To change the value of a measurement explicitly, use
setValue(). to overwrite the current value. The parameters are
the same as the constructor.
Example 603. Changing a value
<?php
$locale = new Zend_Locale('de_AT');
$unit = new Zend_Measure_Length(1,Zend_Measure_Length::METER);
$unit->setValue(1.2);
echo $unit;
$unit->setValue(1.2, Zend_Measure_Length::KILOMETER);
echo $unit;
$unit->setValue("1.234,56", Zend_Measure_Length::MILLIMETER,$locale);
echo $unit;