qr code generator php

1It's worth adding that, in addition to the QR codes library posted by @abaumg, Google provides a QR Codes API QR Codes APImany thanks to @Toukakoukan for the link update.
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3To use this , basically:
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5https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8
6300x300 is the size of the QR image you want to generate,
7the chl is the url-encoded string you want to change into a QR code, and
8the choe is the (optional) encoding.
9The link, above, gives more detail, but to use it just have the src of an image point to the manipulated value, like so:
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11<img src="https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8" title="Link to Google.com" />