iterators.md

<< Services

Iterators

CsvIterator

Iterates .csv file.

__construct($fileName)

• $fileName - string, path to .csv file;

parseColumns($columns)

Get csv line as associative array.

• $columns - array with csv file's columns;

getGenerator()

Return iterable object.

Example:

$csv = new \RonasIT\Support\Iterators\CsvIterator('/tmp/1.csv');
$csv->parseColumns(['id', 'name']);

foreach ($csv->getGenerator() as $line) {
    dump($line);
}

//['order_index' => '1', 'name' => 'first']
//['order_index' => '2', 'name' => 'second']
//['order_index' => '3', 'name' => 'third']

DBIterator

Iterate results of the database query via chunk logic.

__construct($query, $itemsPerPage)

• $query - QueryBuilder object;
• $itemsPerPage - integer, chunk size.

$query = \App\Models\Category::orderBy('created_at', 'DESC');

foreach($iterator->getGenerator() as $category) {
   dump($category);
}

//['id' => 1, 'name' => 'first', 'created_at' => '2018-01-23 07:20:06']
//['id' => 5, 'name' => 'second', 'created_at' => '2018-01-23 07:20:06']

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