Php code for calculating the relative paths of two files-php Tutorial

Php calculates the implementation code of the relative paths of two files

How to calculate the relative path between two files? Php implementation is very simple. Here we share a piece of code to calculate the relative paths of the two files. if you need it, please refer to it. Calculate the relative path of the two files. For example, a file is as follows: $ a = "/a/B/c/d/e. php"; $ B = "/a/B/12/34/c. php ". How can we calculate the relative path of B to? Code: $ Counta) {while ($ countb> $ counta) {$ path. = ".. /"; $ countb -- ;}/// find the first public node for ($ I = $ countb-1; $ I >=0 ;) {if ($ patha [$ I]! = $ Pathb [$ I]) {$ path. = ".. /"; $ I --;} else {// determine whether it is the real first public node to prevent the occurrence of sub-directory name duplication. for ($ j = $ I-1, $ flag = 1; $ j> = 0; $ j --) {if ($ patha [$ j] = $ pathb [$ j]) {continue ;} else {$ flag = 0; break ;}} if ($ flag) break; else $ I ++ ;}}for ($ I + = 1; $ I <= $ counta; $ I ++) {$ path. = $ patha [$ I]. "/";} return $ path;} // call example $ a = "/a/c/d/e. php "; $ B ="/a/c. php "; $ path = getRelativePath ($ a, $ B); echo $ path; ?>