Is this possible?

http://spiderseatbabies.com/test/

When I submit the form I want it to add the number to whatever is in the text file.

So if I put 4 into the form, and 46 was in the text file, it would go to 50 instead of 4.

index.php
<?php
$file = "m.txt";
$file_open = fopen($file, 'a+');
$theData = fread($file_open, filesize($file));
echo $theData;
?>


form.php
<?php
$file = "m.txt";
$somecontent = $_GET['add'];
if (is_writable($file)) {
if (!$handle = fopen($file, 'w+')) {
echo "Cannot open file ($file)";
exit;
}
if (fwrite($handle, $somecontent) === FALSE) {
echo "Cannot write to file ($file)";
exit;
}

echo "Added ($somecontent)";

fclose($handle);

} else {
echo "The file $file is not writable";
}
?>

<?php
$file = "m.txt";
$theData = file_get_contents($file);
$somecontent = $_GET['add'] + $theData;
if (is_writable($file)) {
if (!$handle = fopen($file, 'w+')) {
echo "Cannot open file ($file)";
exit;
}
if (fwrite($handle, $somecontent) === FALSE) {
echo "Cannot write to file ($file)";
exit;
}

echo "Added ($somecontent)";

fclose($handle);

} else {
echo "The file $file is not writable";
}
?>

Won't that work? it was basically what you had...

I tried that but it doesn't work.

Is there an error or is the info in the file just wrong?

Instead of adding, it just changes whatever is in the file to whatever you put in the form.

<?php
$file = "m.txt";
$theData = file_get_contents($file);
$somecontent = $_GET['add'] + $theData;
if (is_writable($file)) {
if (!$handle = fopen($file, 'w+')) {
echo "Cannot open file ($file)";
exit;
}
if (fwrite($handle, $somecontent) === FALSE) {
echo "Cannot write to file ($file)";
exit;
}

echo "Added ($_GET[add])";

fclose($handle);

} else {
echo "The file $file is not writable";
}
echo file_get_contents($file);
?> works for me =\

Oh I thought it was the same with "+ $theData" added, didn't see the other stuff.

Thanks a lot, it works.