PHP - Quick Question

What is the difference between these two lines


Code: [Select]
!isset($_POST[$requiredField])
and

Code: [Select]
!$_POST[$requiredField]

hi.
when i get into some function manual and there is a note says.
Quote

This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.

.
is that meaning that after 5.3.0 version this function will not be supported?
thanks , Mor.

Does storing multiple values in 1 database field with a varchar let's say set at 150, all separated by
"|'s" so I don't have to create a field name for each one is it better performance wise or no? (storing 6-7 different |'s that will be outputted with a array ofc)

?

Is there a way to only output the first, say, 30 words of a variable? I have a way to do it in mind, but seems like it's messy and not practical.

Any suggestions?

E.g:

WITHOUT LIMIT: Welcome to my store. Would you like to buy something? We have really good noodles and fishes in doodle pools.
WITH LIMIT: Welcome to my store. Would you like...

Sort of like a short preview.

I have data that is in a form right now being displayed in a textbox because I want the user to see the 'name' but the data that needs to be passed when submit is pressed is the id of the entity. So if I have  <label id = "username" Value = "3"> Heintzman</label> can I use $_Post to retrieve that value once the form has been submitted because I dont want the data to be displayed in a textbox it looks ugly and isnt long enough for the text without editing.

Hi
I have a quick question. I want my javascript to be able to access my php page because my php page has the coding to access the database and then it has to give me a list of the stuff in the database the alert box.
This is the code that I have. I know that I can use it but I'm not sure how to go about it.

getPHPResponse=function(){
   
   
   var url="/countries/ajax_return_response";


       $.post(url, {'format': 'JSON', 'countries': '$countries'}, function(data){
      //this is where jsvascript must do something

              alert(data);
   });
}

Can I replace the set message text for $body and $subject with $_POST['message']; $_POST['subject']; so I can get a users input from a html form via php as the action.  Instead of the set text in the script.
As seen http://email.about.com/od/emailprogrammingtips/qt/PHP_Email_SMTP_Authentication.htm

quick question... I have a column in my table called views. I want to reset the column to 0 for each row in the table. What's the easiest way to do this?

Say, Code: [Select]
$ok = 'ABCDEFG'
What is the command to check whether $ok contains 'C'?

Hello everyone,

With the recent time change, I found a new problem with my code.  I think I have it fixed by utilizing the "date_default_timezone_set()" function, but I have a question.  Does this php time/date function automatically account for daylight savings time, is it something that will have to be adjusted in my code?  I think I can figure out how to adjust it if it's needed, but I don't want to have to do the work if it is updated automatically.  Thanks for any help.

Hi guys/girls,
any pointers on this would be greatly appreciated.
basically i have a table called HORSES with 2 fields: HORSE_ID and HORSE_NAME.
I want to create a page which dynamically shows all the horse ID's, then a checkbox, then the horse names which can be edited.
You can then edit a horse name, click the edit checkbox, and post the form to edit the database.
The Form shows the fields easily enough, but doesnt update the database for some reason.
Anyone got any ideas?

<?php
      include("..\connection\connection.php");
     $conn = oci_connect($UName,$PWord,$DB)
      or die("Couldn't logon.");
  if(empty($_POST["check"]))
  {
    $query = "SELECT * FROM HORSE ORDER BY HORSE_NAME";
    $stmt = oci_parse($conn,$query);
    oci_execute($stmt);

?>
    <form method="post" action="horsemultiple.php">
      <table border="1" cellpadding="5">
      <tr>
        <th>Horse_ID</th>
        <th>Edit</th>
        <th>Horse Name</th>
      </tr>
<?php
      while ($namearray = oci_fetch_array ($stmt))
      {
?>
        <tr>
          <td><?php echo $namearray["HORSE_ID"]; ?></td>
          <td align="center">
            <input type="checkbox" name="check[]"
              value="<?php echo $namearray["HORSE_ID"]; ?>">
          </td>
          <td align="center">

<input type="text" size="5"
            name="<?php echo $namearray["HORSE_ID"]; ?>"
            value="<?php echo $namearray["HORSE_NAME"]; ?>">

          </td>
        </tr>
<?php
      }
?>
      </table><p />
      <center>
        <input type="submit"
          value="Update Selected Horses">
      </center>
    </form>
<?php
    oci_free_statement($stmt);
  }
  else
  {
    foreach($_POST["check"] as $id)
     {

   $query = "UPDATE HORSE
         set HORSE_NAME = ".$_POST[$id].
         " WHERE HORSE_ID ='".$id."'";
       $stmt = oci_parse($conn,$query);
       oci_execute($stmt);
       header("location: ../horse.php");

     }
  }
  oci_close($conn);
?>

Hi guys,

I was wondering if we have table of seats in a cinema (which makes the quantity to 1) and two users are booking the same seat at the same time on our application. How can we prevent that?

I though if we create a session or even update that seat row and then if user doesn't finish the booking/or leave the browser on fora while in 10-15 minutes, that session still remains on. I'm sure we can expire that session how can we prevent both users have the same session and if one doesn't complete the purchase for any reason then how session can automatically update the database after that 15 minutes?

Thanks in advance.

Long story short i'm paginating database results. So pages = results / res-per-page-limit

but 28 / 10 will be 2.8 should i use round() or ceil()?

I need to use a HTML  form to retrieve data in a certain order of ascending/descending using a drop down box and a true/false statement button for one of the values from a MySQL database. Im guessing I need a php script to query the database, but can I add the php code to the HTML or upload a php to the server that links the HTML thank you

Hello, If we have large amount of data we always use SCP to copy data from remote server.

scp -P 100 user@192.168.2.3: /home/user/folder  /home/user1/folder/.


But if DSL (Internet) of local computer disconnects I observed failure of transfer many times and this whole process becomes irritating. 

Is there any alternative way to use scp or rsync with php so that we can execute it with script ?

Something like this ?

<?php
// Having shell access but its not working 4 me...
$conn = ssh2_connect('ftp.server.com', 100);
ssh2_auth_password($conn 'user', 'pass');
ssh2_scp_send($conn, '/local/filename', '/remote/filename', 0644);
?>


Another question is there any way we can run such code with the help of shell_exec()
or is this implementation is secure?

Thanks in Advance!