fopen - failed to open stream: Permission denied

问题

Is it possible to write data to CSV while the file is opened from desktop? Because I am trying to write some input data to CSV when user submit the form, but I am getting above error when the file is opened from my desktop. My system will only write to csv when I close the file.

Error when meeting the line $fp = fopen("C:\Users\lenovo\Desktop\sample.csv", "w");

回答1:

Change the permission of the file sample.csv by using the following command on the terminal in the folder where the file is-

chmod 777 sample.csv

回答2:

<?php       
       $myfile = fopen("C:\Users\lenovo\Desktop\sample.csv", "a+");
        // the variable holding the values
        $numbers;
        // write the variable in the text file created 
        fwrite($myfile, $numbers);
        // close the file when done
        fclose($myfile);
?>

W = Open a file for write only. Erases the contents of the file or creates a new file if it doesn't exist. File pointer starts at the beginning of the file

a+ = Open a file for read/write. The existing data in file is preserved. File pointer starts at the end of the file. Creates a new file if the file doesn't exist

I hope it helps

来源：https://stackoverflow.com/questions/45836374/fopen-failed-to-open-stream-permission-denied