The string offset is not set.

The string offset is not set. PHPcode $ str1 & quot; nojobnoaddress & quot; functionMystrrev ($ str1) {$ newstr & quot; $ lenstrlen ($ str1); for ($ I $ len; $ I & gt; the string offset is not set.

PHP code

  $ Str1 = "no job no address"; function Mystrrev ($ str1) {$ newstr = ""; $ len = strlen ($ str1); for ($ I = $ len; $ I> = 0; $ I --) {$ newstr. = $ str1 {$ I};} return $ newstr;} echo Mystrrev ($ str1 );

Warning Notice: Uninitialized string offset
How can I set this offset.

------ Solution --------------------
For ($ I = $ len-1; $ I >=0; $ I --)