blocks|key|2749946|text|改用下面的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2749947|<input+id='tea-submit'+type='submit'+name+=+'submit'++++value+=+'Tea'>
<input+id='coffee-submit'+type='submit'+name+=+'submit'+value+=+'Coffee'>|code-block|syntax|javascript|2749948|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Use this instead:</p>

<pre><code>&lt;input id='tea-submit' type='submit' name = 'submit'    value = 'Tea'&gt;
&lt;input id='coffee-submit' type='submit' name = 'submit' value = 'Coffee'&gt;
</code></pre>


blocks|key|2749950|text|按钮名称不是submit，所以没有设置php+$_POST['submit']的值。正如在isset($_POST['submit'])中一样，计算结果为false。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2749951|<html>
<form+action=""+method="post">
++++<input+type="hidden"+name="action"+value="submit"+/>
++++<select+name="name">
++++++++<option>John</option>
++++++++<option>Henry</option>
++++<select>

++++<input+id="tea-submit"+type="submit"+name="submit"+value="Tea">
++++<input+id="coffee-submit"+type="submit"+name="submit"+value="Coffee">
</form>
</html>

<?php
if+(isset($_POST['action']))+{
++++echo+'<br+/>The+'+.+$_POST['submit']+.+'+submit+button+was+pressed<br+/>';
}
?>|code-block|syntax|javascript|2749952|entityMap^0|N|G|19|N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

<p>The button names are not submit, so the php <code>$_POST['submit']</code> value is not set. As in <code>isset($_POST['submit'])</code> evaluates to false.</p>

<pre><code>&lt;html&gt;
&lt;form action="" method="post"&gt;
    &lt;input type="hidden" name="action" value="submit" /&gt;
    &lt;select name="name"&gt;
        &lt;option&gt;John&lt;/option&gt;
        &lt;option&gt;Henry&lt;/option&gt;
    &lt;select&gt;
&lt;!-- 
make sure all html elements that have an ID are unique and name the buttons submit 
--&gt;
    &lt;input id="tea-submit" type="submit" name="submit" value="Tea"&gt;
    &lt;input id="coffee-submit" type="submit" name="submit" value="Coffee"&gt;
&lt;/form&gt;
&lt;/html&gt;

&lt;?php
if (isset($_POST['action'])) {
    echo '&lt;br /&gt;The ' . $_POST['submit'] . ' submit button was pressed&lt;br /&gt;';
}
?&gt;
</code></pre>


blocks|key|2962636|text|首先，使用相同的ID两次不是一个好主意。ID应该是唯一的，如果你需要样式化元素，你应该使用一个类来应用CSS。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2962637|最后，您将submit按钮的名称定义为Tea和Coffee，但在PHP中使用的是submit作为索引。例如，您的索引应该是$_POST‘’Tea‘。这将需要你检查它是否被设置，因为它只发送一个，你可以用isset()来做。|2962638|不管怎样，user4035已经抢先一步了，他的代码会帮你“修复”它。|2962639|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

<p>To start, using the same ID twice is not a good idea. ID's should be unique, if you need to style elements you should use a class to apply CSS instead.</p>

<p>At last, you defined the name of your submit button as Tea and Coffee, but in your PHP you are using submit as index. your index should have been $_POST['Tea'] for example. that would require you to check for it being set as it only sends one , you can do that with isset().</p>

<p>Buy anyway , user4035 just beat me to it , his code will "fix" this for you.</p>


blocks|key|159121|text|您可以保持html的原样，但使用以下php代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|159122|<?php
++++$name+=+$_POST['name'];
++++$purchase1+=+$_POST['Tea'];
++++$purchase2+=$_POST['Coffee'];
?>|code-block|syntax|javascript|159123|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>You can maintain your html as it is but use this php code</p>

<pre><code>&lt;?php
    $name = $_POST['name'];
    $purchase1 = $_POST['Tea'];
    $purchase2 =$_POST['Coffee'];
?&gt;
</code></pre>


blocks|key|2750018|text|正如其他人所说，您可能误解了唯一id的概念。我要补充的是，我不喜欢在这里使用"value“作为标识属性，因为它可能会随着时间的推移而改变(即，如果你想提供多种语言)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2750019|<input+id='submit_tea'++++type='submit'+name+=+'submit_tea'++++value+=+'Tea'+/>
<input+id='submit_coffee'+type='submit'+name+=+'submit_coffee'+value+=+'Coffee'+/>|code-block|syntax|javascript|2750020|在你的php脚本中|2750021|if(+array_key_exists(+'submit_tea',+$_POST+)+)
{
++//+handle+tea
}
if(+array_key_exists(+'submit_coffee',+$_POST+)+)
{
++//+handle+coffee
}|2750022|此外，如果您想检查数据是否准确发布，可以添加类似if(+'POST'+==+$_SERVER[+'REQUEST_METHOD'+]+)的内容。|offset|length|style|CODE|2750023|entityMap^0|0|0|0|0|O|18|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

<p>Like the others said, you probably missunderstood the idea of a unique id. All I have to add is, that I do not like the idea of using "value" as the identifying property here, as it may change over time (i.e. if you want to provide multiple languages).</p>

<pre><code>&lt;input id='submit_tea'    type='submit' name = 'submit_tea'    value = 'Tea' /&gt;
&lt;input id='submit_coffee' type='submit' name = 'submit_coffee' value = 'Coffee' /&gt;
</code></pre>

<p>and in your php script</p>

<pre><code>if( array_key_exists( 'submit_tea', $_POST ) )
{
  // handle tea
}
if( array_key_exists( 'submit_coffee', $_POST ) )
{
  // handle coffee
}
</code></pre>

