无法从$_POST获得参数。我确信代码是正确的，因为它们是由一本书给出的。
<html>
<head>
<title>Book-O-Rama Catalog Search</title>
</head>
<body>
<h1>Book-O-Rama Catalog Search</h1>
<form action="results.php" method="post">
Choose Search Type:<br />
<select name="searchtype">
<option value="author">Author
<option value="title">Title
<option value="isbn">ISBN
</select>
<br />
Enter Search Term:<br />
<input name="searchterm" type="text" size="40">
<br />
<input type="submit" name="submit" value="Search">
</form>
</body>
</html>
这是获取参数的.php脚本。
<html>
<head>
<title>Book-O-Rama Search Results</title>
</head>
<body>
<h1>Book-O-Rama Search Results</h1>
<?php
// create short variable names
$searchtype=$_POST['searchtype'];
$searchterm=trim($_POST['searchterm']);
echo "Search type: ".$searchtype."</br>";
echo "search term: ".$searchterm."</br>";
if (!$searchtype || !$searchterm) {
echo 'You have not entered search details. Please go back and try again.';
exit;
}
?>
</body>
</html>
$searchtype和$searchterm始终为空。我可以＆＃39;
答案 0 :(得分：0)
应关闭选项标签
<html>
<head>
<title>Book-O-Rama Catalog Search</title>
</head>
<body>
<h1>Book-O-Rama Catalog Search</h1>
<form action="results.php" method="post">
Choose Search Type:<br />
<select name="searchtype">
<option value="author">Author</option>
<option value="title">Title</option>
<option value="isbn">ISBN</option>
</select>
<br />
Enter Search Term:<br />
<input name="searchterm" type="text" size="40">
<br />
<input type="submit" name="submit" value="Search">
</form>
</body>
</html>
答案 1 :(得分：0)
我正在使用phpstorm 2017.2，以下方法为我工作。
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