--TEST--
Test vprintf() function : error conditions 
--FILE--
<?php
/* Prototype  : int vprintf(string $format , array $args)
 * Description: Output a formatted string 
 * Source code: ext/standard/formatted_print.c
 */

echo "*** Testing vprintf() : error conditions ***\n";

// initialising the required variables
$format = "%s";
$args = array("hello");
$extra_arg = "extra arg";

// Zero arguments
echo "\n-- Testing vprintf() function with Zero arguments --\n";
var_dump( vprintf() );

echo "\n-- Testing vprintf() function with less than expected no. of arguments --\n";
var_dump( vprintf($format) );  

echo "\n-- testing vprintf() function with more than expected no. of arguments --\n";
var_dump( vprintf($format, $args, $extra_arg) );

?>
===DONE===
--EXPECTF--
*** Testing vprintf() : error conditions ***

-- Testing vprintf() function with Zero arguments --

Warning: vprintf() expects at least 1 parameter, 0 given in %s on line %d
bool(false)

-- Testing vprintf() function with less than expected no. of arguments --

Warning: Wrong parameter count for vprintf() in %s on line %d
bool(false)

-- testing vprintf() function with more than expected no. of arguments --

Warning: Wrong parameter count for vprintf() in %s on line %d
bool(false)
===DONE===