(PECL runkit:0.8-0.9)
runkit_return_value_used — Determines if the current functions return value will be used
Returns TRUE if the function's return value is used by the calling scope, otherwise FALSE
Example #1 runkit_return_value_used() example
<?phpfunction foo() { var_dump(runkit_return_value_used());}foo();$f = foo();?>
The above example will output:
bool(false) bool(true)