[SOLVED] problem with strtotime

[proud]

 

I'm trying to subtract 2 days from the current date using strtotime, so this is the formula:

 

$valid_time=date('d/m/Y g:i a', strtotime('-2 days')) ;

 

but the problem comes when I try to assign the number of days to a variable:

 

i.e.

 

day_to_subtract=2;

 

$valid_time=date('d/m/Y g:i a', strtotime(' - ."day_to_subtract". days')) ;

 

when I try the code above I get this error:

 

Warning: date() [function.date]: Windows does not support dates prior to midnight (00:00:00), January 1, 1970 in D:\AppServ\www\user_exec9.php on line 24

 

 

So is there any idea how to solve this problem?

[redarrow]

<?php

$a=strtotime("now");

$b=strtotime("-1 day",$a);

$r=date("d-m-y g:i:a",$b);

echo $r;

?>

[Barand]

<?php
$day_to_subtract=2;

$valid_time=date('d/m/Y g:i a', strtotime("-$day_to_subtract days")) ;  // note double quotes

echo $valid_time;
?>

 

PS also note $ in front of variable names