Debugging method after sphsf-api call error

Debugging is a basic skill that developers must master. If an error occurs in calling the sphsf-api, use $ cl-> GetLastError (). Let's take a look at it.

When we use coreseek or sphek, if the function returns false when we call an api in a program, how can we debug it?
For example:

The Code is as follows:	Copy code
$ Res = $ cl-> Query ($ searchkey, 'myindex '); // Var_dump ($ res); die;

 
If a Qquery error occurs, $ res returns only false instead of the specific error message. In this case, we can use
GetLastError method to get the final error message !!

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Var_dump ($ cl-> GetLastError ());