游文俊 - 20141006作業

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遞增／遞減運算子

<?php

echo "<h3>a++</h3>";

$a = 5;

echo "應該是 5: ".$a++."<br />\n";

echo "應該是 6: ".$a."<br />\n";

echo "<h3>++a</h3>";

$a = 5;

echo "應該是 6: ".++$a."<br />\n";

echo "應該是 6: ".$a."<br />\n";

echo "<h3>a--</h3>";

$a = 5;

echo "應該是 5: ".$a--."<br />\n";

echo "應該是 4: ".$a."<br />\n";

echo "<h3>--a</h3>";

$a = 5;

echo "應該是 4: ".--$a."<br />\n";

echo "應該是 4: ".$a."<br />\n";

?>

遞增／遞減運算子，結果如下：