FORMATTER is Yii application COMPONENT that is used format view data in readable format for users. By default the formatter is implemented by Yiii18nFormatter which provides a set of methods to format data as date/time, numbers, currencies, and other commonly used formats. You can use the formatter LIKE the following,

$formatter = Yii::$app->formatter;

// output: January 1, 2014

echo $formatter->asDate('2014-01-01', 'long');

 // output: 12.50%

echo $formatter->asPercent(0.125, 2);

 // output: cebe@example.com

echo $formatter->asEmail('cebe@example.com'); 

// output: Yes

echo $formatter->asBoolean(true); 

// it also handles display of null VALUES:

// output: (not set)

echo $formatter->asDate(null);

Formatter is Yii application component that is used format view data in readable format for users. By default the formatter is implemented by Yiii18nFormatter which provides a set of methods to format data as date/time, numbers, currencies, and other commonly used formats. You can use the formatter like the following,

$formatter = Yii::$app->formatter;

// output: January 1, 2014

echo $formatter->asDate('2014-01-01', 'long');

 // output: 12.50%

echo $formatter->asPercent(0.125, 2);

 // output: cebe@example.com

echo $formatter->asEmail('cebe@example.com'); 

// output: Yes

echo $formatter->asBoolean(true); 

// it also handles display of null values:

// output: (not set)

echo $formatter->asDate(null);