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better documentation for php expressions

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related to issue yiisoft/yii#1921
Explain what a php expression is an refer to the php manual for more
details.
This commit is contained in:
Carsten Brandt
2013-05-01 23:48:33 +02:00
parent b869f4e72e
commit b4925d78db
1 changed files with 6 additions and 1 deletions
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7
framework/caching/ExpressionDependency.php
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@ -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;