How to check the current variable type in PHP_PHP tutorial

PHP method to view the current variable type

is_array

is_bool

is_callable

is_double

is_float

is_int

is_integer

is_long

is_null

is_numeric

is_object

is_real

is_resource

is_scalar

is_string

Liezi:

$sum=6;

echo ( is_string($sum) ? 'true' : 'false');

?>

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