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ksef-php-client
PHP client for KSeF, Poland's national e-invoicing API.
What it does
PHP client for KSeF v2, Poland's national e-invoice system: submit invoices online, in batch or async, download and query them, manage permissions and certificates and fetch the UPO, PDF and QR codes. Needs PHP 8.4+ and a PSR-18 HTTP client; authenticates with a KSeF token, a .p12 certificate or an XAdES signature, on test, demo or production. MIT; invoice XML is validated against XSD schemas.
Where it fits on the map
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