What will be the output of the following PHP code ?

<?php
$user = array("Ashley", "Bale", "Shrek", "Blank");
for ($x = 0; $x < count($user); $x++) 
{
    if ($user[$x] == "Shrek") 
	    continue;
    printf ($user[$x]); 
}
?>

<?php
$x;
if ($x)
    print "hi" ;
else
    print "how are u";
?>

<?php
$x = 0;
if ($x++)
    print "hi";
else
    print "how are u";
?>

<?php
$x;
if ($x == 0)
    print "hi" ;
else
    print "how are u";
    print "hello"
?>

<?php
$x = 0;
if ($x == 1)
    if ($x >= 0)
	print "true";
    else
	print "false"; 
?>