Only Show Saturdays of the month

[xionhack]

Hello. I want to show all the saturdays of this month, I tried the following code but its not working, can somebody help me?

$dtFirstDay = date("j/n/Y", mktime(0, 0, 0, date("m") , date("d")-date("d")+1, date("Y")));

$dtLastDay = date("j/n/Y", mktime(0, 0, 0, date("m")+1 , date("d")-date("d"), date("Y"))); 

for($date = $dbFirstDay ; $date < $dtLastDay; $date = mktime(0,0,0,date("m", $date),date("d", $date)+1,date("Y", $date))){
    if(date('w' ,$date) == 0){
        echo $date;
    }

    }

[bradgrafelman]

I'd probably use [man]strtotime/man like so:

for($date = strtotime('first Saturday of this month'); date("m", $date) == date("m"); $date = strtotime('next Saturday', $date))
  echo date('j/n/Y', $date) . "\n";

[jkurrle]

Brad, can you explain your middle condition in your for() loop, please? I'm not following it...

[bradgrafelman]

It's basically checking that we didn't overflow into the next month (which is how we know we've found all Saturdays of the current month). All I'm doing is adding 7 days onto the previous date until I hit the next month, at which point the loop ends.

[jkurrle]

So, it's acting as a WHILE TRUE condition. Got it. Thanks!

[bradgrafelman]

jkurrle wrote:

So, it's acting as a WHILE TRUE condition.

Oh, well.. yeah. That's the basic syntax for a for() loop in any similar language (e.g. C++)...

for(initialization; loop condition; post-iteration operation)

The manual page for [man]for/man probably does a better job of explaining it.

EDIT: For example, you can translate any for() loop into a while loop, really...

initialization;

while(loop condition) {
    // your code here

post-iteration operation;
}

in pseudo-code.