Variable%20Variables%20in%20PHP

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Variable Variables in PHP
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What is a Variable Variable?

• Variables in PHP are denoted with the dollar
  sign, so a variable variable is a variable with
  two dollar sign notations
• Ex count

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How do they work?

• The innermost variable is resolved first,
  returning its value as the name of the outermost
  variable.
• Ex name Eric
• Eric Seufert
• echo name would print Seufert

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When are they useful?

• Dynamic forms that allow for different input
  based on some initial decision