php_upr_2

<pre>
<?php
$a=5;
$b=5;
var_dump($a);
echo "$a+$b\n";
//masivi
echo "$a[3]\n";
//boolean
$boolean = true;
echo $boolean ? "123123\n" : "too much flood\n";
$bool2 = null;
if ($bool2 &&  $boolean) echo "true\n";
else echo "false\n";
if ($bool2 ||  $boolean) echo "true\n";
else echo "false\n";
// switch
switch($a) {
    case "3":
    echo "a is 3";
    break;
    case "5":
    echo "a is 5\n";
    break;
    default:
    echo "a is not 3 and 5";
    break;
}
// while
$i = 0;
while($i<10) echo "$i ", $i++;
echo "<hr />";
// for
for($x=0; $x<100; $x++) {
    if($x%2) continue;
    if($x == 10) break;
    echo "$x ";
}
echo "\n";
for($x=0; $x<100; $x++):
    if($x%2) continue;
    if($x == 10) break;
    echo "$x ";
endfor;
echo "\n";
// konstanta
define("ime", "stoinost");
echo @ime;
// @ podtiska syob6teniq za greshka
echo "\n";
$k = 3;
$j = 5;
// "," podavame pove4e parametri na echo
echo "$k + $j = ", ($k+$j), "\nblq";
//3 + 5 = 8
?>