What is WordPress Hook: is_email
The is_email hook in WordPress is a filter hook that is used to validate an email address. It allows developers to modify the email validation process and customize it according to their specific needs.
Understanding the Hook: is_email
The is_email hook is located within the email validation process in WordPress. It is called when the is_email() function is used to validate an email address. Developers can use this hook to modify the default email validation behavior and add custom validation rules.
Hook Parameters (if applicable): is_email
The is_email hook does not accept any parameters. It is a simple filter hook that allows developers to modify the result of the email validation process.
Hook Doesn’t Work: is_email
If the is_email hook doesn’t work as expected, it could be due to incorrect usage or conflicts with other plugins or themes. Developers should ensure that the hook is properly added and that there are no conflicts with other code that may affect the email validation process.
Best Practices & Usage Notes (if applicable): is_email
When using the is_email hook, developers should be mindful of the impact of their custom validation rules on the overall email validation process. It is important to thoroughly test any custom rules to ensure that they do not interfere with the default behavior of the is_email() function.
is_email Usage Example: is_email
“`php
function custom_email_validation( $is_email, $email ) {
// Add custom email validation rules here
if ( /* custom validation condition */ ) {
return false; // Invalid email
} else {
return $is_email; // Default validation result
}
}
add_filter( ‘is_email’, ‘custom_email_validation’, 10, 2 );
“`
