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51 lines
1.7 KiB
Markdown
51 lines
1.7 KiB
Markdown
# QRStringJSON
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[Class `QRStringJSON`](https://github.com/chillerlan/php-qrcode/blob/main/src/Output/QRStringJSON.php):
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[JSON](https://developer.mozilla.org/en-US/docs/Glossary/JSON) output.
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## Example
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```php
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$options = new QROptions;
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$options->outputType = QROutputInterface::STRING_JSON;
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$options->jsonFlags = JSON_THROW_ON_ERROR|JSON_UNESCAPED_SLASHES;
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header('Content-type: application/json');
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$data = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
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echo new QRCode($options)->render($data); // -> JSON string
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```
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The associated [JSON schema](https://json-schema.org/specification) can be found over at GitHub: [`qrcode.schema.json`](https://github.com/chillerlan/php-qrcode/blob/main/src/Output/qrcode.schema.json)
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## Previous functionality
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The previous versions of `php-qrcode` (v5 and earlier) just dumped an array representation of the internal matrix,
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which is equivalent to the following:
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```php
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$matrix = new QRCode($options)->getQRMatrix(); // -> QRMatrix instance
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// retrieve the internal matrix as an array of booleans
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$json = json_encode($matrix->getMatrix(true), $jsonFlags);
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```
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## Additional methods
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| method | return | description |
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|---------------------------------------------------|---------------|-------------------------------------------|
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| (protected) `row(int $y, array $row)` | `array\|null` | creates a DOM element for a matrix row |
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| (protected) `module(int $x, int $y, int $M_TYPE)` | `array\|null` | creates a DOM element for a single module |
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## Options that affect this class
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| property | type |
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|--------------|-------|
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| `$jsonFlags` | `int` |
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