trim() with numbers with leading zeros, possible bug

[JustinK101]

Discovered something very strange with trim() and numbers with leading zeros.

 

<?php
$number = 0456;
echo trim($number);
?>

 

That ouputs 302. How the heck does 0456 trimmed turn into 302? Is this a bug?

[PFMaBiSmAd]

Leading zero's on numbers make them OCTAL.

 

Trim is a string function anyway. To get the correct results (for the example you posted), you would need to make your number into a string, either by enclosing it in quotes or casting it as a string. Edit: casting the number as a string doesn't work. Only enclosing it in quotes where you assigned it to the $number variable works.