..argument not a valid stream resource

[gosuc2000]

Hello List,

being new to php, I have some problems writing the content of a textarea into a file. In my case, I always geht the error
rewind() errmsg
fputs()errmsg
fclose()errmsg ,
each functionname in the errormessage is followed by
"supplied argument is not a valid stream resource in file ... on line .."

Here is the excerpt of my code:

.
.
<form action="<php rcho $PHP_SELF; ?> method="post">
.
.
<table....
.
<td><textarea name="messages" rows=3 cols=40 scroll=yes wrap=soft></textarea><td>
..
.
</form>

$file="comment.txt"
if (isset($_POST[`messages']))
{
$pointer=fopen($_POST['file'],"r+"); <<<above error here
$_POST['messages']=stripslashes(nl2br($_POST['messages']));
rewind ($_POST['pointer']);
fputs($_Post['pointer',$_POST['messages'); <<<above error here
fclose($_POST['pointer']); <<<above error here
}
?>


I can't see right now, what is wrong with the code.
Can anybody help me? Any help is apreciated.

Thanks for your help in advance.

Best regards,

Fred

 

[Vragabond]

What is in your $_POST['pointer']. Without that, we can hardly help you. But...

1. variables in php are case sensitive. That means that $_Post is not the same as $_POST
2. you can't use backtick and single quote to delimit index in an array as you do it here: if (isset($_POST[`messages']))
3. when you begin a bracket, you need to close it as well, not like here: fputs($_Post['pointer',$_POST['messages');

Try correcting errors like this:

if (isset($_POST['messages']))
{
  $pointer = fopen($_POST['file'],"r+");
  $_POST['messages'] = stripslashes(nl2br($_POST['messages']));
  rewind ($_POST['pointer']);
  fputs ($_POST['pointer'],$_POST['messages']);
  fclose ($_POST['pointer']);
}

Still, we need to know what is in the pointer.

 

[gosuc2000]

Hi Vragabond,

thank you for your rapid response. I have to apologize for not taking the time to verify what I typed in. The errors you showed me are not in the original script, and I tried to translate from German text into English 'on the fly' - sorry.
I tried to check the content of the message-variable
after submitting the form, and the content was there. What I could not find was the content of the pointer.

This time I cut and paste the text of the script in.

(Mitteilungen = message)

<tr>
<td>Mitteilungen an uns:</td>
<td><textarea name="Mitteilungen" rows=3 cols=40 scroll="yes" wrap="soft"></textarea></td>
</tr>
.
.
.
<?php
$datei="comment.txt"; <<< datei= filename
if (isset($_POST['Mitteilungen']))
{
echo "Einsprung erfolgreich ! \n" . $_POST['Mitteilungen']; <<< messagecontent was succesfully typed
$zeiger=fopen($_POST['datei'],"r+"); << zeiger = pointer
if (isset($_POST['datei']))
{
echo "pointer-value is: " . $_POST['zeiger'];<<no output!!
}
$_POST['Mitteilungen']=stripslashes(nl2br($_POST['Mitteilungen']));
rewind($_POST['zeiger']);
fputs($_POST["zeiger"],$_POST["Mitteilungen"]);
fclose($_POST["zeiger"]);
}
?>

Hope this is better this time
Please excuse my poor English

regards,

Fred

 

[gosuc2000]

Hi,

I found another error in the script.

I changed
$zeiger=fopen($_POST['datei'],"r+");
if (isset($_POST['datei'])) <<< error datei = filename
{
echo "Zeigerwert ist: " . $_POST['zeiger'];
}


into


$zeiger=fopen($_POST['datei'],"r+");
if (isset($_POST['zeiger'])) <<< correct zeiger = pointer
{
echo "Zeigerwert ist: " . $_POST['zeiger'];<<< print pointervalue , it didn't print anything !!!!!
}


regards

Fred

 

[gosuc2000]

I solved my problem ...

I had to use the $_POST.. notation for ALL values.

to set the file-variable it must be
$_POST['datei']="comment.txt";

For the pointer it has to be
$_POST['zeiger']=fopen($_POST['datei'],"r+");

Under this notation I also received the pointer-value.

Perhaps a final question. I thought I could use the notation without $_POST .. etc, if I "stay" on the same script for getting the form-data.
But if I have to use this notation, does this have to do something with the php-variables??

Regards,
Fred

 

[Vragabond]

It seems like you do not understand the use of the superglobal array $_POST. It contains the values that have been sent from the previous page via a post method on the form. It does not hold variables that you create in the current script. So, by looking at your code, I guess it would make sense to do:

<?php
  $datei = "comment.txt";
  if (isset($_POST['Mitteilungen']))
  {
    echo "Einsprung erfolgreich ! \n" . $_POST['Mitteilungen'];
    $zeiger = fopen($datei,"r+");
    if ($zeiger)
    {
      $_POST['Mitteilungen'] = stripslashes(nl2br($_POST['Mitteilungen']));
      rewind ($zeiger);
      fputs ($zeiger, $_POST["Mitteilungen"]);
      fclose ($zeiger);
    }
  }
?>

 

[gosuc2000]

Hello Vragabond,

thank you for the code-example and the explanation
about global arrays. I used your example and the problem is gone. But I will read again the use of global arrays, to better understand what I'm doing.

Again,
thanks for the advise.

regards,

Fred