Talk:JFactory/getCache

// Define a class to contain the computationally-expensive method.
class expensiveClass {
 
  function expensiveMethod ( $signature ) {
 
    static $instances;
 
    if (!isset( $instances )) $instances = array();
 
    if (empty( $instances[$signature] )) {
 
      // Something that is resource-intensive to produce, here simulated
      // by calculating the MD5 hash of the signature.
 
      $instances[$signature] = md5( $signature );
      echo 'Cache miss';
 
    } else {
 
      echo 'Cache hit ';
 
    }
 
    return $instances[$signature];
  }
}
 
echo ' : ' . expensiveClass::expensiveMethod('abc') . "\n";
echo ' : ' . expensiveClass::expensiveMethod('efg') . "\n";
echo ' : ' . expensiveClass::expensiveMethod('abc') . "\n";
echo ' : ' . expensiveClass::expensiveMethod('hij') . "\n";
echo ' : ' . expensiveClass::expensiveMethod('klm') . "\n";
echo ' : ' . expensiveClass::expensiveMethod('hij') . "\n";