(PHP 4 >= 4.0.7, PHP 5)
vprintf — Output a formatted string
Display array values as a formatted string according to format (which is described in the documentation for sprintf()).
Operates as printf() but accepts an array of arguments, rather than a variable number of arguments.
Returns the length of the outputted string.
Example #1 vprintf(): zero-padded integers
<?php
vprintf("%04d-%02d-%02d", explode('-', '1988-8-1')); // 1988-08-01
?>