regex for only vowels

[Good2CU]

eregi("[^aeiuo]", $value)

I want to return true if $value contains no vowels. I suspect this returns true if there is at least 1 non-vowel.

Thanks

[laserlight]

More like:

preg_match('/^[^aeiou]*$/i', $value) == 1

[NogDog]

if(preg_match('/^[^aeiou]*$/i', $value))
{
   // it contains no vowels
}
// ...or...
if( ! preg_match('/[aeiou]/i' $value))
{
   // it contains no vowels
}

[Weedpacket]

And just to show that regular expressions aren't necessary:

 if(strcspn($value, 'aeiouAEIOU')==strlen($value))
{
  // it contains no vowels.
}

[NogDog]

And just because I'm a trouble-maker, what if the string is "cyst" or "why"? :p

[Weedpacket]

Or "cwm".