3;
echo "Wahrheitswert: $ww
";
if($ww) echo "Dieser Wert ist wahr
";
echo "Implizit: 5>3: " . (5>3) . ", 5<3: " . (5<3) . "
";
echo "Explizit: boolval(5>3): " . boolval(5>3) .
", boolval(5<3): " . boolval(5<3) . "
";
echo "TRUE: " . TRUE . ", true: " . true . "
";
echo "FALSE: " . FALSE . ", false: " . false . "
";
echo "boolval(1): " . boolval(1) . ", boolval(0): " . boolval(0)
. ", boolval(-1): " . boolval(-1) . "
";
echo "boolval(0.0): " . boolval(0.0)
. ", boolval(0.000000001): "
. boolval(0.000000001) . "
";
echo "boolval(''): " . boolval('')
. ", boolval(' '): " . boolval(' ')
. ", boolval('0'): " . boolval('0') . "
";
$zahl = 42;
$text = "42";
if($zahl == $text) echo "==
";
if($zahl != $text) echo "!=
";
if($zahl === $text) echo "===
";
if($zahl !== $text) echo "!==
";
?>