Update mxp-sepaqr.php for WordPress plugin repository

Coernel82 / SEPA-QR-for-Woocommerce

Plug-and-Play Plugin for Woocommerce

GNU General Public License v2.0

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Closed Coernel82 closed 2 years ago

Coernel82 commented 2 years ago

WordPress has some requirements to be fulfilled for a plugin to be published. The main issues were:

not using 3 letter prefixes for variables but 4 letters as there are so many plugins now that 3 letters may easily occur twice
escaping $variable with esc_attr() as a security measure