int(1)
int(1)
#0  gen() called at [/home/kienthuc1/tool.kienthuclinux.info/services/custombuild/php/php-8.1.17/Zend/tests/generators/backtrace_multi_yield_from.php:10]
#1  from(Generator Object ())
#2  Generator->next() called at [/home/kienthuc1/tool.kienthuclinux.info/services/custombuild/php/php-8.1.17/Zend/tests/generators/backtrace_multi_yield_from.php:19]
int(2)