finding multiple substrings in a string

[AN-net]

how would i go about finding multiple substrings in a string. should i use strpos but how do i more than one? should i use a switch?

i.e.:

PHP Code:

switch($foo)
{
 case strpos($foo, 'bar'):
  do whatever
  break;
 case strpos($foo, 'foo');
  do whatever
  break;
} 

any suggestions

[Paul M]

Why not just an IF for each one ?

PHP Code:

if (strpos($foo, 'bar'))
{ 
  do whatever 
} 
if (strpos($foo, 'foo'))
{ 
  do whatever 
}