Fancy Pants

fancy-pants.php

$pattern = '/^(P|K)\w*/';
$replacement = 'Mr Fancy Pants';
$subject = "Powelski";

$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Kris";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Kris Powelski";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Powelski Kris";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Rafal";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Gicgier";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Rafal Gicgier";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );

$subject = "Gicgier Rafal";
$return = preg_replace( $pattern, $replacement, $subject );
var_dump( $return );