Another PHP interview question

This question comes from Brothers Cloud Classroom.
Write the running results: u Function MyFunc ($ argument) {

echo $ argunment + 10;

}

$ variable = 10;

echo "myfunc ($ variable) =". ;

Answer: 1. echo “myfunc($variable)=".myfunc($variable); How will this sentence be executed? ?
The latter part "myfunc($variable);" will be executed first and then echo, so the answer is at least
20myfunc($variable)=. 20 is the execution result of myfunc($variable);. 2. How will echo "myfunc($variable)=". be parsed? Variables enclosed in double quotes will be executed, but functions will not be executed. So equal to:
myfunc(10)=.
So, the answer is at least
20myfunc(10)= . But look carefully, function myfunc($argument){

                                                                                                                                                     echo $argunment + 10; Therefore, $argunment will not be printed in this function.

The final correct local answer is:

10myfunc(10)=

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