Contents
Solution VIII
File sol_VIII_a.php is the file to be opened in the browser,
it includes itself:
<![CDATA[
<?
require_once( "sol_VIII_b.php" );
print f()." ";
include( basename($_SERVER['PHP_SELF']) );
?>
]]>
File sol_VIII_b.php is required once of define the function f():
<![CDATA[
<?
function f() {
$students = array("fred","john","jim","mary");
return $students [array_rand($students,1)];
}
?>
]]>
This construct avoids the allocation of memory
(for some variable) when sol_VIII_a.php is included.
Otherwise the recursive include operation would cause
a memory overflow.