php - create txt file and add all new records to it

Question

Good,

I am creating a Function that will create a new log.txt, if you already exist just write the new data.

But it is giving errors, since I am testing, and I click REFRESH to the browser it just did this.

 ficheiro log.txt \\
 ola
 /n

I wanted to fix the problems and add more security in the files

$path_log = 'inc/logs/log1.txt'; 
$log_msg = 'ola'. PHP_EOL;
log_editor($path_log, $log_msg);

function log_editor($path_log, $log_msg) {

   $Handle = fopen($path_log, 'wb');

   if (file_exists($path_log)) {    

    fwrite($Handle, $log_msg. '\n');
    //file_put_contents($file, $contents);
    fclose($Handle);        

   } else {

    fwrite($Handle, $log_msg);
    fclose($Handle);         
   }     
}

Where am I going wrong...?

Answer 1

You are always putting the file pointer at the beginning using the mode w. In this way, he will always write upon what has already been written.

To write at the end of the file, you need to use the a. Thus:

$Handle = fopen($path_log, 'a');

This way it will start writing at the end of the file.

Another thing, using the mode a you do not need to verify that the file exists. Because if there is no command itself it will create it. So this piece of code is not necessary:

if (file_exists($path_log))...   

So I would leave the code like this:

$path_log = 'inc/logs/log1.txt'; 
$log_msg = 'ola'. PHP_EOL;
log_editor($path_log, $log_msg);

function log_editor($path_log, $log_msg) {

   $Handle = fopen($path_log, 'ab');

   fwrite($Handle, $log_msg);
   fclose($Handle);

}

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