Used to validate the format an API key entered by a user
||The key whose formatting you wish to check
The function takes one parameter: $key
, which is the API key entered by the user to validate.
The function initializes an empty string called $msg
, which will store a message to return to the user based on the validation result.
is empty, the function sets $msg
to a message encouraging the user to enter their API key to enable certain features.
is not empty, the function uses two regular expressions to validate the format of the key. The regular expressions check that the key is a string of 5 alphanumeric characters, followed by a hyphen, and repeated 5 times for a total of 25 or 24 characters. If the key does not match either of these patterns, the function sets $msg
to an error message indicating that the key is not valid.
matches one of the valid patterns, the function sets $msg
to a success message indicating that the key is valid.
Finally, the function returns the message stored in $msg
Overall, this function provides a simple way to validate an API key entered by a user, and can be used to provide feedback to the user about the validity of their input.