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Json Helper

Json helper provides a set of static methods for encoding and decoding JSON. It handles encoding errors and the [[yii\helpers\Json::encode()]] method will not encode a JavaScript expression that is represented in terms of a [[yii\web\JsExpression]] object. By default, encoding is done with the JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE options. Please see PHP:json_encode for more information.

Pretty Print

By default the [[yii\helpers\Json::encode()]] method will output unformatted JSON (e.g. without whitespaces). To make it more readable for humans you can turn on "pretty printing".

Note: Pretty Print can useful for debugging during development but is not recommended in a production environment.

To enable pretty print in a single instance you can specify it as an option. E.g.

$data = ['a' => 1, 'b' => 2];

You can also enable pretty printing of the JSON helper globally. For example in your config for or index.php: `php yii\helpers\Json::$prettyPrint = YII_DEBUG; // use "pretty" output in debug mode `

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