LXXXVII. Variable Functions

차례
doubleval -- Get double value of a variable
empty -- Determine whether a variable is set
gettype -- Get the type of a variable
intval -- Get integer value of a variable
is_array -- Finds whether a variable is an array
is_bool --  Finds out whether a variable is a boolean
is_double -- Finds whether a variable is a double
is_float -- Finds whether a variable is a float
is_int -- Find whether a variable is an integer
is_integer -- Find whether a variable is an integer
is_long -- Finds whether a variable is an integer
is_numeric --  Finds whether a variable is a number or a numeric string
is_object -- Finds whether a variable is an object
is_real -- Finds whether a variable is a real
is_resource --  Finds whether a variable is a resource
is_string -- Finds whether a variable is a string
isset -- Determine whether a variable is set
print_r --  Prints human-readable information about a variable
serialize --  Generates a storable representation of a value
settype -- Set the type of a variable
strval -- Get string value of a variable
unserialize --  Creates a PHP value from a stored representation
unset -- Unset a given variable
var_dump -- Dumps information about a variable