PHP never ceases to surprise me with its built-in capabilities. These are a few of the functions I find most fascinating. 1. LevenshteinThis function uses the Levenshtein algorithm to calculate the disparity or "distance" between two text strings. Named after its creator, Vladimir Levenshtein, it measures how identical two words or sentences are.For instance:  levenshtein("PHP is wonderful", "PHP is wonderful"); // Returns 0 levenshtein("Bright themes", "are great"); // Returns 13 The greater the disparity, the greater the distance. 2. Easter DatesWould you believe PHP can tell you when Easter is for any given year? Easter's date is determined based on lunar…