tryphp_func_var_is_double.php:
<!DOCTYPE html> <html> <body> <?php $a = 32; echo "a is " . is_double($a) . "<br>"; $b = 0; echo "b is " . is_double($b) . "<br>"; $c = 32.5; echo "c is " . is_double($c) . "<br>"; $d = "32"; echo "d is " . is_double($d) . "<br>"; $e = true; echo "e is " . is_double($e) . "<br>"; $f = "null"; echo "f is " . is_double($f) . "<br>"; $g = 1.e3; echo "g is " . is_double($g) . "<br>"; ?> </body> </html>
a is
b is
c is 1
d is
e is
f is
g is 1