repair()

Fix malformed JSON using a repair flag bitmask.

Signature

JsonFast::repair(
    string $json,
    ?int $flags = REPAIR_ALL,
    ?int $output = OUTPUT_ARRAY
): mixed

Parameters

Name	Type	Default	Description
$json	string	—	Malformed or non-standard JSON
$flags	?int	REPAIR_ALL	Bitmask of REPAIR_* constants
$output	?int	OUTPUT_ARRAY	Output mode

What it fixes

Flag	Typical source
REPAIR_BOM	Files saved with UTF-8 BOM
REPAIR_JSONP	callback({...}) wrappers
REPAIR_COMMENTS	// and /* */ in config exports
REPAIR_TRAILING_COMMAS	JavaScript-style trailing commas
REPAIR_DOUBLE_ENCODED	JSON stored as a string inside JSON
REPAIR_UNQUOTED_STRINGS	name: Allan style values
REPAIR_SINGLE_QUOTES	Single-quoted strings
REPAIR_UNQUOTED_KEYS	{key: 1} style keys

Use analyse() to discover which flags apply before calling repair().

Examples

Full repair:

$broken = <<<'JSON'
{
    // user profile
    "name": Allan,
    "active": true,
}
JSON;

$fixed = JsonFast::repair($broken, JsonFast::REPAIR_ALL, JsonFast::OUTPUT_STRING);

Targeted repair (from analyse):

$flags = JsonFast::REPAIR_COMMENTS | JsonFast::REPAIR_UNQUOTED_STRINGS;
$fixed = JsonFast::repair($broken, $flags);

Strip JSONP only:

$clean = JsonFast::repair(
    'handleResponse({"ok":true})',
    JsonFast::REPAIR_JSONP,
    JsonFast::OUTPUT_STRING
);

Related

• analyse() — suggested flags
• unwrap() — clean double-encoding without other syntax fixes
• minify() — parse already-valid JSON