On 22 Dec 2012 at 16:50, Tedd Sperling <t...@sperling.com> wrote: 

> On Dec 21, 2012, at 8:06 PM, Jim Giner <jim.gi...@albanyhandball.com> wrote:
>>> That actually makes sense tho.  Afterall, a string is truly only one memory
>>> allocation whereas array elements are basically multiple vars having the
>>> same name.  So - how can you unset one char in a string?
> It depends upon the language -- while it is true that the start of a string is
> located at a memory address, the chars of the string are identical to the
> chars in an array. As such, you can view a string as an array. Each index is
> representative of a char (one byte) in the string.

That is explicitly documented here:


String access and modification by character

Characters within strings may be accessed and modified by specifying the 
zero-based offset of the desired character after the string using square array 
brackets, as in $str[42]. Think of a string as an array of characters for this 
purpose. The functions substr() and substr_replace() can be used when you want 
to extract or replace more than 1 character.

Cheers  --  Tim

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