(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
<?php
function foo() {
var_dump(runkit_return_value_used());
}
foo();
$f = foo();
?>
The above example will output:
bool(false)
bool(true)