ReflectionFunction::__construct

<?php
/**
 * A simple counter
 *
 * @return int
 */
function counter1()
{
 static $c = 0;
 return ++$c;
}
/**
 * Another simple counter
 *
 * @return int
 */
$counter2 = function()
{
 static $d = 0;
 return ++$d;
};
function dumpReflectionFunction($func)
{
 // Print out basic information
 printf(
 "\n\n===> The %s function '%s'\n".
 " declared in %s\n".
 " lines %d to %d\n",
 $func->isInternal() ? 'internal' : 'user-defined',
 $func->getName(),
 $func->getFileName(),
 $func->getStartLine(),
 $func->getEndline()
 );
 // Print documentation comment
 printf("---> Documentation:\n %s\n", var_export($func->getDocComment(), true));
 // Print static variables if existent
 if ($statics = $func->getStaticVariables())
 {
 printf("---> Static variables: %s\n", var_export($statics, true));
 }
}
// Create an instance of the ReflectionFunction class
dumpReflectionFunction(new ReflectionFunction('counter1'));
dumpReflectionFunction(new ReflectionFunction($counter2));
?>

===> The user-defined function 'counter1'
 declared in Z:\reflectcounter.php
 lines 7 to 11
---> Documentation:
 '/**
 * A simple counter
 *
 * @return int
 */'
---> Static variables: array (
 'c' => 0,
)
===> The user-defined function '{closure}'
 declared in Z:\reflectcounter.php
 lines 18 to 23
---> Documentation:
 '/**
 * Another simple counter
 *
 * @return int
 */'
---> Static variables: array (
 'd' => 0,
)