need help please with total

[tanyal]

Hi I am pretty new to this stuff so how would i have a form for inputing a number and then that writes to a text file and then adds them every time i submit and shows me the total?

[devinemke]

a simple example:

<?php
echo '
<form action="" method="POST">
number: <input type="text" name="number"><br>
<input type="submit" name="submit" value="add">
</form>
';

$path = 'numbers.txt';
$file = file($path);

if (isset($_POST['submit']))
{
	$number = trim($_POST['number']);
	if ($number && is_numeric($number))
	{
		$handle = fopen($path, 'a') or exit('could not open file');
		if ($file) {$number = "\r\n" . $number;}
		fwrite($handle, $number) or exit('could not write to file');
		$file[] = $number;
	}
	else
	{
		echo 'bad number';
	}
}

$total = array_sum($file);
echo '<br><br>total: ' . $total;
?>

[tanyal]

Thank you this worked. At first it keps saying couldnt open the text file, but I realized I didnt set my permissions right. Thanks again.

[kkobashi]

devinemike did a great job with that code but there are two things missing:

1) You need to close the file with an fclose()
2) Whenever you create a file on disk that may be accessed many times from multilpe browser instances, you need to check for file sharing... (i.e. flock/funlock). If you don't, you will corrupt the file.'

Better to be safe than sorry....

Look at the below for an example:
http://us3.php.net/flock