I am trying to overwrite the core AbstractPdf.php from




I did flush the cache after, but seems still using the core file, am I missing something? do I need to run some script to make this override works? I did search from any where over the internet, still not clear when I should do. Please help


  • 1
    you can't override any php file inside design folder. for that you need to creare di.xml file under module and then override it Dec 5, 2019 at 2:15
  • Do I need to run magento command to make it works, if I have the di.xml wrote up?
    – Paul Fan
    Dec 5, 2019 at 17:19
  • yes you need tu run di:compile command for that Dec 5, 2019 at 17:23

1 Answer 1


You can not override any php file in your theme. Required to create di.xml file in etc folder of your module.

Check answered how to override.

  • someone said it is protected function, so I cannot override, is that true? so create a custom model with di.xml can solve the problem?
    – Paul Fan
    Dec 11, 2019 at 23:33

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