The
lcfirst() string function in PHP will convert the first character in a string to lowercase.
Only works in PHP v5.3 and greater. PHP users with v5.3 and less can use the code on the bottom of this page.

<?php
$myString = "How are you today?";
$newString = lcfirst($myString);
echo $newString;
?>
how are you today?
If you are on a PHP installation less than 5.3 you can use this to accomplish the same thing:

<?php
$myString = "How are you today?";
$myString[0] = strtolower($myString[0]);
echo $myString;
?>
how are you today?