fwrite not writing

Question

 $fp = fopen('log.txt', 'w');
 fwrite($fp, 'Missing gallery image for: ' . $row['toolbar_id'] . '\n');

The code above is not writing to the file. the $row['toolbar_id'] is a value from a for each loop. Any suggestions? There is no PHP error, as the file does open as I have debugged that part.

Solution

Try this for extra surety

ini_set('display_errors', 'On');
error_reporting(E_ALL);

$fp = fopen('log.txt', 'ab');
if (false === $fp) {
    throw new RuntimeException('Unable to open log file for writing');
}

$bytes = fwrite($fp, 'Missing gallery image for: ' . $row['toolbar_id'] . PHP_EOL);
printf('Wrote %d bytes to %s', $bytes, realpath('log.txt'));
fclose($fp);

Edit: Changed the "write" flag (w) to "append" (a) as truncating a log file doesn't sound like a great idea

Comments

[lockdown]

I have tried this as well, No error, and still no writing to the file. I put permissions on the .txt file as 777 just for sake of not missing anything.

[Phil]

@BrandonEllis I've added a debugging message for the fwrite() call. Try that and see what it says. I have a feeling you may be looking at the wrong log.txt file.

[Phil]

@BrandonEllis So what was the problem?

[lockdown]

I think you were right in terms of which log-file it was writing to. Although, there were no other log files created and with no fopen error its still rather confusing as to what was happening.

[MoshMage]

I know this is from last year but.. what does the 'ab' mean? a=append and the b option stands for what?

[Phil]

@MoshMage b == binary mode. From the docs - For portability, it is strongly recommended that you always use the 'b' flag when opening files with fopen().

[MoshMage]

Thanks for the reply; somehow my code wouldn't work without the 'b' hence my asking :)