General form:
exp1 ? exp2 : exp3;
exp1 is true - entire expression evaluates as exp2
exp1 is false - entire expression evaluates as exp3
Example 1:
The following will get the minimum of x and y
<?
$x = 10;
$y = 20;
$a = ($x < $y) ? $x : $y;
echo $a." is the minimum of the two numbers";
?>
Example 2:
The following will output the value of i 20 times
<?
$i = 0;
$char1 = " is less than or equal to 10<BR>";
$char2 = " is less than or equal to 20<BR>";
while ($i < 20) {
echo $i++ < 10 ? $i.$char1 : $i.$char2;
}
?>
Example 3:
The following will output "cat penguin forth fifth sixth"
<?
$i = 0;
$j = 2;
$x = array("dog", "cat", "penguin");
$y = array("first", "second", "third", "forth", "fifth", "sixth");
while ($i<5) {
$a = $i++<$j ? $x["$i"] : $y["$i"];
echo "$a<br>";
}
?>
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Conditional Operator
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