<?php
include('includes/header.php');
// set error reporting to all
error_reporting(E_ALL);
// variable being passed via POST ternary operator
$str_write = isset($_POST['message']) ? $_POST['message'] : '';
// scrub input
$str_write = htmlspecialchars($str_write);
echo("<h1>Veronica's Reader-Writer:</h1>");
echo('<h2>This script finds/creates and reads/writes a file</h2>');
$myFile = 'read_write.txt';
// if file does not exist, create one
echo('Looking for file... <br>');
if(file_exists($myFile))
{
echo('File found! <br>');
}
else
{
echo('File is NOT there -- creating a new file. <br>');
// create a new file
$handle = fopen($myFile, 'w') or die('Could not create file.');
fwrite($handle, '');
fclose($handle);
}
echo('<br>Checking for readability... <br>');
// try reading the file
$handle = fopen($myFile, 'r');
if($handle)
{
echo('File is readable -- reading the file. <br>');
// verify the filesize
if (filesize($myFile))
{
// read the contents of the file
$str_read = fread($handle, filesize($myFile));
fclose($handle);
// add new line breaks
$str_read = nl2br($str_read);
echo("File reads: $str_read<br>");
} else
{
echo("Click refresh on your browser to see what the file, $myFile, says. <br>");
}
}
else
{
echo("Cannot read the $myFile ! <br>");
}
echo('<br>Checking for writeability... <br>');
// try writing the file
$handle = fopen($myFile, 'w');
if($handle)
{
echo('File is writeable -- writing the file. <br>');
// write the new value from the input to the file
fwrite($handle, $str_write);
fclose($handle);
echo("Writing~ $str_write ~to the file.<br>");
}
else
{
echo("Cannot write to the $myFile !");
}
?>
<br><br>
<form action="" method="POST">
<label for="message">Message</label>
<textarea id="message" name="message" rows="4" cols="50"><?php echo($str_write); ?>
</textarea>
<br><br>
<input type="submit" name="submit" value="Submit">
</form>
<?php
include('includes/footer.php');
?>