======is_string======
WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Check if a variable is a string
====Description====
int
is_string (
mixed
$variable
)
Check to see if a variable or value is of type string
====Parameter====
$variable: Variable or expression to be evaluated
====Return Values====
Integer: 1 (true) if a string, 0 (false) if not a string
====Examples====
$x=1.0;
print(is_string($x)); // outputs 0, $x is a float
$y="1.0";
print(is_string($y)); // outputs 1, $y is a string
$z=''
print(is_string($z)); // outputs 1, $z is an empty string
?>
====Notes====
This function checks ONLY the type of the variable, not the data that it holds!
====See Also====
[[is_int()]] - Check if a variable is an integer
[[is_float()]] - Check if a variable is a float
[[is_numeric()]] - Check if a value is numeric (int, float or numeric string)
[[is_array()]] - Check if a variable is an array
[[isset()]] - Check if a variable exists
[[uphp:variables|uPHP Variable Types and Limits]]