Question

我试图展示动物和平均寿命多年，它不会显示生命。有什么帮助吗？

<?php
$animal = $_POST['animal'];

array(
$lifespans["Mouse"] => "4",
$lifespans["Queen Bee"] => "5",
$lifespans["Squirrel"] => "20",
$lifespans["Rattlesnake"] => "22",
$lifespans["Pheasant"] => "27",
$lifespans["Mallard Duck"] => "29",
$lifespans["Bear"] => "40",
$lifespans["Box Turtle"] => "123",
);

print("<p>The $animal has an average life space of $lifespans years.</p>");

＆GT;

编辑：

用户有一个这些动物的下拉菜单，当他们选择一个并点击提交时，它将显示他们的生命周期。

Answer 1

修复你的数组声明：

$lifespans = array(
    "Mouse" => "4", // You could also do "Mouse" => 4, etc. as PHP will type-juggle
    "Queen Bee" => "5",
    "Squirrel" => "20",
    "Rattlesnake" => "22",
    "Pheasant" => "27",
    "Mallard Duck" => "29",
    "Bear" => "40",
    "Box Turtle" => "123",
);

使用它来访问数组的特定元素：

print("<p>The $animal has an average life space of $lifespans[$animal] years.</p>");

我是字符串连接的更大粉丝：

print("<p>The " . $animal . " has an average life space of " . $lifespans[$animal] . " years.</p>");

设置关联数组时出错

1 个答案: