Undefined Index / Variable Error

This type of error occurs when you are referencing a variable that has not been declared. Set the variable or use isset() in the programming to know if the variable has been set will fix the issue or no.

Error Variant:
  • PHP Notice: Undefined index: company in /path/public_html/catalog/model/account/customer.php on line 8
  • PHP Notice: Undefined variable: order_id in /path/public_html/catalog/controller/account/order.php on line 149
  • PHP Notice: Undefined variable: product in /path/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_product_product.tpl on line 272
Solution
  • If you are receiving this issue with clean OpenCart installation, try to share the bugs on OpenCart forum. It will help the developers easily fix the bug.
  • After installing an extension, if you get the same issue, then disable the extension and report it to the developer.
  • If the error refers to file inside the “/vqmod/vqcache” folder, it means the error caused by vQmod file. Disable the vQmod file by renaming it to vqmod_file.xml_ and report the bugs to your OpenCart developer.


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