====Some Useful PHP Functions Source Code For Astronomy, Math and Science====

**[[the_julian_day_number_and_the_julian_date|The Julian Day Number and the Julian Date]]**\\
**[[computing_the_date_and_time_corresponding_to_any_jd|Computing the Date and Time Corresponding to Any General JD (Julian Date)]]**\\
**[[julian-date|Julian Date Function]]**\\ 
**[[inverse-julian-date|Inverse Julian Date Function]]**\\ 


**[[parsing-data-strings|Parsing Data Strings]]**\\ 

**[[integer-fraction-arithmetic|Performing Signed Integer Fraction Arithmetic in Arbitrary-Precision]]**