optimization for function call without paremters

Hi Dmitry, I found that INIT_FCALL doesn't use opline->result.var and DO_ICALL doesn't use op1 or op2. The original purpose of separating these two op was for sending parameters. However, if a function doesn't need parameters and it's an internal function, I think the operation could be merged into INIT_FCALL. So I guess we can do this below to reduce one bytecode for each function call without parameters: if (opline->extended_value == 0) { // call the function directly and store the value in the result. } Your thoughts? Best Regards, Yo-An Lin