Description:
------------
When trying to cast a numeric string value in the exponential notation to int, the 
result doesn't match with the initial value. While the casting to float from 
string works well. Also casting to int from the same value stored in a float 
variable workes well.
The function intval() has the same problem.

Test script:
---------------
<?php

echo 1E2 . "<br />";
echo (float)1E2 . "<br />";
echo (int)1E2 . "<br />";
echo intval(1E2) . "<br />";
echo (float)"1E2" . "<br />";
echo (int)"1E2" . "<br />";//problem
echo intval("1E2") . "<br />";//problem

?>

Expected result:
----------------
100
100
100
100
100
100
100

Actual result:
--------------
100
100
100
100
100
1
1