The first step: landing official website GitHub search qr -image. Click -> the instructions to install qr-image library
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Step: mounting qr-image library
[PHP]
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npm install qr-image
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Successful installation tips are as follows :( version numbers may be different, the default date)
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The third step: write the template code
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Step four: writing server code
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renderings as follows:
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More technical information may concern: gzitcast