File Put Contents file with empty content

Preconditions:

• Magento ver. 2.1.1 installed

Steps to reproduce

1. Call $driverFile->filePutContents('file.txt', '')
   where driverFile is an instance of \Magento\Framework\Filesystem\Driver\File

Expected result

1. file.txt contains is created

Actual result

1. getting error The specified "file.text" file could not be written

Solution

In code:

        $result = @file_put_contents($this->getScheme() . $path, $content, $mode);
        if (!$result) {
            throw new FileSystemException(
                new \Magento\Framework\Phrase(
                    'The specified "%1" file could not be written %2',
                    [$path, $this->getWarningMessage()]
                )
            );
        }

Check should be
if ($result !== false) { ... } instead of if (!$result) { ... }

As per PHP Manual:

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.

[veloraven]

@marcel-moldovan-vm thank you for your report.
Please, also identify which version of Magento you are running.

@veloraven the Magento version used is 2.1.1. You can check https://github.com/magento/magento2/blob/develop/lib/internal/Magento/Framework/Filesystem/Driver/File.php#L528 it does not contain the fix (as for the moment when the comment was added).

[KrystynaKabannyk]

Hello @marcel-moldovan-vm, could you please create a pull request for your issue? It will accelerate the fix of the issue.

Dear @KrystynaKabannyk , I created an issue because I wanted to quickly report it, due to no time to create a PR.

[magento-engcom-team]

@marcel-moldovan-vm, thank you for your report.
We've created internal ticket(s) MAGETWO-81366 to track progress on the issue.