I'd like to make a backup of my website using tar
command and exec
in Php
and I wrote a small script to does that but nothing happens... where I fault? I have php 5.6.5 and hosting linux that has exec
enabled and tar
command available. Here is a Php
example what I'd like to do.
<?php
$root = $_SERVER['DOCUMENT_ROOT'];
# root is /web/htdocs/www.example.com/home/
$name = "backup_" . date("[d-m-Y][H-i]") . ".tar.gz";
# name is backup_[25-02-2015][18-57].tar.gz
$skip = "*.gz";
# skip is the file I want to exclude (example: skip backup_[25-02-2015][18-57].tar.gz)
if ((substr($_SERVER['DOCUMENT_ROOT'],-1,1) == "/") && (substr($_SERVER['PHP_SELF'],0,1) =="/")) {
$sdir = $_SERVER['DOCUMENT_ROOT'] . substr(dirname($_SERVER['PHP_SELF']),1);
} else {
$sdir = $_SERVER['DOCUMENT_ROOT'] . dirname($_SERVER['PHP_SELF']);
}
# sdir is /web/htdocs/www.example.com/home/bak/ and is the path where the script lives
# out is the output
# oky is the success o failed exec command
function backup() {
exec("tar -cvf $sdir/$name $root/* --exclude='$sdir/$skip' ", $out, $oky);
}
backup();
if (!$oky) {
echo "$out: Backup Completed!";
} else {
echo "$out: Backup Not Completed!";
}
?>
Any help is appreciated!
$oky
and $out
are local variables. They are not set outside the function. $sdir
, $name
and $root
are not defined within the function.
Method 1 - Parameters:
function backup($sdir,$name,$root,$salt) {
exec("tar -cvf $sdir/$name $root/* --exclude='$sdir/$salt' ", $out, $oky);
return array("oky"=>$oky, "out"=>$out);
}
$result = backup($sdir, $name, $root, $salt);
if (!$result["oky"]) {
echo $result["out"].": Backup Completed!";
} else {
echo $result["out"].": Backup Not Completed!";
}
Method 2 - Don't use a function:
exec("tar -cvf $sdir/$name $root/* --exclude='$sdir/$salt' ", $out, $oky);
if (!$oky) {
echo "$out: Backup Completed!";
} else {
echo "$out: Backup Not Completed!";
}
Method 3 - Global variables:
function backup() {
global $sdir,$name,$root,$salt,$oky,$out;
exec("tar -cvf $sdir/$name $root/* --exclude='$sdir/$salt' ", $out, $oky);
}
backup();
if (!$oky) {
echo "$out: Backup Completed!";
} else {
echo "$out: Backup Not Completed!";
}
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