检索动态发布值

Question

我正在使用带有一些输入字段的小表来发布页面。 我想检索用户填写特定仪器编号的数据。

我的代码

<form name="frmDeposit" action="paymentdeposited.php" method="post"> 
    <table cellpadding="0" cellspacing="0" border="0" id="table" class="tinytable" style="width:700px;"> 
     <thead> 
      <tr> 
       <th><h3>Email</h3></th> 
<th><h3>Amount Paid</h3></th> 
<th><h3>Instrument Type</h3></th> 
<th><h3>Instrument No.</h3></th> 
<th><h3>Date Paid</h3></th> 
<th class="nosort"><h3>Date Deposited</h3></th> 
<th class="nosort"><h3>Bank Name</h3></th> 
<th class="nosort"><h3>Slip No.</h3></th> 
<th class="nosort"><h3>Submit</h3></th> 
      </tr> 
     </thead> 
     <tbody> 
<?php 
foreach($paymentsdeposited as $paymentdeposited) 
{ 


?> 
      <tr> 
       <td><?php echo $paymentdeposited[email];?></td> 
       <td><?php echo $paymentdeposited[amount];?></td> 
<td><?php echo $paymentdeposited[instrument];?></td> 
       <td><?php echo $paymentdeposited[instrumentnumber];?></td> 
<td><?php echo $paymentdeposited[dated];?></td> 
<td><input type="text" name="txtDateDeposited_<?php echo $paymentdeposited[pk_paymentinstrumentid];?>" class="field date-pick"/></td> 
<td><input type="text" name="txtBankName_<?php echo $paymentdeposited[pk_paymentinstrumentid];?>" class="field"/></td> 
<td><input type="text" name="txtSlipNo_<?php echo $paymentdeposited[pk_paymentinstrumentid];?>" class="field"/><input type="hidden" name="txtPaymentInstrumentNo_<?php echo $paymentdeposited[pk_paymentinstrumentid];?>" value="<?php echo $paymentdeposited[pk_paymentinstrumentid];?>" class="field"/></td> 
<td><input type="submit" name="btnSubmit1" value="Submit"/></td> 

      </tr> 
<?php 
} 
?> 

     </tbody> 
    </table> 

的print_r的命令输出

Array 
(
[txtDateDeposited_57] => 2010-05-07 
[txtBankName_57] => pnb 
[txtSlipNo_57] => 121 
[txtPaymentInstrumentNo_57] => 57 
[btnSubmit1] => Submit 
[txtDateDeposited_51] => 
[txtBankName_51] => 
[txtSlipNo_51] => 
[txtPaymentInstrumentNo_51] => 51 
[txtDateDeposited_52] => 
[txtBankName_52] => 
[txtSlipNo_52] => 
[txtPaymentInstrumentNo_52] => 52 
[txtDateDeposited_45] => 
[txtBankName_45] => 
[txtSlipNo_45] => 
[txtPaymentInstrumentNo_45] => 45 
[txtDateDeposited_47] => 
[txtBankName_47] => 
[txtSlipNo_47] => 
[txtPaymentInstrumentNo_47] => 47 
) 

我要检索的值，为此他已经进入价值ID 57。但我无法构建检索此值的逻辑。我想让它变得动态。

Answer 1

使用explode。例如： -

foreach ($POST AS $key => $value) { 
    if (strpos ($key, '_') !== false) { 
     list($field, $id) = explode ('_', $key, 2); 

     if ($value) { 
      var_dump ($field, $id, $value); 
     } 
    } 
} 

或者，如果你知道ID：

var_dump ($_POST['txtPaymentInstrumentNo_'.$Id]); 

编辑

简单的代码。 thx不要吉姆。

Answer 2

我会用数组符号格式化输入名称：

<td><input type="text" name="txtDateDeposited[<?php echo $paymentdeposited[pk_paymentinstrumentid];?>]" class="field date-pick"/></td> 

让您得到的数据可以得到访问的

$_REQUEST['txtDateDeposited']['57'] 

更新：

foreach($_POST as $key => $value) { 
    $keyPieces = explode("_", $key); 
    $field = implode("_", array_slice($keyPieces, 0, count($keyPieces)-1)); 
    $id = $keyPieces[count($keyPieces)-1]; 
    // txtDateDeposited_57 becomes 
    // $id -> 57 
    // $field -> txtDateDeposited 
} 

如果您确定你只用一个下划线，然后：

foreach($_POST as $key => $value) { 
     $keyPieces = explode("_", $key); 
     $field = $keyPieces[0]; 
     $id = $keyPieces[1]; 
     // txtDateDeposited_57 becomes 
     // $id -> 57 
     // $field -> txtDateDeposited 
    } 

也可以工作。

请注意，对于任何使用上述方法，我发现把数字/标识符放在第一位更好，这样你就可以做$ pieces [0]而不是对数组进行计数。另外，你的array_slice（$ pieces，1）会在没有额外计数的情况下为你取出。