foreach $_POST find blank fields

[unistake]

Hi all,

 

I am trying to write a script that finds the blank $_POST values and add them to a $blank_array.

 

All I get is a blank page - any ideas?

 

Also is there some code I can put at the top of every php page to show exactly what the errors are? - I have tried a few scripts but have not found one to work universally.

 

include("cxn.php");

$reg = "G-".strtoupper($_POST['reg']);
$sql = "SELECT * FROM sales WHERE reg='$reg'";
$result = mysqli_query($cxn,$sql)
or die ("Couldn't execute query");

$num = mysqli_num_rows($result);
if ($num >0) // Listing Already Found 
{
	echo "The aircraft '$reg' is already listed!";
	echo $_SESSION['logname'];
}

foreach ($_POST as $value)
{
if ($value == "")
{
$blank_array[] = $field;
}
if (@sizeof($blank_array) > 0) // blank fields are found 
{
	$error = "Please fill in all the form.<br>";
	include ("../sell-your-reg.php");
}
}	
?>

[Pikachu2000]

What about checkboxes? They don't even show up in the $_POST array unless they're actually checked . . .

[BlueSkyIS]

are you missing an opening tag? might explain the blank page.

 

<?php

[unistake]

the $_POST's are only text fields, drop down menu items and one radio button. They all have values.

 

Thanks for the point on checkboxes though.

 

Sorry I have included the <?php - left it out of the script by mistake.

[AbraCadaver]

If you have a blank page then you need this:

 

error_reporting(E_ALL);
ini_set('display_errors', '1');

 

As for an array of the blank fields, this will do it (caveat, 0 and one or more spaces are considered blank as well):

 

$blank = array_diff(array_keys($_POST), array_keys(array_filter($_POST)));

[unistake]

That code for seeing the errors, I placed it at the top of the page but does not show any errors - just a blank page.

[BlueSkyIS]

are you POST-ing to the script? if not, you'll get a blank page. in fact, i don't see anything outputting anything unless there is an error.

[unistake]

Yes it does, if I take out the whole 'foreach' statement the script runs through but when I try to put the blank fields in to an array it isn't.

 

PHP is mind boggling at the best of times!

[BlueSkyIS]

this may need to be changed, as i don't see field defined anywhere. also, never use @.

 

$blank_array = array();
foreach ($_POST as $field=>$value) {
if ($value == "") {
    $blank_array[] = $field;
}
if (sizeof($blank_array) > 0) {
	$error = "Please fill in all the form.<br>";
	include ("../sell-your-reg.php");
}
}

[unistake]

No still not working.

 

My full code is here:

Maybe it is something elsewhere in the page.

 

<?PHP 
session_start();

include("../cxn.php");

$reg = "G-".strtoupper($_POST['reg']);
$sql = "SELECT * FROM sales WHERE reg='$reg'";
$result = mysqli_query($cxn,$sql)
or die ("Couldn't execute query");

$num = mysqli_num_rows($result);
if ($num >0) // Listing Already Found 
{
	echo "The aircraft '$reg' is already listed!";
	echo $_SESSION['logname'];
}

$blank_array = array();
foreach ($_POST as $field=>$value) {
if ($value == "") {
    $blank_array[] = $field;
}
if (sizeof($blank_array) > 0) {
	$error = "Please fill in all the form.<br>";
	include ("../sell-your-reg.php");
	exit();
	exit;
}
}

else // Aircraft Listing Not Found
{
	$password = md5($_POST['password']);
	$reg = "G-".strtoupper($_POST['reg']);
	$title = strtoupper($_POST['title']); // CHANGES THE TITLE OF THE ADVERT TO UPPER CASE
	$today = date("Y-m-d h:i:s");
	$email = $_SESSION['logname'];
	$icao = strtoupper($_POST['icao']); // CHANGES ICAO CODE TO UPPER CASE
	$query = "INSERT INTO sales VALUES ('','$email','$title','$reg','$_POST[category]','$_POST[manufacturer]','$_POST[model]','$_POST[engines]','$_POST[seats]','$_POST[aeros]','$_POST[purchasetype]','$_POST[price]','$icao','$_POST[details]','$today')";
	$result1 = mysqli_query($cxn,$query)
		or die ("Can't execute insert query");

	$destination='../aircraft/'.$reg."1.jpg";
	$temp_file = $_FILES['image']['tmp_name'];
	move_uploaded_file($temp_file,$destination);
	$destination2='../aircraft/'.$reg."2.jpg";
	$temp_file2 = $_FILES['image2']['tmp_name'];
	move_uploaded_file($temp_file2,$destination2);
	$destination3='../aircraft/'.$reg."3.jpg";
	$temp_file3 = $_FILES['image3']['tmp_name'];
	move_uploaded_file($temp_file3,$destination3);

	echo "your aircraft has been successfully added!";
}
?>