fclose() expects parameter 1 to be resource, boolean given

[harsh-pawar]

While connection from browser to printer print successfully but after $printer -> close(); it throws fclose() expects parameter 1 to be resource, boolean given error

[mike42]

Hello, I have not seen this myself.

Would you mind sharing a self-contained example which shows the problem? This would allow me to run it myself, and also ses how you are using the library. Ideally you could also add some information about your platform, such as your OS and PHP version.

[harsh-pawar]

`<?php
require base_path().'/vendor/autoload.php';
use Mike42\Escpos\PrintConnectors\NetworkPrintConnector;
use Mike42\Escpos\Printer;
try {
$connector = new NetworkPrintConnector("192.168.1.123", 9100);
$printer = new Printer($connector);
$printer -> text("Hello World!\n");
$printer -> cut();
//
// /* Close printer */
$printer -> close();

} catch (Exception $e) {
    echo "Couldn't print to this printer: " . $e -> getMessage() . "\n";

} finally {
    ob_clean();
    flush();
    $printer->close();
}
?>`

I have just use above code
My Platform is : Laravel 5.6
I am using Xampp server on Ubuntu 18.04 and php version is : 7.2.4

[mike42]

Excellent.

So, you are closing the printer twice. Remove the first call to $printer -> close() then this issue will go away.

It is a bug that escpos-php throws a warning here, I would expect it to silently ignore the second close().

[JonesSmithNew]

Thank you mike42, you are great!

You have just saved my ass!

I had a problem of opencart upgrade php problem that shows "Warning: fclose() expects parameter 1 to be resource, boolean given in /var....../log.php on line 14 Warning: fclose() expects parameter 1 to be resource, boolean given in...."!!

After your answer, I though there is ,also, double closed problem! So I comment out the line 14 on the log.php. So, now the problem has gone. My website working like a charm!

Thank you mike42! Good man!!