(PHP 7 >= 7.4.0, PHP 8)
FFI::cast — Performs a C type cast
$type
, FFI\CData|int|float|bool|null &$ptr
) : FFI\CData|null$type
, FFI\CData|int|float|bool|null &$ptr
) : FFI\CData|null
FFI::cast() creates a new FFI\CData
object, that references the same C data structure, but is associated with a different type.
The resulting object does not own the C data, and the source ptr
must survive the result. The C type may be specified as a string with any
valid C type declaration or as FFI\CType object, created before.
If this method is called statically, it must only use predefined C type names (e.g.
int, char, etc.); if the method is called as
instance method, any type declared for the instance is allowed.
typeA valid C declaration as string, or an instance of FFI\CType which has already been created.
ptrThe handle of the pointer to a C data structure.
Returns the freshly created FFI\CData object.