从具有动态元素名称的表单中检索帖子值 [英] retrieving post values from form with dynamic element names

问题描述

我正在尝试从表单中检索发布值，其中元素名称基于记录集中的值.形式如下:

I'm trying to retrieve the post values from a form where the element names are based on values from a recordset. Here is the form:

$recordID = $_GET["recordID"];
$colour_result = mysqli_query($con,"SELECT colour_variation.*, colours.* FROM colour_variation INNER JOIN colours ON colour_variation.colour_id=colours.colour_id WHERE product_code='$recordID'");
while($colour_row = mysqli_fetch_array($colour_result))
  {
 ?> 
<tr><td valign="middle"><img src="resources/images/colours/<?php echo $colour_row['colour_image']; ?>" width="35" height="35"></td><td width="100"><?php echo $colour_row['colour_name']; ?></td>
    <td><center><?php if($colour_row['xs'] !== '') { echo('<input type="text" size="2" name="xs_<?php echo $colour_row[colour_name]; ?>" id="xs_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['s'] !== '') { echo('<input type="text" size="2" name="s_<?php echo $colour_row[colour_name]; ?>" id="s_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['m'] !== '') { echo('<input type="text" size="2" name="m_<?php echo $colour_row[colour_name]; ?>" id="m_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['l'] !== '') { echo('<input type="text" size="2" name="l_<?php echo $colour_row[colour_name]; ?>" id="l_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['xl'] !== '') { echo('<input type="text" size="2" name="xl_<?php echo $colour_row[colour_name]; ?>" id="xl_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['xxl'] !== '') { echo('<input type="text" size="2" name="xxl_<?php echo $colour_row[colour_name]; ?>" id="xxl_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['xxxl'] !== '') { echo('<input type="text" size="2" name="xxxl_<?php echo $colour_row[colour_name]; ?>" id="xxxl_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>
    <td><center><?php if($colour_row['one_size'] !== '') { echo('<input type="text" size="2" name="one_size_<?php echo $colour_row[colour_name]; ?>" id="one_size_<?php echo $row[colour_name]; ?>" placeholder="Qty">');
     } else { echo(''); } ?> </center></td>

    </tr>
    <?php } ?>
</table>
<input type="hidden" name="product_code" value="<?php echo $row_products['product_code']; ?>" >

我试图通过这种方法将它们释放出来，但无法正常工作:

I tried this to get them out but its not working:

<?php 
$product_code=$_POST["product_code"];
 foreach ($_POST as $key => $value) {
        if (substr($key, 0, 2) == "xs_") {
            $colour_name[str_replace("xs_", "", $key)] = $value;
        }
        echo $key;
        echo '<br />';
        echo $value;
    }


?>

每种产品可以有任何数量的颜色.对于将值显示在下一页并按颜色/尺寸选择数量的任何帮助，将不胜感激.

there could be any number of colours per product. Any help on getting the values to display on next page with the qty selected per colour/size would be much appreciated.

谢谢

推荐答案

首先我要更改

name="s_<?php echo $colour_row[colour_name]; ?>"

等到

name="attributes[s_<?php echo $colour_row[colour_name]; ?>]"

并使用以下PHP

if( !empty($_POST['attributes']) ) {
    foreach( $_POST['attributes'] as $sKey => $iQty ) {
        var_dump( $sKey );
        var_dump( $iQty );
    }
} else {
    die( 'Just for debuging. attributes-array was empty' );
}

甚至更好

使用

name="attributes[xxl][color]" eg. name="attributes[xxl][<?php echo $colour_row[colour_name]; ?>]"

还有

if( !empty($_POST['attributes']) ) {
    foreach( $_POST['attributes'] as $sSize => $aData ) {
        var_dump( $sSize );
        var_dump( $aData );
    }
}

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