PHP text file write issue

[gregaryb]

I have this PHP code to write add a keyword to the end of a robots.txt file.
My web page gets an alert message saying that the keyword was successfully added to robots.txt.
However the contents of the actual robots.txt never changes.
What the hell?
I am at a loss to figure out what is happening here.
Any suggestions?

    if (isset($_POST["submit_ban_keyword"]))
    {
        /*
            file_put_contents does not work and does not throw an error.
        */
        ini_set('display_errors', 1);
        ini_set('display_startup_errors', 1);
        error_reporting(E_ALL);
        
        $strRobotsFileName = DoGetParentOrCurrentDir() . "robots.txt";
        $fileRobots = @fopen($strRobotsFileName, "r");
        $arrayLines = [];
        
        if ($fileRobots !== false)
        {
            while (!feof($fileRobots))
                $arrayLines[] = fgets($fileRobots);
            array_unshift($arrayLines, "User-agent: " . $_POST["text_keyword"]);
            fclose($fileRobots);

            $fileRobots = @fopen($strRobotsFileName, "w");
            if ($fileRobots !== false)
            {
                for ($nI = 0; $nI < count($arrayLines); $nI++)
                {
                    fputs($fileRobots, $arrayLines[$nI] . PHP_EOL);
                }
                if (fclose($fileRobots) === true)
                    PrintJavascriptLine("alert(\"'" . $_POST["text_keyword"] . "' was added to banned list in the file robots.txt...\")", 1, true);
                else
                    DoAlertLastError();   
            }
            else
                DoAlertLastError();
        }
        else
            DoAlertLastError();
    }

 

[JosiahMaybe]

Could you maybe be missing a / to get to the robots.txt? Also, you are opening it read only, try open with "rw" maybe? edit, oops, you then did write access. X E.

 

[Antero360]

I have this PHP code to write add a keyword to the end of a robots.txt file.
My web page gets an alert message saying that the keyword was successfully added to robots.txt.
However the contents of the actual robots.txt never changes.
What the hell?
I am at a loss to figure out what is happening here.
Any suggestions?

    if (isset($_POST["submit_ban_keyword"]))
    {
        /*
            file_put_contents does not work and does not throw an error.
        */
        ini_set('display_errors', 1);
        ini_set('display_startup_errors', 1);
        error_reporting(E_ALL);
       
        $strRobotsFileName = DoGetParentOrCurrentDir() . "robots.txt";
        $fileRobots = @fopen($strRobotsFileName, "r");
        $arrayLines = [];
       
        if ($fileRobots !== false)
        {
            while (!feof($fileRobots))
                $arrayLines[] = fgets($fileRobots);
            array_unshift($arrayLines, "User-agent: " . $_POST["text_keyword"]);
            fclose($fileRobots);

            $fileRobots = @fopen($strRobotsFileName, "w");
            if ($fileRobots !== false)
            {
                for ($nI = 0; $nI < count($arrayLines); $nI++)
                {
                    fputs($fileRobots, $arrayLines[$nI] . PHP_EOL);
                }
                if (fclose($fileRobots) === true)
                    PrintJavascriptLine("alert(\"'" . $_POST["text_keyword"] . "' was added to banned list in the file robots.txt...\")", 1, true);
                else
                    DoAlertLastError();  
            }
            else
                DoAlertLastError();
        }
        else
            DoAlertLastError();
    }

Is there a need for that backslash here:

...\")