From b4925d78db28fdf9b51b2e75fe4dc6d9a01191ab Mon Sep 17 00:00:00 2001 From: Carsten Brandt Date: Wed, 1 May 2013 23:48:33 +0200 Subject: [PATCH] better documentation for php expressions related to issue yiisoft/yii#1921 Explain what a php expression is an refer to the php manual for more details. --- framework/caching/ExpressionDependency.php | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/framework/caching/ExpressionDependency.php b/framework/caching/ExpressionDependency.php index e13c962..303ccdc 100644 --- a/framework/caching/ExpressionDependency.php +++ b/framework/caching/ExpressionDependency.php @@ -14,13 +14,18 @@ namespace yii\caching; * The dependency is reported as unchanged if and only if the result of the expression is * the same as the one evaluated when storing the data to cache. * + * A PHP expression can be any PHP code that has a value. To learn more about what an expression is, + * please refer to the [php manual](http://www.php.net/manual/en/language.expressions.php). + * * @author Qiang Xue * @since 2.0 */ class ExpressionDependency extends Dependency { /** - * @var string the PHP expression whose result is used to determine the dependency. + * @var string the string representation of a PHP expression whose result is used to determine the dependency. + * A PHP expression can be any PHP code that has a value. To learn more about what an expression is, + * please refer to the [php manual](http://www.php.net/manual/en/language.expressions.php). */ public $expression;