Php-Quick Script That Can Backup A File You Are Working On

#!/usr/local/bin/php -Cq

<?php
###
# Version: 1.1
#
# Description: This file creates the directory bak unless you specify one, and then
#              copies the file you provide to that directory appending an ascending number.
#
# Usage: bakme [options] <file_to_backup> [directory_to_put_backup_file_in]
#
# Examples: file_to_backup=report.txt && directory_to_put_backup_file_in=backup_dir
#
# ---Backup report.txt to default directory---
# $ bakme report.txt
#
# ---Backup report.txt to your defined directory (backup_directory)---
#
# $ bakme report.txt backup_dir
#
# ---Backup report.txt to default directory and gzip the file---
# $ bakme -g report.txt
#
# ---Backup report.txt to your defined directory (backup_directory) and gzip the file---
# $ bakme -g report.txt backup_dir
###

$arg1 = $_SERVER['argv'][1]; #> your file to backup (or options)
$arg2 = $_SERVER['argv'][2]; #> directory to backup in [default is bak] or (your file to backup)
$arg3 = $_SERVER['argv'][3]; #> your directory to backup in
$options = '';

$gzip = '/bin/gzip';
$backup_file_extension = 'bak';
$default_backup_location = 'bak';

$eol = "\n";

define('FILE_APPEND', 1);
if(!function_exists("file_put_contents"))
{
        function file_put_contents($n, $d, $flag = false) {
                $mode = ($flag == FILE_APPEND || strtoupper($flag) == 'FILE_APPEND') ? 'a' : 'w';
                $f = @fopen($n, $mode);
                if ($f === false) {
                        return 0;
                } else {
                        if (is_array($d)) $d = implode($d);
                        $bytes_written = fwrite($f, $d);
                        fclose($f);
                        return $bytes_written;
                }
        }
}

if($arg1 != '' && $arg2 != '' && $arg3 != ''){
        $options = $arg1;
        $file = $arg2;
        $dir = $arg3;
}
elseif($arg1 != '' && $arg2 != '' && $arg3 == ''){
        if(eregi("-",$arg1)){
                $options = $arg1;
                $file = $arg2;
                $dir = $default_backup_location;
        }
        else{
                $file = $arg1;
                $dir = $arg2;
        }
}
elseif($arg1 != '' && $arg2 == '' && $arg3 == ''){
        $file = $arg1;
        $dir = $default_backup_location;
}
else{
        die("I don't know what to do with your input!");
}

if($options != ''){
        if(eregi("g",$options)){
                $zip = 'gzip';
        }
}

if(!file_exists($file)){
        die("Your file, {$file}, DNE" . $eol);
}

if(!file_exists($dir)){
  if(!mkdir($dir)){
    die("Couldn't make directory {$dir}" . $eol);
  }
}

$x = 1;
while(file_exists("{$dir}/{$file}.{$backup_file_extension}{$x}") || file_exists("{$dir}/{$file}.{$backup_file_extension}{$x}.gz")){
        $x += 1;
}

if(!file_exists("{$dir}/{$file}.{$backup_file_extension}{$x}")){
        if(copy("{$file}","{$dir}/{$file}.{$backup_file_extension}{$x}")){

                if($zip == 'gzip'){
                        exec("{$gzip} {$dir}/{$file}.{$backup_file_extension}{$x}");
                        $append_ext = '.gz';
                }
                else{
                        $append_ext = '';
                }

                if(!file_exists("{$dir}/.htaccess"))
                {
                        $htaccess = <<<eof
Order Deny, Allow
Deny from all
eof;

                        if(!file_put_contents("{$dir}/.htaccess",$htaccess))
                        {
                                print("Could not create {$dir}/.htaccess\n");
                        }

                        if(!chmod("{$dir}/.htaccess",0755))
                        {
                                print("Could not change mode of {$dir}/.htaccess");
                        }
                }

                print <<<eof
{$file} copied to {$dir}/{$file}.{$backup_file_extension}{$x}{$append_ext}

eof;
        }
        else{
                die("I couldn't not create your file {$dir}/{$file}.{$backup_file_extension}{$x}{$append_ext}" . $eol);
        }
}
?>