Something About PHI

Right now I'm reading The Davinci Code by Dan Brown. It's the story of Robert Langdon, a Professor of Religous Symbolism, and his task of solving a code involved with a murder in Paris. Enough said. On page 102 Langdon has a flashback to a class he taught on the use of "PHI". PHI, he tells his class, is the mathematical term for the number 1.618. According to Langdon the entire human body is made up of this mathematical phenomenon:

“Measure the distance from the tip of your head to the floor. Then divide that by the distance from your belly button to the floor. Guess what number you get.”
“Not PHI!” one of the jocks blurted out in disbelief.
“Yes, PHI,” Langdon replied. “One-point-six-one-eight. Want another example? Measure the distance from your shoulder to your fingertips, and then divide it by the distance from your elbow to your fingertips. PHI again. Another? Hip to floor divided by knee to floor. PHI again. Finger joints. Toes. Spinal divisions. PHI. PHI. PHI. My friends, each of you is a walking tribute to the Divine Proportion.”(p.102)

Langdon continues to tell his students how PHI can be found in animals as well as art work. Would an author make such bold statements if they were not true? I know the book is fiction but I would really like to know if this idea of PHI is legit. Here's where you come in. I don't have a tape measure so I can't perform the measurements myself. I thought it would be interesting if you readers did the measurements yourself and posted your results. If this idea of "PHI" is legitimate is shows that despite how different we think we are to one another, we are actually quite the same.