Checking fields are not left empty

[waydown]

Hi,
I have a form validation and then the form.
<?php
if ( isset($_POST['submitted'])
{ if ($_POST[name])
{ $name = $_POST[name];
}
else
{ //what code goes here?
}
}

<form name="A.php" action="" method="post">
......
<input type="text" name="name" id="name" />
....
<input type="text" name="email" id="email" />
....
</form>
?>

What I would like to happen in the else statement is that if name field is left blank user is automatically redirected to the name field which should be highlighted and a small error message that the name field was left empty should appear. What would be the code for that? I would be very grateful for all help.

 

[jpadie]

google php form validation

but essentially there is no automated method - you have to use a framework (such as quickform) or roll your own. for you this may suffice

<?php
if ( isset($_POST['submitted'])
{  if ($_POST[name])
   {  $name = $_POST[name]; 
    }
    else
   { 
     $nameStyle = 'highlight';
     $nameMessage = 'You must include a name';
   }
}
<style type="text/css">
input .highlight { background-color: yellow; }
</style>

<form name="A.php" action="" method="post">
......
<input type="text" name="name" id="name"  class="<?php  echo isset($nameStyle) ? $nameStyle : '';?>" /><br />
<?php echo isset($nameMessage) ? $nameMessage . "<br/>": '';?>
....
<input type="text" name="email" id="email" />
....
</form> 
?>

 

[waydown]

Hi jpadie,
Many thanks for your solution, it worked nicely for me. I would like to ask why the solution you gave me does not work for:
<input type="file" name="picture" id="fileUpload"
accept="image/gif, image/jpeg, image/png" />
I've tried writing:
<?php
if ( isset($_POST['submitted'])
{ if (isset($_POST['picture']))
{ //do something
}
else
{
$fileMessage = 'You must upload an image';
}
}
.........

<input type="file" name="picture" id="fileUpload"
accept="image/gif, image/jpeg, image/png" />
<?php echo isset($fileMessage) ? $fileMessage . "<br/>": '';?>

There must be something wrong with my code because the error message does not appear. Again many thanks for your help.

 

[feherke]

Hi

Uploaded file information can be found in the [tt]$_FILES[/tt] array, not in [tt]$_POST[/tt].

For more details about [tt]$_FILES[/tt]'s structure and usage examples see POST method uploads in the PHP documentation.

Feherke.

http://feherke.github.com/