PHP Manual
FFI
Performs a C type cast

FFI::cast

(PHP 7 >= 7.4.0)

FFI::cast — Performs a C type cast

说明

public static FFI::cast ( mixed $type , FFI\CData &$ptr ) : FFI\CData

public FFI::cast ( mixed $type , FFI\CData &$ptr ) : FFI\CData

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.

参数

type: A valid C declaration as string, or an instance of FFI\CType which has already been created.
ptr: The handle of the pointer to a C data structure.

返回值

Returns the freshly created FFI\CData object.

php ffi c type handles php ffi main interface to c code and data php domdocument performs relaxng validation on the document php domimplementation creates a domdocument object of the specified type with its document element php ffi dynamically constructs a new c array type php ffi performs a c type cast php ffi creates an ffi ctype object from a c declaration php cubrid 函数 get the number of elements in collection type column using oid php pdf 函数 start glyph definition for type 3 font php pdf 函数 get value of pcos path with type number or boolean php gmagick gets the potential image type php hyperwave api 函数 inserts a new object of type collection php opcode descriptions and examples cast php intldateformatter sets the calendar type used by the formatter php mongodb driver cursor sets a type map to use for bson unserialization php sdo 函数 get the type of change made to an sdo dataobject php sdo 函数 get the sdo model type which contains this property php sdo 函数 get an sdo model property of the type php splfileinfo gets file type php uconverter get the source convertor type