PHP Classes

BioR: Calculate biorhythm curve values and draw diagrams

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biorhythm 1.0.0FreewareAlgorithms, Graphics, Biology


This is a simple class for calculating a personal biorhythm values given the birth date and the date of a given day of life.

The (most common) theory of biorhythm states that our daily lives are significantly affected by simple rhythmic cycles. When we are born, three cycles begin from zero point and then oscillate between -100 and 100 till we die. The physical period is 23 days long, emotional 28, and intellectual has period of 33 days. Beware of days when any curve crosses zero especially if two or three do this simultaneously.

This class computes the data that defines the three sinusiodal curves (physical, emotional, and intellectual) in range from -100 to 100.

If the gd library extension is installed the class also provides means to build a simple yet neat diagram.

Innovation Award
PHP Programming Innovation award nominee
September 2004
Number 7
Biorhythms can provide information that is interesting to people that would like to know what to expect about how will they feel physically, emotionally and intellectually in the future days.

This class provides a means to draw the biorhythm curves in a graph, so anybody can see what they can expect in any range of days.

This can be an useful add-on for sites that focus on personalized content of interest for each user about himself.

Manuel Lemos
Picture of iztok strzinar
Name: iztok strzinar <contact>
Classes: 2 packages by
Country: Slovenia Slovenia
Age: 53
All time rank: 8612 in Slovenia Slovenia
Week rank: 258 Up1 in Slovenia Slovenia Up
Innovation award
Innovation award
Nominee: 2x

  • bior.gif
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Plain text file bior11.php Class biorhythm class with documentation

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