Print a filtered list of PHP constants. Usage: php con.php [-k keyfilter] [-v valuefilter]

con.php

<?
$x = get_defined_constants();
list($kf,$vf) = array_values(getopt('k:v:'));
foreach ($x as $k =>$v) {
	if ($kf !== null && 0 !== stripos($k, $kf)) continue;

	if ($vf === null || $v == $vf) echo "$k:$v\n";
}