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27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
Json Helper
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==========
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Json helper provides a set of static methods for encoding and decoding JSON.
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It handles encoding errors and the `[[yii\helpers\Json::encode()]]` method will not encode a JavaScript expression that is represented in
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terms of a `[[yii\web\JsExpression]]` object.
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By default, encoding is done with the `JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE` options.
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Please see [PHP:json_encode](https://www.php.net/manual/en/function.json-encode.php) for more information.
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## Pretty Print <span id="pretty-print"></span>
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By default the `[[yii\helpers\Json::encode()]]` method will output unformatted JSON (e.g. without whitespaces).
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To make it more readable for humans you can turn on "pretty printing".
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> Note: Pretty Print can useful for debugging during development but is not recommended in a production environment.
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To enable pretty print in a single instance you can specify it as an option. E.g.
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```php
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$data = ['a' => 1, 'b' => 2];
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$json = yii\helpers\Json::encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
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```
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You can also enable pretty printing of the JSON helper globally. For example in your config for or index.php:
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```php
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yii\helpers\Json::$prettyPrint = YII_DEBUG; // use "pretty" output in debug mode
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```
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