Oleg questions

Oleg answers

• Change document root using .htaccess on wamp
• How to remove all undefined keys from a javascript array (hopefully when creating the array?)
• How do I get the most recent comments of Facebook?
• Yii2 ajax bad request (#400)
• Getting bad request (#400) on Ajax calls using Yii 2
• AjaxSetup never execute the success function
• Telegram does not escape some markdown characters
• Multiple file upload doesn't work in Safari 6.1 above, unless web inspector open
• Facebook Access Tokens - Server-Side Authentication
• PHP json_decode integers and floats to string