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Update README.md
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README.md
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README.md
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* Output to PNG, GIF, JPEG, or SVG.
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* Generates UPC-A, UPC-E, EAN-13, EAN-8, Code 39, Code 93, Code 128, Codabar, ITF, QR Code, and Data Matrix.
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Use from a PHP script:
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### Use directly as a PHP script with GET or POST:
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```
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barcode.php?f={format}&s={symbology}&d={data}&{options}
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```
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e.g.
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```
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barcode.php?f=png&s=upc-e&d=06543217
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barcode.php?f=svg&s=qr&d=HELLO%20WORLD&sf=8&ms=r&md=0.8
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```
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**When using this method, you must escape non-alphanumeric characters with URL encoding, for example `%26` for `&` or `%2F` for `?`.**
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### Or use as a library from another PHP script:
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```
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include 'barcode.php';
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@ -37,20 +52,9 @@ $svg = $generator->render_svg($symbology, $data, $options);
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file_put_contents($filename, $svg);
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```
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Use with GET or POST:
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**When using this method, you must NOT use URL encoding.**
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```
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barcode.php?f={format}&s={symbology}&d={data}&{options}
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```
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e.g.
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```
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barcode.php?f=png&s=upc-e&d=06543217
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barcode.php?f=svg&s=qr&d=HELLO%20WORLD&sf=8&ms=r&md=0.8
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```
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#### Options:
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### Options:
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`f` - Format. One of:
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```
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