#php srsly?

[ernestly-blog]

PHP, modulus and floating point numbers (srsly?)

On a nice sunny and quite warm september afternoon I decided I'll do the unspeakable and try to calculate the modulus of a float value. This is easy as pie, so I wrote

[sanchez] ~$ php -r "echo 0.1 % 1;"

What I expected was of course:

0.1

What I got was:

0

PHP, seriously? You're implicitly assuming integers, thus casting the numbers to integer and spit out just a simple and plain 0? PHP, we spent a very long time together and I mostly enjoyed it but I think you have to leave soon...

If you want the expected behaviour one has to use 'fmod':

[sanchez] ~$ php -r "echo fmod(0.1,1);"

In addition I asked my self: WWJSD (what would JavaScript do):

[sanchez] ~$ node > 0.1 % 1 0.1

WWPYD (what would Python do):

[sanchez] ~$ python Python 2.7.3 (default, Aug 1 2012, 05:14:39) >>> 0.1 % 1 0.1

So once again: PHP, srsly?

[ernestly-blog]

PHP DateTime format and DateInterval format

I will never understand the inconsistency in PHP's API.

Why do I have to use the percent when formatting the output of a DateInterval object, but I don't have to use the percent when formatting the output of a DateTime object!

$dt = new DateTime();  $di = new DateInterval( "PT1H" ); echo $dt->format( '%H:%i:%s' ); echo $di->format( 'H:i:s' );

For the future I really like to stick more to node.js as JavaScript Style of doing things is far more pleasant and convenient...