Fairly simple regex question

[Inigo]

Hi Guys. This should- hopefully- be a pretty simple question for someone with regex experience to answer. I've been reading all the regex guides and tried various things but none have worked and I'm starting to get a headache. I've decided to just pitch the question here.

 

How do I test if a string contains ONLY a certain character- but could be one or more instances of that character. In this case it's a comma. So:

 

','          -> Would return TRUE

',,,'        -> Would return TRUE

',,,,,,,'    -> Would return TRUE

 

',,,hello,' -> Would return FALSE

'hi,,,'      -> Would return FALSE

 

 

Thanks in advance!

 

 

[sasa]

if(!preg_match('/[^,]/', $string)) echo 'TRUE'; else echo 'FALSE';

[Inigo]

NICE. Thanks mate.