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jest taka sztuczka jak umieszcazanie kodu php w BBcode - php!!
twój problem można rozwiązać bardzo łatwo[php:1:2f092ee30b]<?php
$str='jakis string';
print $str[0];
?>[/php:1:2f092ee30b]to da ci 'j', i tak dalej, bo string tak naprawde już jest tablicą znaków!!!

[php:1:8f69c29479]<?php
function strtoarray($string)
{
   $array=array();
   for ($i = 0; $i <= strlen($string)-1; $i++) $array[]=$string{$i};
   return $array;
}
?>[/php:1:8f69c29479]

a) There is an ambiguity in today’s sharing of array offsets syntax for both strings
and arrays. In code such as $str[0] = ‘a’; where $str is an empty string (due to
earlier php 4 and php 3 behavior) $str is treated as an array and therefore the
above statement would result in $str[0] being converted to an array and having its
offset 0 being set to the string “a”. However, some people would expect the result
to be $str as the string value “a”.
By introducing a specialized syntax for string offsets it will be possible to
somewhat optimize the run-time processing, as we will know at compile-time that
the user specifically means to use a string offset.
c) Language wise it is much better if developers will be able to tell if the author
meant to use array offsets or string offsets in a code snippet.

Functionality
The currently suggested syntax is as follows:
$str{2} = ‘a’;
An example of the new functionality:
$str1 = $str2 = “”;
$str1{0} = ‘a’;
$str2[0] = ‘a’;
The result will be $str1 being the string “a” and $str2 being array(0 => “a”).

ale możesz zamiast next użyć for i używać $str[$i]