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   1  ---
   2  title: Generator strategies
   3  ---
   4  
   5  # Generator strategies
   6  
   7  ProxyManager allows you to generate classes based on generator strategies and a
   8  given `Zend\Code\Generator\ClassGenerator` as of
   9  the [interface of a generator strategy](https://github.com/Ocramius/ProxyManager/blob/master/src/ProxyManager/GeneratorStrategy/GeneratorStrategyInterface.php).
  10  
  11  Currently, 3 generator strategies are shipped with ProxyManager:
  12  
  13   * [`ProxyManager\GeneratorStrategy\BaseGeneratorStrategy`](https://github.com/Ocramius/ProxyManager/blob/master/src/ProxyManager/GeneratorStrategy/BaseGeneratorStrategy.php),
  14     which simply retrieves the string representation of the class from `ClassGenerator`
  15   * [`ProxyManager\GeneratorStrategy\EvaluatingGeneratorStrategy`](https://github.com/Ocramius/ProxyManager/blob/master/src/ProxyManager/GeneratorStrategy/EvaluatingGeneratorStrategy.php),
  16     which calls `eval()` upon the generated class code before returning it. This is useful in cases
  17     where you want to generate multiple classes at runtime
  18   * [`ProxyManager\GeneratorStrategy\FileWriterGeneratorStrategy`](https://github.com/Ocramius/ProxyManager/blob/master/src/ProxyManager/GeneratorStrategy/FileWriterGeneratorStrategy.php),
  19     which accepts a [`ProxyManager\FileLocator\FileLocatorInterface`](https://github.com/Ocramius/ProxyManager/blob/master/src/ProxyManager/FileLocator/FileLocatorInterface.php)
  20     instance as constructor parameter, and based on it, writes the generated class to a file before returning its code.