Looping thru dates

[Tigress7]

Hello! First post YAY 😃
Anyway, I am creating a piece of code that displays the dates between two specified dates. e.g say between 1st Jan 03 and 5th Jan 03, I would like to display 1st Jan 03, 2nd Jan 03, 3rd Jan 03 etc tc. Therefore I'm using a loo for this, incrementing the date as I go along. However, unfortunatley my loop just doesn't seem to work and my screen comes back blank. Anything outside the for loop is fine eg echo $this $that and the $other 🆒 I was hoping someone wouldn't mind having a look through it and seeing if I have missed anythign vital or have any suggestions about it. I have been advised to use arrays for this, But I want to try it like this first, and figure the array bit out later.

<?php

$startday=28;
$startmonth=07;
$startyear=2003;
$endday=04;
$endmonth=07;
$endyear=2003;

$startdate=$startday.'-'.$startmonth.'-'.$startyear;
$enddate=$endday.'-'.$endmonth.'-'.$endyear;

$sdate= date("l F d Y m", mktime(0,0,0,$startmonth,$startday,$startyear));

$edate= date("l F d Y m", mktime(0,0,0,$endmonth,$endday,$endyear));

for($startday; $sdate<$edate; $startday++)
{
echo $sdate;
echo "hi";
}

?>

Thanks in advance!

[drawmack]

check out these functions
http://www.php.net/strtotime
http://www.php.net/date

[Tigress7]

Thx for replying however unfortunately I have trawled thru them already 🙁

[HalfaBee]

Startdate and enddate are define but never used.

Your loop is totally incorrect.
startday is not defined.
sdate and edate are strings that don't change.

This will either print an endless number of sdates and Hi or none at all.

I think your code should be more like this

$sdate= mktime(0,0,0,$startmonth,$startday,$startyear); 
$edate= mktime(0,0,0,$endmonth,$endday,$endyear); 

for($startday=$sdate; $startday<$edate; $startday+=60*60*24) 
{ 
    echo date('r',$startday).'<br>'; 
}

Not quite the format you want, but it at least does soemthing 🙂

HalfaBee

[Tigress7]

Hmm thanks for replying! i meant to delete $startdate and $enddate since they irrelevant and were meant to be useful later one. Anyway sorry you know you said $startday isn't defined but i put $startday=28; above, am i sposed to actually put this in the loop itself? . Plus $sdate and $edate do change inside, since $startday increases by 1 after each loop meaning $sdate as a whole should be changing! but doesn't 🙁. I use your code but it returns nothing, which is kinda weird...
Once again thanks for lookin at this!

[tekky]

your assignment of $sdate occurs outside of your for() loop, so no, it will never change, I would work with what Halfabee posted and make that work how you need it (looks like you only need to change the date() function to dispaly how you want...

[Tigress7]

Echo's Thursday January 01 1970

Which is kinda odd, as the code is now like this:

<?php
$startday=28;
$startmonth=07;
$startyear=2003;
$endday=29;
$endmonth=08;
$endyear=2003;

$sdate= date("l F d Y m", mktime(0,0,0,$startmonth,$startday,$startyear));

$edate= date("l F d Y m", mktime(0,0,0,$endmonth,$endday,$endyear));

for($startday=$sdate; $startday<$edate; $startday+=60*60*24)   

{  

    echo date("l F d Y",$startday).'<br>';  

}
?>

See i was trying to make it loop thru from 28th july 03 to 29th august 03 and i used halfabees code. Not quite sure where it got 1st jan 1970 from!

[tekky]

thats where the date() function starts from by default if invalid or no data is given to it

[Tigress7]

Oh! i wonder why it doesn't understand the dates i gave it.

[tekky]

on a coding note....

<?
$start = strtotime('28 july 2003');
$stop = strtotime('29 august 2003');
for($i=$start;$i<=$stop;$i+=86400)
{
     echo date("l F d Y m", $i). "<br>\n";
}
?>

that should work...

[crosbystillsnas]

because you are not giving timestamps to $sdate and $edate, but formated dates. format the timestamp with date() while looping and printing it, not at the beginning.

$sdate= date("l F d Y m", mktime(0,0,0,$startmonth,$startday,$startyear)); 
$edate= date("l F d Y m", mktime(0,0,0,$endmonth,$endday,$endyear)); 

should be

$sdate= mktime(0,0,0,$startmonth,$startday,$startyear); 
$edate= mktime(0,0,0,$endmonth,$endday,$endyear); 

[Tigress7]

wow damn! you did it with such ease tekky! thanks works perfect! does this funct strtotime check the date to make sure that they arent invalid

[Tigress7]

Crosbystillsnas thanks but even doing your way like so:

<?php 
$startday=28; 
$startmonth=07; 
$startyear=2003; 
$endday=29; 
$endmonth=08; 
$endyear=2003; 

$sdate= mktime(0,0,0,$startmonth,$startday,$startyear); 

$edate= mktime(0,0,0,$endmonth,$endday,$endyear); 

for($startday=$sdate; $startday<$edate; $startday+=60*60*24)    

{   

    echo date("l F d Y",$startday).'<br>';   

} 
?>

Produces nutting

[Tigress7]

I know it sounds silly cuz tekky has a perfectly working one, but I'd love to know why the mktime way doesn't work... if anyone has any ideas. More a case of curiosity and learning than anythign else though 😃

[tekky]

strtotime() <- explains it...

just check for -1, which strtotime() returns on a failed conversion

[Tigress7]

thanks
i see why u used that funct now. but i figured mktime worked in a pretty similar way validating dates, meaning i should be able to use it for the same thing or am i totally off track here?

[crosbystillsnas]

hmmm... the problem must be the month.

it works if you do not start with a zero... e.g. for august try: 8, not 08.

i didnt know that before.

[Tigress7]

Also works if you put single quotes around it like
$startmonth='07'; cuz then it seems to realise you gotta treat it as a whole and not get stuck, strange though.

[HalfaBee]

It works in quotes because 08 is not a valid octal number and in quotes php converts it to decimal.

08 not valid octal number
'08' is converted to decimal 8

HalfaBee

[Tigress7]

thanks , sure didn't know that!