writing and reading a string to and from a server file

[jdvorak]

I have a web page with several JavaScript functions. One of the things I need to do is to read a string from a server side file (say tmp.txt) into a Javascript variable and also to write the value of a Javascript variable to the file, overwriting previous contents. That is all I want to do.

How can I do that? Thanks

Joe

[stevekapaun01]

Joe, at the risk of sounding patronizing, JavaScript cannot read or write information to or from files (on the server OR on a client’s computer.) You’ll need server side scripting for that: PHP, ASP.NET, Classic ASP and many others. I can give you code for PHP, but I do not know any other server languages.

<?php
$filename = "tmp.txt";

//reading from file
$fp = fopen($filename, "r") or die("Couldn't open $filename Ln 5.");
while(!feof($fp)) {
    $line = fgets($fp, 1024);
    echo $line;
}
fclose($fp);

//writing to file
$fp = fopen($filename, "w") or die("Couldn't open $filename Ln 13.");
fwrite($fp, "Hello World");
fclose($fp);
?>

[jdvorak]

Steve,

Thanks for the explanation and script. I thought this was the case but wasn't sure. The script is a big help since I am just starting to learn PHP. Thanks again.

Joe

[funkoozies1]

Steve,

Thanks for the explanation and script. I thought this was the case but wasn't sure. The script is a big help since I am just starting to learn PHP. Thanks again.

Joe

why not sure? i think it 's exact !