php find wrong json element

Question

I have a string in json form which I decode to a php variable. But if the json is not a valid json string, the decode gives a NULL.

I'm looking for a script which can tell me, on which part the decode will fail.

For example I have the following string:

{ "error": "OK", "pathlist": [ { "path": "datu5" "pathId": "10100010" }, { "path": "datum", "pathId": "10100011" } ] }

Then I want to show that the error is an error near line 4: For example:

Error: Parse error on line 4: ... "path" : "datu5" "pathId" : "10100010 ----------------------^ Expecting 'EOF', '}', ':', ',', ']', got 'STRING'

I there such a php script?

You forgot coma "path": "datu5", "pathId": "10100010" batwan datu5 and pathId — Naumov
– Naumov, Commented Feb 29, 2016 at 14:46

brevis · Accepted Answer · 2016-02-29 14:49:35Z

1

Try this lib: https://github.com/Seldaek/jsonlint

Usage

use Seld\JsonLint\JsonParser;

$parser = new JsonParser();

// returns null if it's valid json, or a ParsingException object.
$parser->lint($json);

// Call getMessage() on the exception object to get
// a well formatted error message error like this

// Parse error on line 2:
// ... "key": "value"    "numbers": [1, 2, 3]
// ----------------------^
// Expected one of: 'EOF', '}', ':', ',', ']'

// Call getDetails() on the exception to get more info.

// returns parsed json, like json_decode() does, but slower, throws
// exceptions on failure.
$parser->parse($json);

answered Feb 29, 2016 at 14:49

brevis

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