Understanding the Error: What Does It Mean?

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Doctrine ORM uses data types to map PHP objects to database columns. These types help Doctrine correctly transform data between its database representation (e.g., VARCHAR, INT) and PHP objects (e.g., string, DateTime).

When you see the error:

“Could not convert database value to Doctrine type phone_number”

it means Doctrine tried to handle a column tunisia mobile phone number list defined with the custom type phone_number but could not find or properly convert this type. This can happen because:

The phone_number type is not registered in Doctrine’s type system.

The custom type class is missing or incorrectly implemented.

There is a mismatch between the database column data and the expected PHP type.

Doctrine is unaware of how to convert the raw database value into the phone_number PHP object (or vice versa).

Why Use a Custom Doctrine Type for Phone Numbers?
Phone numbers are more complex than simple strings. They may require validation, formatting, and standardized storage. Using a custom Doctrine type for phone numbers can help by:

Enforcing validation at the database interaction layer.

Automatically formatting phone numbers when reading/writing.

Encapsulating phone number logic within an object rather than raw strings.

However, using custom types requires proper registration and implementation to avoid conversion errors.

How to Fix “Could Not Convert Database Value to Doctrine Type Phone_Number”
1. Register the Custom Doctrine Type
Doctrine must know about your custom phone_number type. You typically register it in your bootstrap or Doctrine configuration code: