[TYPO3] Determine if an extension is already installed

[Livius Agrippa]

Hi Tobias,

Thank you very much for your help.
It works very well.

Kind regards,
Livius

> Livius Agrippa schrieb:
>>  Hi,
>>
>> I create an extension and I want to verify in my extension if kb_md5fepw
>>  extension is already installed. I saw this in an old topic but I cannot
>> find anymore that message.
>>
>> Best regards,
>> Livius
> 
> Hi Livius,
> 
> t3lib_extMgm::isLoaded('kb_md5fepw')
> 
> this return true or false.
> 
> 
> Best regards
> Tobias