php control structures

some php control structures

====================

while

------

$i=0;

while ($i<=3) {

echo $i . "
";

$i++;

}

for

----

for ($i=1;$i<=3;$i++) {

echo $i . "
";

}

if

--

for ($i=1;$i<=3;$i++) {

if ($i==2) {

echo "One loop left
";

}

echo $i . "
";

}