note 46408 deleted from language.types.float by aidan
| From: | aidan@php.net | Date: | Sun, 10 Oct 2004 07:52:28 +0000 |
| Subject: | note 46408 deleted from language.types.float by aidan | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-78264@lists.php.net to get a copy of this message | ||
Note Submitter: rSm
----
If you're used to shift numbers to left (or right), like
<?php
echo (double)(1 << ($n * 10));
?>
you'd better change it for something more secure, like
<?php
echo pow(2, $n * 10);
?>
'cause sometimes PHP seem to evaluate it using integer values ¬ ¬
PS It doesn't matter if $n is an integer or not, neither if you add as many
'(double)' casts in every position you could think of.