[RESOLVED] Notice: Uninitialized string offset: 7

[fiorelina21]

the

<?php
$nr='MCDXCII';
$ln=strlen($nr);		
$i=$ln+1;
$num=0;
while ($i>0) 
  {
  $i=$i-1;
  $v=0;
  $car==$nr{$i};    

   switch($car)

turns me:
Notice: Uninitialized string offset: 7 in ....line10

[laserlight]

Like arrays, string indices start from 0. The string literal 'MCDXCII' has 7 characters, so its range of valid string indices are from 0 to 6 inclusive. as such, $nr[7] is not valid.

In your loop, $i = 8 on the first iteration. It is immediately decremented, so by the time you access the character with $nr{$i}, $i = 7. Thus you get $nr{7}, which as I noted is invalid.

By the way, I noticed that you use braces ($nr{$i}). Use brackets instead ($nr[$i]).

[fiorelina21]

THAKS