how to verify if a number contain float

[RickyD77]

i just want to know how to detect if a number contain the dot like

$number=16/4

if ($number contain dot){
//do this
}

thx

[wilsonodk]

[man]is_float()[/man]

//with code
if (is_float($number)) {
  // It is a float
} else {
  // It isn't 
}

[RickyD77]

nice

thx