[SOLVED] How to make PHP determine if POST variable is existant

[siwelis]

if (!$_POST['uploaded'] = NULL){

//If what was posted was NOTHING then

$treC = "0";

} else {

$treC = "2";

}

 

No matter what, it keeps making the variable equal to "0," even when something WAS posted. Does anyone know what I should be replacing "NULL" with? I tried with 0's, ||'s assigning initial values to the posting form such as 0, nothing has worked so far.

[brianbehrens]

[Barand]

if (isset($_POST['uploaded']) )

[per1os]

First off you are using the assignment operator a single "=". Second off to check null values, php gives you a nice function www.php.net/is_null. Third you probably want to check if it was set.

 

<?php
if (isset($_POST['uploaded']) && !is_null($_POST['uploaded'])){
//If what was posted was NOTHING then
   $treC = "0";
} elseif (isset($_POST['uploaded']) {
  // it was set and was not null
  $treC = "2";
}else {
 // it wasn't set
 $treC = "0";

}

 

 

[brianbehrens]

Even better.

[siwelis]

<?php

if (isset($_POST['uploaded']) && !is_null($_POST['uploaded'])){

//If what was posted was NOTHING then

    $treC = "0";

} elseif (isset($_POST['uploaded'])) {

  // it was set and was not null

  $treC = "2";

}else {

  // it wasn't set

  $treC = "0";

 

}

//Thank you for your replies. The above needed an extra ")" - Even when the Form has data entered, it still returns from "else" (verified with echo- almost said TRACE, been taking flash in school). I'm going to try tweaking it some, if you have any more suggestions, please let me know, and when it's solved completely, I'll post that on here.

[Psycho]

You don't need the three cases:

 

<?php
if (!isset($_POST['uploaded']) || is_null($_POST['uploaded'])){
    //If it was not posted or posted value is empty
    $treC = "0";
} else {
   // It was set and was not null
   $treC = "2";
}
?>

[per1os]

<?php
if (isset($_POST['uploaded'])) {
   if (is_null($_POST['uploaded'])) {
         echo 'Uploaded is null';
   }else {
         echo 'Uploaded is NOT null';
    }
}else {
  echo 'Post has not been set';
}
?>

 

Let's try that approach and insert the $treC where you want them to be.

 

Or you can do what mjdamato did, probably easier with his way. I am just posting this so you can kind of see the logic in a sense.

[siwelis]

I am sensing I am making a n00bie mistake. Since I am getting the

 

"Post has not been set"

 

... It will execute other commands before and after that script using that $_POST['uploaded']

(ie it will upload files to the site)

 

But still get the

 

"Post has not been set"

 

message.

[trq]

What is your current code?

[siwelis]

if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target_path)) {

    echo "The file ".  basename( $_FILES['uploaded']['name']).

    " has been uploaded";

} else{

    echo "<b>No image was uploaded.</b>";

}

 

.. It works, I just only want it to work when there is a "uploaded" to upload. I just kind of rigged it up. I really appreciate all of your help!

[siwelis]

$target_path = "/".images."/".$_POST['cat_id']."/";

 

$target_path = $_SERVER['DOCUMENT_ROOT'].$target_path . basename( $_FILES['uploaded']['name']);

 

if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target_path)) {

    echo "The file ".  basename( $_FILES['uploaded']['name']).

    " has been uploaded";

$folder = "website.com".$_POST['cat_id']."/".$_FILES['uploaded']['name'];

} else{

//do nothing

    echo "No Image File was uploaded.";

$folder = "0";

}

 

--------------------

SOLVED!

 

It seems two pieces of code may have been conflicting, so I combined the two. Once again I really appreciate your advice! Though this wasn't completed quite as I had planned, maybe it was my subconscious defeating my want for speed which would of created spaghetti code.

 

Thank you!!!!!