--TEST--
Test vsprintf() function : usage variations - scientific formats with scientific values
--FILE--
<?php
/* Prototype  : string vsprintf(string format, array args)
 * Description: Return a formatted string 
 * Source code: ext/standard/formatted_print.c
*/

/*
 * Test vsprintf() when different scientific formats and scientific values
 * are passed to the '$format' and '$args' arguments of the function
*/

echo "*** Testing vsprintf() : scientific formats and scientific values ***\n";

// defining array of scientific formats
$formats = array(
  '%e %+e %-e', 
  '%le %Le %4e %-4e',
  '%10.4e %-10.4e %.4e', 
  '%\'#20e %\'20e %\'$20e %\'_20e',
  '%3$e %4$e %1$e %2$e'
);

// Arrays of scientific values for the format defined in $format.
// Each sub array contains scientific values which correspond to each format string in $format
$args_array = array(
  array(0, 1e0, "10e2" ),
  array(2.2e2, 10e10, 1000e-2, 1000e7),
  array(-22e12, 10e20, 1.2e2),
  array(1e1, +1e2, -1e3, "1e2_"),
  array(3e3, 4e3, 1e3, 2e3)
);
 
// looping to test vsprintf() with different scientific formats from the above $format array
// and with signed and other types of  values from the above $args_array array
$counter = 1;
foreach($formats as $format) {
  echo "\n-- Iteration $counter --\n";
  var_dump( vsprintf($format, $args_array[$counter-1]) );
  $counter++;
}

echo "Done";
?>
--EXPECTF--
*** Testing vsprintf() : scientific formats and scientific values ***

-- Iteration 1 --
string(36) "0.000000e+0 +1.000000e+0 1.000000e+3"

-- Iteration 2 --
string(38) "2.200000e+2 e 1.000000e+1 1.000000e+10"

-- Iteration 3 --
string(32) "-2.2000e+13 1.0000e+21 1.2000e+2"

-- Iteration 4 --
string(74) "#########1.000000e+1 1.000000e+2 $$$$$$$$-1.000000e+3 _________1.000000e+2"

-- Iteration 5 --
string(47) "1.000000e+3 2.000000e+3 3.000000e+3 4.000000e+3"
Done