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others2bool.php

2016-02-24 09:46 519 查看

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title> others2bool.php </title>

<meta charset="UTF-8">

<meta name="Generator" content="EditPlus">

<meta name="Author" content="">

<meta name="Keywords" content="">

<meta name="Description" content="">

</head>

<body>

<?php

echo gettype((bool) "") . " "; // bool(false)

echo gettype((bool) 1) . " "; // bool(true)

echo gettype((bool) -2) . " "; // bool(true)

echo gettype((bool) "foo") . " "; // bool(true)

echo gettype((bool) 2.3e5) . " "; // bool(true)

echo gettype((bool) array(12)) . " "; // bool(true)

echo gettype((bool) array()) . " "; // bool(false)

$a=Array(1,2,3,1);

echo $a[0] . " ";

echo $a[1] . " ";

echo $a[2] . " ";

echo $a[3] . " ";

echo ($a[0]>2)+($a[1]>2)+($a[2]>2)+($a[3]>2);

echo '<hr>';

if(($a[0]>2)+($a[1]>2)+($a[2]>2)+($a[3]>2)>=2)

{

echo "OK ";

}

else

{

echo "Not OK ";

}

?>

</body>

</html>



boolean

boolean

boolean

boolean

boolean

boolean

boolean

1

2

3

1

1

Not OK

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