PHP/Operator/Conditional Operator — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
| |
Текущая версия на 07:06, 26 мая 2010
Содержание
Conditional Operator
<?php
function is_odd()
{
global $num;
echo("$num is an odd number<hr>");
}
function is_even()
{
global $num;
echo("$num is an even number<hr>");
}
?>
<html>
<head>
<title>Conditional Operator</title>
</head>
<body>
<?php
$num = 57;
( $num % 2 != 0 ) ? is_odd() : is_even();
$num = 44;
( $num % 2 != 0 ) ? is_odd() : is_even();
?>
</body>
</html>
Conditional Statements
<?php
$Age = 20;
if ($Age < 18) {
print "You"re young - enjoy it!\n";
} else {
print "You"re not under 18\n";
}
if ($Age >= 18 && $Age < 50) {
print "You"re in the prime of your life\n";
} else {
print "You"re not in the prime of your life\n";
}
if ($Age >= 50) {
print "You can retire soon - hurrah!\n";
} else {
print "You cannot retire soon :( ";
}
?>
Less-than and greater-than
<?
$age = 8;
if ($age > 17) {
print "> 17";
}
if ($age >= 65) {
print ">= 65";
}
$kelvin_temp = 0;
if ($kelvin_temp < 20.3) {
print "< 20.3";
}
?>
The trinary operator
<?
$first_num =2;
$second_num = 1;
$max_num = $first_num > $second_num ? $first_num : $second_num;
echo($max_num);
?>