QrCodeWriter.writeString

Writes QR code and returns it as string.

Content is a string which *should* be encoded in UTF-8, in case there are non ASCII-characters present.

@param string $content @param string $encoding @param integer $ecLevel @return string @throws Exception\InvalidArgumentException

class QrCodeWriter
string
writeString
(
string content
,,
ErrorCorrectionLevel ecLevel = ErrorCorrectionLevel.L
)

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