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Podręcznik PHP
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Zmienne i typy powiązanych rozszerzeń
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Obsługa zmiennych
Wstęp
Instalacja/Konfiguracja
Wymagania
Instalacja
Konfiguracja wykonawcza
Typy zasobów
Stałe predefiniowane
Variable handling Funkcje
boolval
— Pobiera wartość logiczną zmiennej
debug_zval_dump
— Dumps a string representation of an internal zend value to output
doubleval
— Alias dla floatval
empty
— Determine whether a variable is empty
floatval
— Pobiera wartość zmiennoprzecinkową zmiennej
get_defined_vars
— Zwraca tablicę wszystkich zdefiniowanych zmiennych
get_resource_type
— Zwraca typ zasobu
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_bool
— Finds out whether a variable is a boolean
is_callable
— Verify that the contents of a variable can be called as a function
is_countable
— Verify that the contents of a variable is a countable value
is_double
— Alias dla 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 dla is_int
is_iterable
— Verify that the contents of a variable is an iterable value
is_long
— Alias dla 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 dla 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
isset
— Determine if a variable is declared and is different than NULL
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
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