Can you look over this validation?

[Teach]

Hi guys, hope you're okay.

I have just implemented a new system, and hoped you can double check some validation for me.

Basically, the dates below are stored as yyyy-mm-dd, and I want to:

That stageend is not before stagestart
Stageend is not before r2 or r1
r2 is not before r1
And none of the above below stagestart (must be the first date)
Also, it would be great to check that none of the dates are in the past, but allow today

Any idea how I can achieve the above? So far I've got the following. I tried the one about checking not in the past, but it always disallowed today's date which it needs to allow 🙁

Any help appreciated, thank you.

      $stagestart = strtotime($_POST['stagestart']);
      $r1 = strtotime($_POST['r1']);
      $r2 = strtotime($_POST['r2']);
      $stageend = strtotime($_POST['stageend']);
      if ($r1>=$r2)
      {
          $write=0;
          $msg .= "<li><span>The r 2 cannot be before r 1</span></li>\n";
      }
      if ($stagestart>=$stageend)
      {
          $write=0;
          $msg .= "<li><span>The stage end cannot be less than stage start</span></li>\n";
      }

[Teach]

Oh, and I've I've got one called "$_POST['joined']", can I also do one more validation event to check that stagestart is not before that joined date? 😃

[Teach]

I've just added this code, a scanning eye would be great to tell me if I've done it correctly 🙂

The only one I have no idea on now is:
-r2 is not before r1
-And none of the above before stagestart (must be the first date)

Any help on those appreciated

Current code:

      if (empty($_POST['stagestart'])) { 
          $write=0; 
          $msg .= "<li><span>The stage start cannot be blank</span></li>\n"; 
      } 
      if (empty($_POST['r1'])) { 
          $write=0; 
          $msg .= "<li><span>The r 1 date cannot be blank</span></li>\n"; 
      } 
      if (empty($_POST['r2'])) { 
          $write=0; 
          $msg .= "<li><span>The r 2 date cannot be blank</span></li>\n"; 
      } 
      if (empty($_POST['stageend'])) { 
          $write=0; 
          $msg .= "<li><span>The stage end cannot be blank</span></li>\n"; 
      } 

  $joinedq=mysql_fetch_array(mysql_query("Select * from user where account='".mysql_real_escape_string(htmlentities($_POST['account']))."'")); 
  $joineddate = strtotime($joinedq['joined']); 
  $stagestart = strtotime($_POST['stagestart']); 
  $r1 = strtotime($_POST['r1']); 
  $r2 = strtotime($_POST['r2']); 
  $stageend = strtotime($_POST['stageend']); 

  if ($joineddate>$stagestart || $joineddate>$r1 || $joineddate>$r2 || $joineddate>$end) 
  { 
      $write=0; 
      $msg .= "<li><span>The provided dates cannot be before their Joined date</span></li>\n"; 
  } 
  if ($r1>$r2) 
  { 
      $write=0; 
      $msg .= "<li><span>The r 2 cannot be before r 1</span></li>\n"; 
  } 
  if ($stagestart>$stageend) 
  { 
      $write=0; 
      $msg .= "<li><span>The stage end cannot be less than stage start</span></li>\n"; 
  } 

For my other one, I have 'joined' stored as yyyy-mm-dd, so I check that with:

         if (empty($_POST['stagestart'])) { 
              $write=0; 
              $msg .= "<li><span>The stage start cannot be blank</span></li>\n"; 
          } 

      $joineddate = strtotime('now'); 
      $stagestart = strtotime($_POST['stagestart']); 

      if ($joineddate>$stagestart) 
      { 
          $write=0; 
          $msg .= "<li><span>The stage start cannot be before their Joined date (today)</span></li>\n"; 
      } 

Thank you 🙂