| public __construct ( array $elements = [], string $boundary = null ) | ||
| $elements | array | Array of associative arrays, each containing a required "name" key mapping to the form field, name, a required "contents" key mapping to a StreamInterface/resource/string, an optional "headers" associative array of custom headers, and an optional "filename" key mapping to a string to send as the filename in the part. |
| $boundary | string | You can optionally provide a specific boundary |
public function __construct(array $elements = [], $boundary = null)
{
$this->boundary = $boundary ?: uniqid();
$this->stream = $this->createStream($elements);
}