[Fitting an HTML conditional comment inside a php code. Is not working for me]

<?php

  if (preg_match('/MSIE/i',$_SERVER['HTTP_USER_AGENT'])) $h4 = '<h4>You use IE? LOL U SUCK!</h4>';
    else $h4 = '<h4>Good for you</h4>';

  echo $h4;

?>

[How do you deal with blank dates?]

Why not keep ANY data from submitting, unless the user inputs a valid date? Maybe I just need to know a little bit more about what you're trying to do....

[Error running MySQL Query]

That isn't the complete line in 111 right?

[Post Form Values to 2 Different External Sites]

I'm sure you can do this with cURL.

[PHP-putting a button inside if scope]

You really don't want to do it in 100 different PHP pages. Instead, use methods (See OOP) or functions...all within a single PHP page. That being said, it's possible to display anything you want on a conditional basis. What you're asking is basically the basics of if/else 101.

 

Something like....

 

<?php

function loadpage($var) {
// Your code here
}

    if($_SESSION['loggedin']) loadpage('members');
      else loadpage('login');

?>

 

There's of course different approaches, techniques...etc. But yes, more than possible.

[so a weird situation with my shopping cart]

Can you show us the code where you're setting the session variable in question? Thanks.

[so a weird situation with my shopping cart]

The sessions should not be destroyed, unless the browser is being closed, or you probably can't print out the values if you're not initiating the session again in the script/page they are coming back to. If you aren't, then the session variables won't be recognized.

 

session_start()

[multilple attachments with one request]

You can't do it all on the same page. Not using that approach, no. Why not just create a downloadable zip/archive of the files they want and have it as a single download?

[FTP upload time]

Javascript is your friend.

[User Gallery]

You can always do something like...

<?php

$img_name = md5(time()).$extension;

?>

 

Not very likely you'll have duplicates unless, the time/date on the server is changed.

 

Edit: I assume you're going to store/log the fact they uploaded an image in your db. So yeah, you store the image name and in the same table, the user id associated with it.

[Upgrading Applications]

http://subversion.tigris.org/

 

Word to ya mutha, yo.

[[SOLVED] "IF" statement with negative numbers]

So it becomes an issue when your number is negative or less than zero?

 

If I understood you right, try this...

<?php

//Do this check before your other conditional statements...
if($number < 0) $number = 0;

if($variable > $number) {
  //Do the dew man.
}

?>

[bad thumbnail quality]

Try using 1-9 (1 through 9) when setting the image quality. It's been a while since I had to use image functions but if I remember, this is different when using ImageCopyResampled() (Which let's you set quality by %).

[sending messages to inboxes]

User accounts with a messages table linked to their id, stored in a MYSQL database would be one approach.

[[SOLVED] need help with source gardian]

Does your host support dynamic loading? If so, Source Guardian provides the files on their site.

[bad thumbnail quality]

<?php

ImageJpeg($ni,$dstFile, $quality);

?>

 

http://us.php.net/manual/en/function.imagejpeg.php

[[SOLVED] Checking the format of a date]

Well, your question wasn't very specific. What exactly are you checking? User input? A record stored in a database? A string?

 

 

Anyway...assuming it's a string or something manually entered in a form (Bad idea to let people enter dates without forcing the format yourself)....

 

<?php

if(!preg_match('/[0-3][0-9]\/[0-1][0-9]\/2[0][0-9][0-9]/', $date) Errors('date'); //Assuming you wrote an Errors() function.
  else echo 'Email is formatted correctly';

?>

[[SOLVED] on main page is welcomes users but its the wrong user]

Where's your login script? In it, do you set a cookie or session variable that contains the user's id or username?

[[SOLVED] on main page is welcomes users but its the wrong user]

You're not specifying any criteria in your MYSQL query. You're selecting ALL users...since you're not looping through results, it's likely showing the username alphabetically, in descending order.

[not allowing html in a text area ...]

http://us2.php.net/strip_tags

 

For more info on strip_tags()

[not allowing html in a text area ...]

<?php

  $message = htmlspecialchars(strip_tags($_POST['message']));

?>

[What's my next step]

Look into Object Oriented Programming (OOP). You may not use it for smaller tasks/scripts but when doing commercial/paid work, it makes more sense. It also encourages clean/organized code and will keep you from using repetitive code.

[Simple Regex problem]

Even a better idea...CSS:

 

#techcone
{
    font-size: 11px;
    color: #FF9900;
    font-family: book antiqua;
}

 

<html>
<head>
  	
    <title>More Cowbell</title>
  
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
    <meta name="robot" content="index, follow" />
    
    <link rel="stylesheet" type="text/css" href="style.css" /> 
    
</head>

<body>

  <div id="techcone">
    The font size, color and font family have been defined in your CSS!!
  </div>

</body>
</html>

 

Now....if you are trying to make it dymaic (Your example code isn't clear, as you're using a non HTML tag), you'd use a different method. But you can even use a dynamic style sheet for that as well.

[Still have problems with passing VARS via SESSION]

Where's the part where you actually set SESSION variables and assign values to them?

[Changing browser status bar contents in php.]

phpBB is using whatever the site/IP is in the settings. To change it to domain, simply login to your phpBB admin and edit the main settings. That's it.

 

Also...not a PHP programming question :-P