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;
        }

        }

[litebearer]

Grrrrrr the 'sledge hammer' approach...

takes any date in the YYYY/MM/DD format and does some 'stuff'

 

<?PHP
#########################################
# function for getting 
#		the first day 
#		the last day
#		the number of days
#		in a given month - date must be in YYYY/MM/DD format
#########################################
function first_last_number_Of_Month($given_date) {
list($yr,$m,$dt) = split('/',$given_date); // separate year, month and date
	$first_day_of_month = $yr . "/" . $m . "/" . "01";
$first_day_ts = mktime( 0, 0, 0, $m, 1, $yr ); 
$last_day_of_month = $yr . "/" . $m . "/" . date("t",$first_day_ts); 
$number_of_days = date("t",$first_day_ts);
$first_last_array = array($first_day_of_month,$last_day_of_month,$number_of_days);
return $first_last_array;
} 

#########################################
# function for calculating 
#		the number of sundays, mondays, tuedays etc
#		there are in a given month
#		it uses the first_last_number_Of_Month function 
#
#		its returns the following array:
#				0 = date of first day format YYYY/MM/DD
#				1 = date of last day format YYYY/MM/DD
#				2 = number of days in the month
#				3 = number of sundays
#				4 = number of mondays
#				5 = number of tuesdays
#				6 = number of wednesdays
#				7 = number of thursdays
#				8 = number of fridays
#				9 = number of saturdays
#
#		in a given month - date must be in YYYY/MM/DD format
#########################################

function unique_weekdays_in_a_Month($given_date) {
$first_last_array = first_last_number_Of_Month($given_date);
$number_days = $first_last_array[2];
$i=0;
while($i<$number_days) {
	$date = date("D m d Y", (strtotime(date("Y/m/d", strtotime($first_last_array[0])) . " +$i day")));
	$week_day = date("D", (strtotime(date("Y/m/d", strtotime($first_last_array[0])) . " +$i day")));
	switch ($week_day){ 
		case "Sun": 
			$sundays = $sundays +1;
			break; 
		case "Mon": 
			$mondays = $mondays + 1; 
			break; 
		case "Tue": 
			$tuesdays = $tuesdays + 1; 
			break; 
		case "Wed": 
			$wednesdays = $wednesdays + 1; 
			break; 
		case "Thu": 
			$thursdays = $thursdays + 1; 
			break; 
		case "Fri": 
			$fridays = $fridays + 1; 
			break; 
		default: 
			$saturdays = $saturdays + 1; 
		break; 
	} 
$i++;
}
array_push ($first_last_array,$sundays,$mondays,$tuesdays,$wednesdays,$thursdays,$fridays,$saturdays); 

return $first_last_array;
}

###############################
#
#		END FUNCTIONS
#
#		BEGIN EXAMPLES
#
############################### 

$given_date = "2010/09/07";
$days_of_week_array = array ("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
echo "For the given date of " . $given_date . ".  We get the following: </p>";
$first_last_array = unique_weekdays_in_a_Month($given_date);
$x = 0;
while($x<7) {
$i=0;
while($i<$first_last_array[2]) {
	$next_day = (60*60*24) * $i; // increment seconds in a day
	$ts = strtotime($first_last_array[0]) + $next_day; // get timestamp for date
	$what_day = date('D', $ts);
	if($what_day == $days_of_week_array[$x]) {
		echo date('l jS \of F Y h:i:s A', $ts) . "<br>";
	}
	$i++;
}
echo "<hr>";
$x++;
}

$ts1 = strtotime($first_last_array[0]);
$new_date = date('l jS \of F Y h:i:s A', $ts1);
echo "First day is " . $first_last_array[0] . " - aka - " . $new_date . "</p>";
$ts1 = strtotime($first_last_array[1]);
$new_date = date('l jS \of F Y h:i:s A', $ts1);
echo "Last  day is " . $first_last_array[1]  . " - aka - " . $new_date . "</p>";
echo "There are  " . $first_last_array[2] . " days in the month.</p>";
echo "There are  " . $first_last_array[3] . " sundays in the month.</p>";
echo "There are  " . $first_last_array[4] . " mondays in the month.</p>";
echo "There are  " . $first_last_array[5] . " tuesdays in the month.</p>";
echo "There are  " . $first_last_array[6] . " wednesdays in the month.</p>";
echo "There are  " . $first_last_array[7] . " thursdays in the month.</p>";
echo "There are  " . $first_last_array[8] . " fridays in the month.</p>";
echo "There are  " . $first_last_array[9] . " saturdays in the month.</p>";

?>

 

example: http://nstoia.com/demo/demo_date_stuff01/

 

makes sense?

 

[kenrbnsn]

Here it is in general. Modify for your needs:

<?php
$month_start = strtotime('2010-05-01');
$month_end = strtotime('2010-05-31');
for($i=$month_start;$i<=$month_end;$i += 86400) {
   if (date('l',$i) == 'Saturday') {
       echo date('Y-m-d',$i) . "<br>\n";
   }
}
?>

 

Ken

[xionhack]

Thanks! how would u modify this and show all the saturdays and tuesdays of the month?! Thanks!

[ignace]

Inspired on kenrbnsn's code:

 

$saturday_start = strtotime('first Saturday of May 2010');
$saturday_end = strtotime('last Saturday of May 2010');

$plus7days = 604800; // 86400 * 7
for ($i = $saturday_start;
     $i <= $saturday_end;
     $i += $plus7days) {
    echo date('Y-m-d', $i);
}

$tuesday_start = strtotime('first Tuesday of May 2010');
$tuesday_end = strtotime('last Tuesday of May 2010');

for ($i = $tuesday_start;
     $i <= $tudesday_end;
     $i += $plus7days) {
    echo date('Y-m-d', $i);
}