Viewing file:  Finance_FunctionParameters.php (1.35 KB) -rw-rw-rw-
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<?php
/**
* Singleton class to preserve given values of other variables in the callback functions
*/
class Math_Finance_FunctionParameters
{
var $parameters = array();
/**
* Constructor. Should be private, so used little hack.
*
* @param bool Whether constructor has been called from a method of the class
* @param array Parameters (variables values of the function) to be preserved
* @access private
*/
function Math_Finance_FunctionParameters($called_from_get_instance = False, $parameters = array())
{
// PHP4 hack
if (!$called_from_get_instance)
trigger_error("Cannot instantiate Math_Finance_FunctionParameters class directly (It's a Singleton)", E_USER_ERROR);
foreach ($parameters as $name => $value) {
$this->parameters[$name] = $value;
}
}
/**
* Method to be called statically to create Singleton
*
* @param array Parameters (variables values of the function) to be preserved
* @param bool Whether the Singleton should be reset
* @static
* @access public
*/
function &getInstance($parameters = array(), $reset = False)
{
static $singleton;
if ($reset) $singleton = null;
if (!is_object($singleton)) {
$singleton = new Math_Finance_FunctionParameters(True, $parameters);
}
return $singleton;
}
}
?>
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