Php implements the method of separating strings by specified distance

This article mainly introduces the php method for separating strings by specified distance. it involves string operations and is very useful, for more information about how to split strings by a specified distance, see the example in this article. Share it with you for your reference. The details are as follows:

Add a comma to a string every three characters, for example, converting string 1234567890 to 1,234,567,890. this is very common in the financial field.

<? Php/*** separated by commas (,) * @ param string $ str * @ return string */function splitStrWithComma ($ str) {$ arr = array (); $ len = strlen ($ str); for ($ I = $ len-1; $ I >=0;) {$ new_str = ""; for ($ j = $ I; $ j> $ I-3 & $ j> = 0; $ j --) {$ new_str. = $ str [$ j] ;}$ arr [] = $ new_str; $ I = $ j ;}$ string = implode (',', $ arr ); // flip the string to implement it by yourself // $ string = strrev ($ string); for ($ I = 0, $ j = strlen ($ string)-1; $ I <= $ j; $ I ++, $ j --) {$ tmp = $ string [$ I]; $ string [$ I] = $ string [$ j]; $ string [$ j] = $ tmp;} return $ string ;}$ str = "1234567890 "; $ new_str = splitStrWithComma ($ str); echo $ new_str. "\ n ";

I hope this article will help you with php programming.