Re: Merging Strings

Rolf van de Krol wrote:

Hi all, why do result the following two examples in two different value for $month? (1)

$current_date = getdate(time());

$month        = strval($current_date['year']);
$month       .= (strlen(strval($current_date['mon'])) == 2)
              ? $current_date['mon']	
              : ("0".$current_date['mon']);

$current_date = getdate(time());

$month        = strval($current_date['year']) . (strlen(strval($current_date['mon'])) == 2)                  ? $current_date['mon']
              : ("0".$current_date['mon']);

in the second version: strval($current_date['year']) . (strlen(strval($current_date['mon'])) == 2) is equal to TRUE, therefore $current_date['mon'] is returned, you are missing parentheses around the tertiary expression (?:).... so: $current_date = getdate(time());

$month        = strval($current_date['year']) .
	      ((strlen(strval($current_date['mon'])) == 2) ? $current_date['mon'] : "0".$current_date['mon']);

btw, have a look at str_pad: $current_date = getdate();

$month        = str_pad($current_date['mon'], 2, "0", STR_PAD_LEFT);

echo $month;

The first example sets $month to 200505 and the second sets it to 5. Why is that. In my opinion they both should set it to 200505. Is this a weird bug, or did i something wrong? I'm using PHP 4.3.10 with Apache 1.3.33 on W2K Pro, but the server of my hosting provider does the same (php 4.3.10 + apache (don't know the version, i guess 1.3.33) on linux (i'm not sure, but i thought it was redhat)). Rolf van de Krol