PHP JSON- funksies
PHP JSON Inleiding
Die JSON-uitbreiding implementeer die JavaScript Object Notation-data-uitruilformaat.
In PHP 5 word die dekodering hanteer deur 'n ontleder gebaseer op die JSON_checker deur Douglas Crockford.
PHP 7 het 'n nuwe en verbeterde ontleder wat spesifiek vir PHP geskryf is en onder die PHP-lisensie gelisensieer is.
Installasie
Vanaf PHP 5.2.0 is die JSON-funksies by verstek geaktiveer. Daar is geen installasie nodig om hierdie funksies te gebruik nie.
PHP JSON-funksies
| Function | Description |
|---|---|
| json_decode() | Decodes a JSON string |
| json_encode() | Encode a value to JSON format |
| json_last_error() | Returns the last error occurred |
| json_last_error_msg() | Returns the error string of the last json_encode() or json_decode() call |
PHP Vooraf gedefinieerde JSON konstante
| Constant | Type | Description |
|---|---|---|
| JSON_ERROR_NONE | Integer | No error has occurred |
| JSON_ERROR_DEPTH | Integer | Maximum stack depth has been exceeded |
| JSON_ERROR_STATE_MISMATCH | Integer | Invalid/Malformed JSON |
| JSON_ERROR_CTRL_CHAR | Integer | Control character error |
| JSON_ERROR_SYNTAX | Integer | Syntax error |
| JSON_ERROR_UTF8 | Integer | Malformed UTF-8 characters. PHP 5.3 |
| JSON_ERROR_RECURSION | Integer | Invalid recursive reference values. PHP 5.5 |
| JSON_ERROR_INF_OR_NAN | Integer | Invalid NAN or INF values. PHP 5.5 |
| JSON_ERROR_UNSUPPORTED_TYPE | Integer | Invalid type. PHP 5.5 |
| JSON_ERROR_INVALID_PROPERTY_NAME | Integer | Invalid property name. PHP 7.0 |
| JSON_ERROR_UTF16 | Integer | Malformed UTF-16 characters. PHP 7.0 |
| JSON_BIGINT_AS_STRING | Integer | |
| JSON_OBJECT_AS_ARRAY | Integer | |
| JSON_HEX_TAG | Integer | |
| JSON_HEX_AMP | Integer | |
| JSON_HEX_APOS | Integer | |
| JSON_HEX_QUOT | Integer | |
| JSON_FORCE_OBJECT | Integer | |
| JSON_NUMERIC_CHECK | Integer | |
| JSON_PRETTY_PRINT | Integer | |
| JSON_UNESCAPED_SLASHES | Integer | |
| JSON_PARTIAL_OUTPUT_ON_ERROR | Integer | |
| JSON_PRESERVE_ZERO_FRACTION | Integer | |
| JSON_UNESCAPED_LINE_TERMINATORS | Integer | |
| JSON_INVALID_UTF8_IGNORE | Integer | |
| JSON_INVALID_UTF8_SUBSTITUTE | Integer | |
| JSON_THROWN_ON_ERROR | Integer |