Search results for: "callback"

What are the best practices for setting up and using callback functions in PHP?

When setting up and using callback functions in PHP, it is important to ensure that the callback function is properly defined and invoked in the corre...

How can Callback basics and OOP basics be combined to define flexible callbacks in PHP?

To define flexible callbacks in PHP using both Callback basics and OOP basics, you can create a class that accepts a callback function as a parameter...

Are there best practices for handling callback requests from payment gateways like Micropayment in PHP applications?

When handling callback requests from payment gateways like Micropayment in PHP applications, it is important to validate the incoming data to ensure i...

Is it advisable to use private static methods in PHP classes for callback functions needed for functions like preg_replace_callback?

When using callback functions like `preg_replace_callback` in PHP classes, it is advisable to use private static methods to encapsulate the callback l...

What is the significance of the error message "Array callback has to contain indices 0 and 1" in PHP?

The error message "Array callback has to contain indices 0 and 1" in PHP typically occurs when using array_map() with a callback function that does no...