Form problem after validation.

[ouch_]

Hi,

I got a problem with form validation. Lez say i fill up a form, i set it to validate if user exist and display the error on the same page using post method. The page reloads and all the fields are flushed away. How do they keep those fields input with previous values?

[Houdini]

By echoing the value for that field like

<input type="text" name="last_name_input" size="20" value="<?php echo $_POST['last_name_input']; ?>">

[stewartship]

post me the code and i will give you a running example!

[ouch_]

Tried something like this didnt work for me.
Got an error:
Notice: Undefined index: uid in c:\Inetpub\wwwroot\Ideaz\sub\register.php on line 256
value="" size="15" maxlength="12">

  <input name="uid" type="text" id="uid" <?php if(isset($_POST)){ echo "value=\"".$_POST['uid']."\""; }?>  size="15"  maxlength="12">

[stewartship]

with the if (isset($_POST))

you need to use if(isset($_POST['uid'])) otherwise is does not know what variable / input u r referring to

[ouch_]

I wanna use :

if (isset($_POST))

to check if the form has been posted. My form redirects back to itself upon an occur.

I tried if(isset($_POST['uid'])) doesnt work. The field didnt display my previous values.

[stewartship]

ok...
if you post the code then it will be easier to help you, many different methods for doing everything in php, need to see the code as a whole or at least the section in question to help you out....

[ouch_]

i was thinking shld i do something coding at the top to store the post and declare it as another variable.

Something like:

<?php 

if(isset($_POST))
{

$uid = $_POST['uid'];

}


?>


<input name="uid" type="text" id="uid" value="<?=$uid?>" size="15"  maxlength="12"> 

[laserlight]

I tried if(isset($_POST['uid'])) doesnt work. The field didnt display my previous values.

That means that you didnt use it correctly.

<input type="text" name="last_name_input" size="20" value="<?php
if (isset($_POST['last_name_input']))
	echo $_POST['last_name_input'];
?>">

[ouch_]

ok i will post the lengthy codes of the form.

    <form action="<?php echo $editFormAction; ?>" method="POST" name="form1" onSubmit="MM_validateForm('uid','','R','fname','','R','Lname','','R','contact','','RisNum','email','','RisEmail','cemail','','RisEmail','address','','R','pwd','','R','cpwd','','R');return document.MM_returnValue">
          <table width="400" border="0" align="center" cellpadding="0" cellspacing="0">
            <tr>
              <td><div align="left">Username:</div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <input name="uid" type="text" id="uid" <?php if(isset($_POST['uid'])){ echo "value=\"".$_POST['uid']."\""; }?>  size="15"  maxlength="12">
</div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td><div align="left">Password:</div></td>
              <td><div align="left">Confirm Password: </div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <input name="pwd" type="password" id="pwd" size="15" maxlength="12">
              </div></td>
              <td>
                <div align="left">
                  <input name="cpwd" type="password" id="cpwd" size="15" maxlength="12">
              </div></td>
            </tr>
            <tr>
              <td><div align="left">First Name: </div></td>
              <td><div align="left">Last Name: </div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <input name="fname" type="text" id="fname">
              </div></td>
              <td>
                <div align="left">
                  <input name="Lname" type="text" id="Lname">
              </div></td>
            </tr>
            <tr>
              <td><div align="left">Gender:</div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <select name="gender" id="gender">    

                   <option value="Female" >Female</option>
                    <option value="Male">Male</option>
                  </select>
              </div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td><div align="left">Address:</div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td colspan="2">
                <div align="left">
                    <textarea name="address" cols="50" id="address"></textarea>
                </div></td></tr>
            <tr>
              <td><div align="left">Contact:</div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <input name="contact" type="text" id="contact" maxlength="8">
              </div></td>
              <td><div align="left"></div></td>
            </tr>
            <tr>
              <td><div align="left">E-mail:</div></td>
              <td><div align="left">Confirm E-mail : </div></td>
            </tr>
            <tr>
              <td>
                <div align="left">
                  <input name="email" type="text" id="email">
              </div></td>
              <td>
                <div align="left">
                  <input name="cemail" type="text" id="cemail">
              </div></td>
            </tr>
            <tr>
              <td><div align="left">
                <input name="level" type="hidden" id="level" value="Member">
				<input name="regdate" type="hidden" id="regdate" value="<?=date("Y-m-d");?>">
                <input name="status" type="hidden" id="status" value="Active">
</div></td>
              <td><div align="left"></div></td>
            </tr>
          </table>
          <div align="left"></div>
          <p>&nbsp;          </p>
          <p>
            <input type="submit" name="Submit" value="Submit">
            <input type="reset" name="Reset" value="Reset">
          </p>
          <p align="left">
            <input type="hidden" name="MM_insert" value="form1">
          </p>
        </form>

[ouch_]

laserlight wrote:

That means that you didnt use it correctly.

<input type="text" name="last_name_input" size="20" value="<?php
if (isset($_POST['last_name_input']))
	echo $_POST['last_name_input'];
?>">

the codes seem fine. I didnt get any errors though, but juz wont work.

[laserlight]

the codes seem fine. I didnt get any errors though, but juz wont work.

Try something simpler, like:

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="text" name="content" value="<?php
if (isset($_POST['content'])) {
	echo $_POST['content'];
}
?>" />
<input type="submit" value="Submit" />
</form>

[stewartship]

try using this technique:

<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">

"FORM DATA"

<input type="submit" name="submit" value="Submit" >

</form>

i find it much easier to handle.

use

if(isset($POST['submit'])){
echo $POST['uid'];
}

[stewartship]

Sorry had not refreshed and seen laserlight had already posted the same! but it is an easier to handle technique.

[ouch_]

$editFormAction = $_SERVER['PHP_SELF'];

<form action="<?php echo $editFormAction; ?>" method="POST" name="form1".....>

same as <form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">

I tried if(isset($POST['submit'])){
echo $POST['uid'];
}

got the same result... NOTHING!?!?!?! :bemused:

[ouch_]

Just realise laserlight comes from my country. haha

Greetings mate~

[laserlight]

Have you tried the script I posted?

Just realise laserlight comes from my country. haha
Greetings mate~

Greetings. Walkover? :p

[Houdini]

You are making it way too hard on yourself, there is not really a need to check if a value is set or not if you are submittin the form to itself, if the user has entered anything into one of the fields and then clicks submit then the use of just

<input type="text" name="last_name_input" size="20" value="<?php echo $_POST['last_name_input']; ?>">

will then echo the value of that field because it will be set when pressing the submit button If the user were to enter nothing into that field then it would echo nothing, or if they entered I like vanilla ice cream then you would see I like vanilla ice cream in that field. Try running it and putting values into the fields then hit submit, and you will see what I mean.

[Blulagoon]

The real issue here is that all error reporting is turned on, so he is getting the notice that the index is undefined the first time the file is run.

Were he to suppress E_Notice then he would have no problem. I don't know if he has tried LaserLights suggestion of putting an if statement to check submit is set before echoing the $_POST['last_name_input'] as I'd expect that to work without any errors.

Blu

[laserlight]

there is not really a need to check if a value is set or not if you are submittin the form to itself

One must check since the variables would not exist before the form has been submitted, i.e. when the page with the form is first loaded.