如何在 PHP 中将变量作为 $_POST 键传递？
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How to pass variable as $_POST key in PHP?
提问by Dietpixel
How can you pass a variable as the $_POST array key value in PHP? Or is it not possible?
如何在 PHP 中将变量作为 $_POST 数组键值传递？或者不可能？
$test = "test";
echo $_POST[$test];
Thanks
谢谢
回答by Quasdunk
If I get you right, you want to pass a variable from one php-file to another via post. This sure is possible in several ways.
如果我没看错，您想通过 post 将一个变量从一个 php 文件传递到另一个 php 文件。这肯定可以通过多种方式实现。
1. With an HTML-form
1. 使用 HTML 表单
<form action="target.php" method="post">
<input type="text" name="key" value="foo" />
<input type="submit" value="submit" />
</form>
if you click on the submit-button, $_POST['key']in target.phpwill contain 'foo'.
如果您单击提交按钮，则$_POST['key']intarget.php将包含'foo'.
2. Directly from PHP
2.直接来自PHP
$context = stream_context_create(array(
'http' => array(
'method' => 'POST',
'header' => "Content-type: text/html\r\n",
'content' => http_build_query(array('key' => 'foo'))
),
));
$return = file_get_contents('target.php', false, $context);
Same thing as in 1., and $returnwill contain all the output produced by target.php.
与1.相同，$return将包含target.php.产生的所有输出。
3. Via AJAX (jQuery (JavaScript))
3. 通过 AJAX (jQuery (JavaScript))
<script>
$.post('target.php', {key: 'foo'}, function(data) {
alert(data);
});
</script>
Same thing as in 2., but now datacontains the output from target.php.
与2.相同，但现在data包含来自target.php.
回答by Dimitar Marinov
$_POST['key'] = "foo";
echo $_POST['key'];
If I understood right, you want to set a $_POSTkey.
如果我理解正确，你想设置一个$_POST键。
回答by JCOC611
Yes, yes you can:
是的，是的，您可以：
$postName = "test";
$postTest = $_POST[$postName];
$_POST["test"] == $postTest; //They're equal
回答by Manse
Works just as you said ...
就像你说的那样工作......
Example :
例子 ：
// create an array of all the GET/POST variables you want to use
$fields = array('salutation','fname','lname','email','company','job_title','addr1','addr2','city','state',
'zip','country','phone','work_phone');
// convert each REQUEST variable (GET, POST or COOKIE) to a local variable
foreach($fields as $field)
${$field} = sanitize($_POST[$field]);
?>
Updated based on comments and downvotes ....
根据评论和反对票更新....
I am not, as was suggested below in the comments looping all data and adding to a variable - im looping pre-determined list of variables and storing them in variables ...
我不是，正如下面在循环所有数据并添加到变量的评论中所建议的那样 - 我循环预先确定的变量列表并将它们存储在变量中......
I have change the method of getting the data
我改变了获取数据的方法
