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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.
tags/2.0.0-beta
Carsten Brandt 12 years ago
parent
commit
b4925d78db
  1. 7
      framework/caching/ExpressionDependency.php

7
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 <qiang.xue@gmail.com>
* @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;

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