<p>Additionally, you can add something like <code>if( 'POST' == $_SERVER[ 'REQUEST_METHOD' ] )</code> if you want to check if data was acctually posted.</p>


blocks|key|160337|text|最初的帖子提到了按钮。您还可以用按钮替换输入标记。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|160338|<button+type="submit"+name="product"+value="Tea">Tea</button>
<button+type="submit"+name="product"+value="Coffee">Coffee</button>|code-block|syntax|javascript|160339|提交表单时，name和value属性是提交值所必需的(在本例中，id属性不是必需的)。属性type=submit指定单击此按钮会导致提交表单。|offset|length|style|CODE|160340|当服务器处理提交的表单时，$_POST['product']将包含值“茶”或“咖啡”，这取决于所单击的按钮。|160341|如果您愿意，还可以要求用户在提交表单之前进行确认(例如，在实现删除按钮时很有用)。|160342|<button+type="submit"+name="product"+value="Tea"+onclick="return+confirm('Are+you+sure+you+want+tea?');">Tea</button>
<button+type="submit"+name="product"+value="Coffee"+onclick="return+confirm('Are+you+sure+you+want+coffee?');">Coffee</button>|160343|entityMap^0|0|0|6|4|B|5|W|2|19|B|0|D|H|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]|$I|11|J|12|K|L]|$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@$I|16|J|17|K|L]]|9|@]|A|$]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|T|$]]

<p>The initial post mentioned buttons. You can also replace the input tags with buttons.</p>

<pre><code>&lt;button type="submit" name="product" value="Tea"&gt;Tea&lt;/button&gt;
&lt;button type="submit" name="product" value="Coffee"&gt;Coffee&lt;/button&gt;
</code></pre>

<p>The <code>name</code> and <code>value</code> attributes are required to submit the value when the form is submitted (the <code>id</code> attribute is not necessary in this case). The attribute <code>type=submit</code> specifies that clicking on this button causes the form to be submitted.</p>

<p>When the server is handling the submitted form, <code>$_POST['product']</code> will contain the value "Tea" or "Coffee" depending on which button was clicked.</p>

<p>If you want you can also require the user to confirm before submitting the form (useful when you are implementing a delete button for example).</p>

<pre><code>&lt;button type="submit" name="product" value="Tea" onclick="return confirm('Are you sure you want tea?');"&gt;Tea&lt;/button&gt;
&lt;button type="submit" name="product" value="Coffee" onclick="return confirm('Are you sure you want coffee?');"&gt;Coffee&lt;/button&gt;
</code></pre>


blocks|key|2750133|text|您可以使用类似以下内容来为您的按钮赋值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2750134|<?php
if+(isset($_POST['submit']))+{
++$aSubmitVal+=+array_keys($_POST['submit'])[0];
++echo+'The+button+value+is:+'+.+$aSubmitVal;
}
?>
<form+action="/"+method="post">
++<input+id="someId"+type="submit"+name="submit[SomeValue]"+value="Button+name">
</form>|code-block|syntax|javascript|2750135|这将得到字符串"SomeValue“。|2750136|https://i.imgur.com/28gr7Uy.gif|offset|length|2750137|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|V|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@]|9|@$K|X|L|Y|1|Z]]|A|$]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|J]]]]

<p>You could use something like this to give your button a value:</p>

<pre><code>&lt;?php
if (isset($_POST['submit'])) {
  $aSubmitVal = array_keys($_POST['submit'])[0];
  echo 'The button value is: ' . $aSubmitVal;
}
?&gt;
&lt;form action="/" method="post"&gt;
  &lt;input id="someId" type="submit" name="submit[SomeValue]" value="Button name"&gt;
&lt;/form&gt;
</code></pre>

<p>This will give you the string "SomeValue" as a result</p>

<p><a href="https://i.imgur.com/28gr7Uy.gif" rel="nofollow noreferrer">https://i.imgur.com/28gr7Uy.gif</a></p>


<p>I have a list of names and some buttons with product names. When one of the buttons is clicked the information of the list is sent to a PHP script, but I can't hit the submit button to send its value. How is it done?
I boiled my code down to the following:</p>

<p><strong>The sending page:</strong></p>

<pre><code>&lt;html&gt;
&lt;form action="buy.php" method="post"&gt;
    &lt;select name="name"&gt;
        &lt;option&gt;John&lt;/option&gt;
        &lt;option&gt;Henry&lt;/option&gt;
    &lt;select&gt;
    &lt;input id='submit' type='submit' name = 'Tea'    value = 'Tea'&gt;
    &lt;input id='submit' type='submit' name = 'Coffee' value = 'Coffee'&gt;
&lt;/form&gt;
&lt;/html&gt;
</code></pre>

<p><strong>The receiving page: buy.php</strong></p>

<pre><code>&lt;?php
    $name = $_POST['name'];
    $purchase = $_POST['submit'];
    //here some database magic happens
?&gt;
</code></pre>

<p>Everything except sending the submit button value works flawlessly.</p>


Send value of submit button when form gets posted

服务器

我有一个名称列表和一些带有产品名称的按钮。当单击其中一个按钮时，列表的信息将被发送到PHP脚本，但是我无法点击submit按钮来发送它的值。它是如何做到的？我将我的代码简化为以下内容：发送页面：<html><form action="buy.php" method="post">    <select name="na...

问表单发布时发送提交按钮的值
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问表单发布时发送提交按钮的值EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问表单发布时发送提交按钮的值
EN