Warning: This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Deletes the character under the cursor. All characters to the right of the
cursor on the same line are moved to the left one position and the last
character on the line is filled with a blank. The cursor position does not
change.
Return Values
Returns FALSE
on success, TRUE
otherwise.