Description:
------------
F:\>php -v
PHP 5.0.3 (cli) (built: Dec 15 2004 08:07:57)

Infinite recursion is predictably terminated, but the Zend Engine produces no output to that effect (at least in CLI). At least a E_WARNING should be emitted to warn developers that this is really what happened (as it might not be clear).

Reproduce code:
---------------
<?php
/* php/bugs/recursive.php5
 * Infinite recursion protection needs error
 */

$i = 0;
function iWillRecurse() {
  global $i;
  printf("Recursions: %7s\n", number_format(++$i));
  iWillRecurse();
}

iWillRecurse();

Expected result:
----------------
F:\>php -f php\bugs\recursive.php5
..
Recursions:   6,283
Recursions:   6,284
Warning: Infinite recursion in F:\php\bugs\recursive.php5 on line 10

F:\>

Actual result:
--------------
F:\>php -f php\bugs\recursive.php5
..
Recursions:   6,283
Recursions:   6,284

F:\>