[英]help with multiple input boxes in html and processing the post data with php
[英]Multiple select/input boxes to POST in PHP
我正在尝试做一个简单的表单,该表单具有两个textareas,以及两个1表单的下拉列表。 我正在尝试保存POST的值,但是它不起作用,我不断得到:
Notice: Undefined index: team2
Notice: Undefined index: players2
我的POST页面是这样的:
$team1 = $_POST["team1"];
$team2 = $_POST["team2"];
$str1 = $_POST["players1"];
$str2 = $_POST["players2"];
我的形式是这样的:
<form action="cap_update.php" method="post">
To:
<select name="team1">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players1"></textarea>
<br><br>
To:
<select name="team2">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players2"></textarea>
<br><br>
<input type="submit" value="Submit trade!">
</form>
<?php
if(isset($team1))
{
$team1 = $_POST["team1"];
$team2 = $_POST["team2"];
$str1 = $_POST["players1"];
$str2 = $_POST["players2"];
}
print_r($_POST);
?>
<form action="index.php" method="post">
To:
<select name="team1">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players1"></textarea>
<br><br>
To:
<select name="team2">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players2"></textarea>
<br><br>
<input type="submit" value="Submit trade!">
</form>
use isset to check
otherwise you can use
error_reporting(E_ERROR | E_PARSE);
E_ERROR
<?php
error_reporting(E_ERROR | E_PARSE);
$team1 = $_POST["team1"];
$team2 = $_POST["team2"];
$str1 = $_POST["players1"];
$str2 = $_POST["players2"];
?>
<form action="index.php" method="post">
To:
<select name="team1">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players1"></textarea>
<br><br>
To:
<select name="team2">
<option value="Anaheim">Anaheim</option>
<option value="Arizona">Arizona</option>
<option value="Boston">Boston</option>
</select><br><br>
<textarea rows="5" cols="80" name="players2"></textarea>
<br><br>
<input type="submit" value="Submit trade!">
</form>
由于您有四个变量,因此如果在if
条件语句中检查isset($ team1),则在其他任何变量为空的情况下都会引发错误。
相反,您可以使用三元运算符。 例子如下
<?php
$team1 = (isset($_POST["team1"]))?$_POST["team1"]:'';
$team2 = (isset($_POST["team2"]))?$_POST["team2"]:'';
$players1 = (isset($_POST["players1"]))?$_POST["players1"]:'';
$players2 = (isset($_POST["players2"]))?$_POST["players2"]:'';
?>
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