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Variable handling Functions

Variable handling Functions

debug_zval_dump — Dumps a string representation of an internal zend value to output
doubleval — Alias of floatval
empty — Determine whether a variable is empty
floatval — Get float value of a variable
get_defined_vars — Returns an array of all defined variables
get_resource_type — Returns the resource type
gettype — Get the type of a variable
import_request_variables — Import GET/POST/Cookie variables into the global scope
intval — Get the integer value of a variable
is_array — Finds whether a variable is an array
is_binary — Finds whether a variable is a native binary string
is_bool — Finds out whether a variable is a boolean
is_buffer — Finds whether a variable is a native unicode or binary string
is_callable — Verify that the contents of a variable can be called as a function
is_double — Alias of is_float
is_float — Finds whether the type of a variable is float
is_int — Find whether the type of a variable is 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 — Find whether the type of a variable is string
is_unicode — Finds whether a variable is a unicode 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
var_export — Outputs or returns a parsable string representation of a variable