PHP Manual
PrevNext

LXXXVI. Variable Functions

Table of Contents
doubleval -- Alias of floatval()
empty -- Determine whether a variable is set
floatval -- Get float value of a variable
gettype -- Get the type of a variable
get_defined_vars --  Returns an array of all defined variables
get_resource_type --  Returns the resource type
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 -- Alias of is_float()
is_float -- Finds whether a variable is a float
is_int -- Find whether a variable is an integer
is_integer -- Alias of is_int()
is_long -- Alias of is_int()
is_null --  Finds whether a variable is NULL
is_numeric --  Finds whether a variable is a number or a numeric string
is_object -- Finds whether a variable is an object
is_real -- Alias of is_float()
is_resource --  Finds whether a variable is a resource
is_scalar --  Finds whether a variable is a scalar
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
PrevHomeNext
urlencodeUpdoubleval