function units_mathematical_expression_postfix_stack_pop in Units of Measurement 7.2

Pop an element off a postfix parsing stack.

Parameters

array $stack: Current stack of postfix parsing

Return value

UnitsMathematicalExpression|string Popped element off the postfix parsing stack. It may be either an instance of UnitsMathematicalExpression or a string depending on what stage of parsing we are

Throws

UnitsMathematicalExpressionMalformedException Exception is thrown if the stack is empty

1 call to units_mathematical_expression_postfix_stack_pop()

units_mathematical_expression_load in ./units.module

Load mathematical expression from database.

File

./units.module, line 807

Provide API for managing and converting units of measurement.

Code

function units_mathematical_expression_postfix_stack_pop(&$stack) {
  if (empty($stack)) {
    throw new UnitsMathematicalExpressionMalformedException();
  }
  return array_pop($stack);
}