php 使用php通过POST提交多维数组
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Submitting a multidimensional array via POST with php
提问by Fireflight
I have a php form that has a known number of columns (ex. top diameter, bottom diameter, fabric, colour, quantity), but has an unknown number of rows, as users can add rows as they need.
我有一个 php 表单，它的列数已知（例如顶部直径、底部直径、面料、颜色、数量），但行数未知，因为用户可以根据需要添加行。
I've discovered how to take each of the fields(columns) and place them into an array of their own.
我发现了如何获取每个字段（列）并将它们放入自己的数组中。
<input name="topdiameter['+current+']" type="text" id="topdiameter'+current+'" size="5" />
<input name="bottomdiameter['+current+']" type="text" id="bottomdiameter'+current+'" size="5" />
So what I end up with in the HTML is:
所以我最终在 HTML 中得到的是：
<tr>
<td><input name="topdiameter[0]" type="text" id="topdiameter0" size="5" /></td>
<td><input name="bottomdiameter[0]" type="text" id="bottomdiameter0" size="5" /></td>
</tr>
<tr>
<td><input name="topdiameter[1]" type="text" id="topdiameter1" size="5" /></td>
<td><input name="bottomdiameter[1]" type="text" id="bottomdiameter1" size="5" /></td>
</tr>
...and so on.
What I would like to do now is take all the rows and columns put them into a multidimensional array and email the contents of that to the client (preferably in a nicely formatted table). I haven't been able to really comprehend how to combine all those inputs and selects into a nice array.
我现在想做的是将所有行和列放入一个多维数组中，并将其内容通过电子邮件发送给客户端（最好是格式良好的表格）。我一直无法真正理解如何将所有这些输入和选择组合成一个漂亮的数组。
At this point, I'm going to have to try to use several 1D arrays, although I have the idea that using a single 2D array would be a better practice than using several 1D arrays.
在这一点上，我将不得不尝试使用多个一维数组，尽管我认为使用单个二维数组比使用多个一维数组更好。
回答by DisgruntledGoat
On submitting, you would get an array as if created like this:
提交时，您会得到一个数组，就像这样创建的：
$_POST['topdiameter'] = array( 'first value', 'second value' );
$_POST['bottomdiameter'] = array( 'first value', 'second value' );
However, I would suggest changing your form names to this format instead:
但是，我建议将您的表单名称更改为这种格式：
name="diameters[0][top]"
name="diameters[0][bottom]"
name="diameters[1][top]"
name="diameters[1][bottom]"
...
Using that format, it's much easier to loop through the values.
使用这种格式，循环遍历值要容易得多。
if ( isset( $_POST['diameters'] ) )
{
echo '<table>';
foreach ( $_POST['diameters'] as $diam )
{
// here you have access to $diam['top'] and $diam['bottom']
echo '<tr>';
echo ' <td>', $diam['top'], '</td>';
echo ' <td>', $diam['bottom'], '</td>';
echo '</tr>';
}
echo '</table>';
}
回答by Laimoncijus
you could submit all parameters with such naming:
您可以使用这样的命名提交所有参数：
params[0][topdiameter]
params[0][bottomdiameter]
params[1][topdiameter]
params[1][bottomdiameter]
then later you do something like this:
然后你做这样的事情：
foreach ($_REQUEST['params'] as $item) {
echo $item['topdiameter'];
echo $item['bottomdiameter'];
}
回答by Szél Lajos
I made a function which handles arrays as well as single GET or POST values
我做了一个处理数组以及单个 GET 或 POST 值的函数
function subVal($varName, $default=NULL,$isArray=FALSE ){ // $isArray toggles between (multi)array or single mode
$retVal = "";
$retArray = array();
if($isArray) {
if(isset($_POST[$varName])) {
foreach ( $_POST[$varName] as $var ) { // multidimensional POST array elements
$retArray[]=$var;
}
}
$retVal=$retArray;
}
elseif (isset($_POST[$varName]) ) { // simple POST array element
$retVal = $_POST[$varName];
}
else {
if (isset($_GET[$varName]) ) {
$retVal = $_GET[$varName]; // simple GET array element
}
else {
$retVal = $default;
}
}
return $retVal;
}
Examples:
例子：
$curr_topdiameter = subVal("topdiameter","",TRUE)[3];
$user_name = subVal("user_name","");
