Truncate Output of Field Php

I have a call 开发者_如何学编程to the database for this row:

echo "{$row['uLName']}";

This would output for example say : "Smith"

How do I get this call to just output "S" or whatever the first letter is of the output using php?

Thanks

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A simple call to substr():

echo substr($row['uLName'],0,1);

Or by string index, since a string's characters can be accessed by numeric array index.

echo $row['uLName'][0];