If a $ is a number

[NZ_Kiwis]

I want to write a code but i want to do a

if ($username == (a number)) {
this code 
} else {
this code
}

how would i see if $username is a number or not??

[Skull]

http://www.php.net/is_numeric

if(is_numeric($username)) {
 echo '$username is a number';
}else {
 echo '$username is not a number';
}

[laserlight]

is_numeric() is one way, but it really depends on your definition of a number. You might consider [man]ctype_digit/man and [man]ctype_xdigit/man as well.