Ziumin questions

Ziumin answers

• What does the \x1a characters mean
• Passing "null" encryption from parameters.ini and using it in config.yml
• What is the correct way of handling errors and warnings on filesystem functions in PHP?
• Change locale multiple times in symfony command
• Optimizing array merge operation
• Log request and response with Event Listener in Symfony2
• Symfony and Twig: How to display a confirmation dialog
• Separating business logic from PHP Doctrine 2
• Form validation ignores empty value
• How do I use the cascade option in Symfony2 Doctrine?