Fixed link, sorry about that, let a domain expire
Merge pull request #449 from philipobenito/patch-1

Fixed link, sorry about that, let a domain expire
* add opcache to bytecode cache list
Merge pull request #452 from maglnet/bytecode-cache

add opcache to bytecode cache list
Grammar: that -> this
Fixing tabbing (spacing) of PDO connection.

Just so it looks as clean as it should.
Merge pull request #455 from cballou/patch-1

Fixing tabbing (spacing) of PDO connection.
Merge pull request #454 from rhynodesigns/patch-1

Grammar: that -> this
Fix missing PHP closing tag.
Merge pull request #456 from nakadai/patch-1

Fix missing PHP closing tag.