Question

This piece of code allows: 1) creation of a folder 2) creation of a backup file 3) elimination of some data present in the db, with respect to a time interval.

In local, this code, works perfectly, having reported it online, instead, creates the folder correctly, creates the file, deletes the values in the db, but does not write the deleted files in the backup file, having tested it, I found myself with some deleted data, not backup.

And this is a problem, so my question is what can it be since the erasure happens but nothing is written?

How do I make a test, fictitious for the $ ok variable to be written?

<?php

$databaseHost = 'xxx';
$databaseName = 'xxx';
$databaseUsername = 'xxx';
$databasePassword = 'xxx';
$connessione = mysqli_connect($databaseHost, $databaseUsername, $databasePassword, $databaseName);

$query = $connessione->query("
    SELECT *
    FROM Log_sds
    WHERE data_log < DATE_SUB(NOW(), INTERVAL 7 DAY)
");

$results = $query->fetch_all(MYSQLI_ASSOC);
$ok = json_encode($results);

function makeDirectory($path, $mode)
{

    if (!is_dir($path)) {
        return mkdir($path, $mode, true);
    } else {
        echo $path . " already exist!";
    }
}

$path = 'backup_LOG';
$mode = 0777;

// or you can add here that if exist does not call the function makeDirectory
if (!is_dir($path)) {
    $risultato = makeDirectory($path, $mode);
}

$fileName = 'backup_LOG/backup_file_' . date('Y_m_d') . '.txt';
$file = fopen($fileName, 'a');
//$file = fopen($fileName, 'x+');
fwrite($file, $ok);
fclose($file);

if (count($results) > 0) {
    $firstId = reset($results)['data_log'];
    $lastId = end($results)['data_log'];
    //$stmt = $connessione->prepare("DELETE FROM Log_sds WHERE data_log < DATE_SUB(NOW() , INTERVAL 7 DAY)");
    $stmt->bind_param('ii', $firstId, $lastId);
    $stmt->execute();
}
?>

Answer 1

It's a folder permission problem.

Allow writing in your online folder

Take a look at this

How do I change permissions for a folder and all of its subfolders and files in one step in Linux?

You can even change permission from PHP with chmod()

// Read and write for owner, nothing for everybody else
chmod("/somedir/somefile", 0600);

// Read and write for owner, read for everybody else
chmod("/somedir/somefile", 0644);

// Everything for owner, read and execute for others
chmod("/somedir/somefile", 0755);

// Everything for owner, read and execute for owner's group
chmod("/somedir/somefile", 0750);

https://www.php.net/manual/fr/function.chmod.php

Local does not match with online - PHP

1 个答案: