Константи, описані нижче — визначені цим розширенням, тож доступні, коли розширення скомпільовано як частина PHP або динамічно підключене під час виконання.
SIMDJSON_ERR_CAPACITY
(int)
SIMDJSON_ERR_TAPE_ERROR
(int)
SIMDJSON_ERR_DEPTH_ERROR
(int)
SIMDJSON_ERR_STRING_ERROR
(int)
SIMDJSON_ERR_T_ATOM_ERROR
(int)
SIMDJSON_ERR_F_ATOM_ERROR
(int)
SIMDJSON_ERR_N_ATOM_ERROR
(int)
SIMDJSON_ERR_NUMBER_ERROR
(int)
SIMDJSON_ERR_UTF8_ERROR
(int)
SIMDJSON_ERR_UNINITIALIZED
(int)
SIMDJSON_ERR_EMPTY
(int)
SIMDJSON_ERR_UNESCAPED_CHARS
(int)
SIMDJSON_ERR_UNCLOSED_STRING
(int)
SIMDJSON_ERR_UNSUPPORTED_ARCHITECTURE
(int)
SIMDJSON_ERR_INCORRECT_TYPE
(int)
SIMDJSON_ERR_NUMBER_OUT_OF_RANGE
(int)
SIMDJSON_ERR_INDEX_OUT_OF_BOUNDS
(int)
SIMDJSON_ERR_NO_SUCH_FIELD
(int)
SIMDJSON_ERR_IO_ERROR
(int)
SIMDJSON_ERR_INVALID_JSON_POINTER
(int)
SIMDJSON_ERR_INVALID_URI_FRAGMENT
(int)
SIMDJSON_ERR_UNEXPECTED_ERROR
(int)
SIMDJSON_ERR_PARSER_IN_USE
(int)
SIMDJSON_ERR_OUT_OF_ORDER_ITERATION
(int)
SIMDJSON_ERR_INSUFFICIENT_PADDING
(int)
SIMDJSON_ERR_INCOMPLETE_ARRAY_OR_OBJECT
(int)
SIMDJSON_ERR_SCALAR_DOCUMENT_AS_VALUE
(int)
SIMDJSON_ERR_OUT_OF_BOUNDS
(int)
SIMDJSON_ERR_TRAILING_CONTENT
(int)
SIMDJSON_ERR_KEY_COUNT_NOT_COUNTABLE
(int)
SIMDJSON_ERR_INVALID_PROPERTY
(int)