Jupping

Sorry.! My English isn't good, I have project about web,my boss want to webboard and i know only creating PHP. before i create i ask my friend,possible if i create web board by PHP, He say "PHP have low security for web board,i think you should want to Joomla,phpbb,discuz.... for create web board cause they have high security" -create PHP : + what should i do when my website have been hacked. + How to create php for block hacking.(or for upgrade security my site). + I know only create standard PHP code. -Use Joomla,phpbb,SMF... : + my site have webboard about show painting(cartoon) and i'm looking for web templete(joomla,discuz) for support my design my friend tell me : Photo Gallery is good for your web site Can you help me about my problem Sorry again ,my English is not good (i can read but i don't know how to create)