Predefined Constants
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
The following constants indicate the type of error returned by
json_last_error().
-
JSON_ERROR_NONE
(integer)
-
No error has occurred.
Available since PHP 5.3.0.
-
JSON_ERROR_DEPTH
(integer)
-
The maximum stack depth has been exceeded.
Available since PHP 5.3.0.
-
JSON_ERROR_STATE_MISMATCH
(integer)
-
Occurs with underflow or with the modes mismatch.
Available since PHP 5.3.0.
-
JSON_ERROR_CTRL_CHAR
(integer)
-
Control character error, possibly incorrectly encoded.
Available since PHP 5.3.0.
-
JSON_ERROR_SYNTAX
(integer)
-
Syntax error.
Available since PHP 5.3.0.
-
JSON_ERROR_UTF8
(integer)
-
Malformed UTF-8 characters, possibly incorrectly encoded. This
constant is available as of PHP 5.3.1.
The following constants can be combined to form options for
json_encode().
-
JSON_HEX_TAG
(integer)
-
All < and > are converted to \u003C and \u003E.
Available since PHP 5.3.0.
-
JSON_HEX_AMP
(integer)
-
All &s are converted to \u0026.
Available since PHP 5.3.0.
-
JSON_HEX_APOS
(integer)
-
All ' are converted to \u0027.
Available since PHP 5.3.0.
-
JSON_HEX_QUOT
(integer)
-
All " are converted to \u0022.
Available since PHP 5.3.0.
-
JSON_FORCE_OBJECT
(integer)
-
Outputs an object rather than an array when a non-associative array is
used. Especially useful when the recipient of the output is expecting
an object and the array is empty.
Available since PHP 5.3.0.
-
JSON_NUMERIC_CHECK
(integer)
-
Encodes numeric strings as numbers.
Available since PHP 5.3.3.
-
JSON_BIGINT_AS_STRING
(integer)
-
Encodes large integers as their original string value.
Available since PHP 5.4.0.
-
JSON_PRETTY_PRINT
(integer)
-
Use whitespace in returned data to format it.
Available since PHP 5.4.0.
-
JSON_UNESCAPED_SLASHES
(integer)
-
Don't escape /.
Available since PHP 5.4.0.
-
JSON_UNESCAPED_UNICODE
(integer)
-
Encode multibyte Unicode characters literally (default is to escape as \uXXXX).
Available since PHP 5.4.0.