What is wrong with my code?

[lennalf]

I'm trying to set up a script that checks an array of values sent by a web form for blanks and then reacts by telling the user to fill in the blanks. This is a part of the script that is giving me a problem:

//check the submitted fields for blanks
foreach ($HTTP_POST_VARS as $key => $value)
{
 if ($key == "alias" or $key == "email")
 {
  if ($value == "" )
  {
   $blank_array[$key] = "blank";
  }
 }
};
//display error message if there are any blanks
if (@sizeof(blank_array) > 0)
{
 echo "<b>You forgot to enter the following critical blanks:</b><br>";
 foreach ($blank_array as $key => $value)
 {
  echo "{$label_array[$key]}<br>";
 }
}

When I try to run this, I get an error saying that the last foreach statement in that section of code has an invalid argument. Why is this and how can I fix it? Thank you!

[RedDragon]

replace

if (@sizeof(blank_array) > 0)

with

if (@sizeof($blank_array) > 0)

if that doesnt fix it you can get a very useful information from the error message: $blank_array doesnt seems to be an array/have any content

[swon]

Hi lennalf,

I would do it by the following short script:

<?
$checkfields = array("alias","email"); // set in the required form fields
$error = "<b>You forgot to enter the following critical blanks:</b><br>";
foreach ($HTTP_POST_VARS as $key => $value)
{
if (in_array($key,$checkfields))
{
if ($value == "")
{
$error .= "- $key<br>";
}
}
}
echo $error;
?>

[lennalf]

I got it working now. Thanks very much!