1.

What will happen in this function call? 
  <?php function calc($price, $tax) { $total = $price + $tax; } $pricetag = 15; $taxtag = 3; calc($pricetag, $taxtag); ?>

A. Call By Value
B. Call By Reference
C. Default Argument Value
D. Type Hinting
Answer» B. Call By Reference


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