Dev {Tricks}

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Artisan syntax error

Problem:

  • PHP Parse error: syntax error, unexpected ‘class’ (T_CLASS), expecting identifier (T_STRING) or variable (T_VARIABLE) or ‘{‘ or ‘$’ in …/artisan on line 31
  • $kernel = $app->make(Illuminate\Contracts\Console\Kernel::class);

Solution:

::class is only available from PHP 5.5 onward, So updating php version of the SERVER will solve the problem.

First check php version of your server with command line.

php -v

Note that phpinfo() may give different version that with the php -v

 

 

 

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Slick – Carousel you’ll ever need

Features

    • Fully responsive. Scales with its container.
    • Separate settings per breakpoint
    • Uses CSS3 when available. Fully functional when not.
    • Swipe enabled. Or disabled, if you prefer.
    • Desktop mouse dragging
    • Infinite looping.
    • Fully accessible with arrow key navigation
    • Add, remove, filter & unfilter slides
  • Autoplay, dots, arrows, callbacks, etc…

Demo link

Download

Adding RTL option

Just add the following css

.slick-slider .slick-track, .slick-slider .slick-list {
direction: ltr;
}

Responsive Slick

Add following lines to javascript.

 responsive: [
{
breakpoint: 1024,
settings: {
slidesToShow: 3,
slidesToScroll: 1,
}
},
{
breakpoint: 600,
settings: {
slidesToShow: 2,
slidesToScroll: 2
}
},
{
breakpoint: 480,
settings: {
slidesToShow: 1,
slidesToScroll: 1
}
}
// You can unslick at a given breakpoint now by adding:
// settings: "unslick"
// instead of a settings object
]

 

 

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Apache Server Status for 127.0.0.1 (via 127.0.0.1) Requests List

Apache Server Status Requests

  • done, streams: 0/1/1/0/0 (open/recv/resp/push/rst)
  • idle, streams: 0/1/1/0/0 (open/recv/resp/push/rst)
  • GET /xmlrpc.php HTTP/1.1
  • GET /robots.txt HTTP/1.1
  • POST /wp-login.php HTTP/1.1
  • HEAD / HTTP/1.1
  • GET / HTTP/1.0
  • GET / HTTP/1.1

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How to Stop XML-RPC Attack in WordPress

WordPress utilizes XML-RPC to remotely execute functions for example JetPack, WordPress mobile application etc.  But XMLRPC Attack made web server jam. In HTTP access log, we saw a lot of requests like this:

61.135.232.103 - - [11/Sep/2020:10:27:20 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
91.132.142.57 - - [11/Sep/2020:10:39:03 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.33.187.36 - - [11/Sep/2020:10:43:28 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"

You will also get “Error connecting to database” message when your WordPress site is down.

Solutions

We can secure server from XMLRPC attacks in several ways

  • We can add a HTTP directive to httpd.conf or .htaccess for denying all requests on /xmlrpc.php. 
    <files xmlrpc.php>
  Order allow,deny
  Deny from all
</files>

    If don’t have httpd.conf or .htaccess, we can simply rename the filename.

    • Where is httpd.conf? 
      /etc/httpd/conf/httpd.conf
    • DirectAdmin: File Editor
    • Webmin: Others > File Manager
  • Installing the Jetpack Plugin can block the XML-RPC requests with its “Protect” function.