Undefined offset: 0 in filesystemMapIdsToPaths(...)

[syntaxseed]

I am getting this error:

PHP Notice:  Undefined offset: 0 in /home/.../vendor/teamtnt/tntsearch/src/TNTSearch.php on line 408

The error happens at the call of $tnt->search(...) in the following example, even though I do get results.

// TNT Search

$indexName = 'test.index';
$createIndex = true;
$tntConfig = [
	    "driver"    => 'filesystem',
	    "location"  => __DIR__.'/tntsearch/dummysource/',
	    "extension" => "txt",
	    'storage'   => __DIR__.'/tntsearch/indexes/'
	];

$tnt = new TNTSearch;
$tnt->loadConfig($tntConfig);

if( $createIndex ){

	// Creating a NEW index. Empty old one first:
	if (file_exists($tnt->config['storage'].$indexName)) {
	    unlink($tnt->config['storage'].$indexName);
	    touch($tnt->config['storage'].$indexName);
	}

	$indexer = $tnt->createIndex($indexName);
	$indexer->run();

	$indexer->insert(['id' => 0, 'content' => 'new awesome article about php']);
	$indexer->insert(['id' => 1, 'content' => 'another article about php']);
	$indexer->insert(['id' => 2, 'content' => 'read this one because it is cool.']);
	$indexer->insert(['id' => 3, 'content' => 'some stuff about interesting things']);
}

$tnt->selectIndex($indexName);
$results = $tnt->search('article', 4);

var_dump($results);

Running this code gives the following correct output (so it is working):

array(2) {
  [0]=>
  NULL
  [1]=>
  NULL
}

[akizor]

I had the same problem, but found out that it was caused by uneven number of fields when inserting data. Make sure your array has the same keys for each insert.

[syntaxseed]

Good thought @akizor ... but my inserts in the sample code above are identical.

[syntaxseed]

Still getting this error in latest 2.1 version.

[syntaxseed]

In the src/TNTSearch.php file, this function:

public function filesystemMapIdsToPaths($docs)

Doesn't handle the case when $index does not exist in $res.