h3>
<p>Install the plugin and order s.th. in your shop using BACS (direct bank transfer).</p>
<h3>To test if the QR-Code generator is working</h3>
<p>www.yourwebpage.de/?mxp_qr=something  = creates a real QR with dummyvalues 11-11<br />
<a href="https://www.musicalexperten.de/?mxp_qr=something" rel="nofollow ugc">Working example</a></p>
<h3>To find an existing cached QR-Code, query for a valid md5 string == If it does not exist in cache or transients, a sad smiley will appear.</h3>
<p>www.yourwebpage.de/?mxp_qr=351436ef4b279e1811a6c68a2dd58b1b<br />
results in a sad smiley. <a href="https://www.musicalexperten.de/?mxp_qr=351436ef4b279e1811a6c68a2dd58b1b" rel="nofollow ugc">Working example</a></p>
<h3>Remarks</h3>
<p>Storing the QR code in cache or transients is only needed if you want to use a link instead of a picture inside the email. Details in the program code.</p>
<h3>Support</h3>
<p>The program has been written by a professional programmer – however fully free of charge and without detailed knowledge about WooCommerce. I try to assist you in the support forum or on GitHub the best I can but my knowledge is limited.</p>
<h3>Full integration in Woocommerce</h3>
<p>I am more then happy if someone integrates the code into the Woocommerce core! The topic is discussed here: https://github.com/woocommerce/woocommerce/issues/27661</p>


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