我需要以下代码的帮助:
<?php
$a = $_GET['guess'];
$b = 60;
$c = "Missing Guess Parameter";
$d = "Your guess is too low";
$e = "Your guess is not a number";
$f = "Your guess is too high";
$g = "Congratulations - You are right";
if (!isset($a)) {
echo $c;
} elseif ($a < $b) {
echo $d;
} elseif (!is_numeric($_a)) {
echo $e;
} elseif ($a > $b) {
echo $f;
} else {
echo $g;
}
?>
当我将此代码提交到自动评分器时,当
$d
我收到 $a=59
时,我收到失败,并显示 $f
,并且当 $a 为 60 时,$g
未打印出来,我尝试使用 elseif ($a == $b) echo $g
,但是没有任何结果。
我使用 ngrok 和 mamp 将此 PHP 文件提交给自动评分器。
我相信这是因为您正在检查
!is_numeric($_a)
这里没有定义 $_a
变量。
$_GET['guess'] = 61;
$a = $_GET['guess'];
$b = 60;
$c = "Missing Guess Parameter";
$d = "Your guess is too low";
$e = "Your guess is not a number";
$f = "Your guess is too high";
$g = "Congratulations - You are right";
if (!isset($a)) {
echo $c;
} elseif ($a < $b) {
echo $d;
} elseif (!is_numeric($a)) {
echo $e;
} elseif ($a > $b) {
echo $f;
} else {
echo $g;
}
查看上述脚本的代码片段。 https://3v4l.org/fHJN5