多选复选框显示表记录

Question

我想通过选择多个公司名称使用多选择复选框来过滤表格，表格将显示与所选复选框相关的记录。它只能选择一个复选框并仅显示一条相关记录，但不能选择多选复选框。

<form name="frmSearch" id="frmSearch" method="post" action=""> 

    <label>Company Name&nbsp;</label> 
    <select id="multiple-checkboxes" multiple="multiple" name="COMPANYNAME"> 
    <?php 
     $query = mysqli_query($conn_connection, "SELECT * FROM sl_iv GROUP by COMPANYNAME"); 

     while ($row = mysqli_fetch_assoc($query)) { 
      echo "<option value='".$row["COMPANYNAME"]."'".($row["COMPANYNAME"]==$_POST["COMPANYNAME"] ? " selected" : "").">".$row["COMPANYNAME"]."</option>"; 
     } 
    ?> 
    </select> 
    <br></br> 

    <button type="submit" id="submit" class="btn btn-info btn-sm"><span class="glyphicon glyphicon-search"></span> Search</button> 
    <a href="cust_due_list.php"> 
    <button type="button" class="btn btn-success btn-sm"><span class="glyphicon glyphicon-refresh"></span> RESET</button> 
    </a> 

    <br></br> 

    <table id="table"> 
    <center> 
     <thead> 
     <tr class="item-row"> 
      <th width="15%" style="text-align:center"><span>Doc No.</span></th> 
      <th width="10%" style="text-align:center"><span>Due</span></th> 
      <th width="5%" style="text-align:center"><span>Age</span></th> 
      <th width="20%" style="text-align:center"><span>Customer Name</span></th> 
      <th width="10%" style="text-align:center"><span>Ammount</span></th> 
      <th width="10%" style="text-align:center"><span>Payment</span></th> 
      <th width="10%" style="text-align:center"><span>OutStanding</span></th> 
     </tr> 
     </thead> 
    </center> 

    <tbody> 
     <?php 
        if(isset ($_POST['COMPANYNAME'])) 
        { 
         $COMPANYNAME = $_POST['COMPANYNAME']; 
         $fetch = "SELECT sl_iv.DOCDATE, ar_iv.DUEDATE, payment_terms.terms, sl_iv.DOCNO, sl_iv.COMPANYNAME, ar_iv.DOCAMT, ar_iv.PAYMENTAMT FROM `sl_iv` Inner Join `ar_iv` On ar_iv.DOCNO = sl_iv.DOCNO Inner Join `payment_terms` On ar_iv.TERMS = payment_terms.id WHERE sl_iv.COMPANYNAME = '".$COMPANYNAME."' or sl_iv.DOCDATE <= '".$from."'"; 
         $result = mysqli_query($conn_connection,$fetch)or die("MySQL error: " . mysqli_error($conn_connection) . "<hr>\nQuery: $fetch"); 
        } 
        if (mysqli_num_rows($result) > 0) { 
         // output data of each row 
         while($row = mysqli_fetch_assoc($result)) { 

         $docamt = $row['DOCAMT']; 

        ?> 
     <tr class="item-row"> 
      <td> 
      <input type="text" style="text-align:center; font-size:15px" class="form-control input-sm DocNo" id=DocNo0 " name="DocNo " value="<?php echo htmlspecialchars($row[ 'DOCNO']);?>" readonly></td> 
      <td> 
      <input type="text" style="text-align:center; font-size:15px" class="form-control input-sm DueDate" id="DueDate0" name="DueDate" value="<?php echo htmlspecialchars($row['DUEDATE']);?>" readonly> 
      </td> 
      <td> 
      <input type="text" style="text-align:center; font-size:15px" class="form-control input-sm DateAge" id="DateAge0" name="DateAge" value="<?php echo $dateage;?>" readonly> 
      </td> 
      <td> 
      <input type="text" style="text-align:center; font-size:15px" class="form-control input-sm CompanyName" id="CompanyName0" name="CompanyName" value="<?php echo htmlspecialchars($row['COMPANYNAME']);?>" readonly> 
      </td> 
      <td> 
      <input type="text" style="text-align:right; font-size:15px" class="form-control input-sm TotalAmt" id="TotalAmt0" name="TotalAmt" value="<?php echo htmlspecialchars($row['DOCAMT']);?>" readonly> 
      </td> 
      <td> 
      <input type="text" style="text-align:right; font-size:15px" class="form-control input-sm payment" id="payment0" name="payment" value="<?php echo htmlspecialchars($row['PAYMENTAMT']);?>" readonly> 
      </td> 
      <td> 
      <input type="text" style="text-align:right; font-size:15px" class="form-control input-sm Total_Outstanding" id="Total_Outstanding0" name="Total_Outstanding" value="<?php echo number_format((float)$outstanding, 2, '.', '');?>" readonly> 
      </td> 
     </tr> 
     <?php 
         } 
        } else { 
         echo "0 results"; 
        } 
        ?> 

    </tbody> 
    </table> 
</form> 



<script type="text/javascript"> 
    $(document).ready(function() { 
    $('#multiple-checkboxes').multiselect(); 
    }); 

</script> 

Answer 1

当您收到多重选择POST时，它以数组形式出现，所以您应该在您的mysql请求中使用“IN”运算符而不是比较。 尝试改变您的代码的一部分：

if(isset ($_POST['COMPANYNAME'])) { 
    $COMPANYNAME = $_POST['COMPANYNAME']; 
    $COMPANYNAME = is_array($COMPANYNAME) ? $COMPANYNAME : [$COMPANYNAME]; 

    $companiesParam = '\''. join("', '", $COMPANYNAME) . '\''; 
    $fetch = "SELECT sl_iv.DOCDATE, ar_iv.DUEDATE, payment_terms.terms, sl_iv.DOCNO, sl_iv.COMPANYNAME, ar_iv.DOCAMT, ar_iv.PAYMENTAMT FROM `sl_iv` Inner Join `ar_iv` On ar_iv.DOCNO = sl_iv.DOCNO Inner Join `payment_terms` On ar_iv.TERMS = payment_terms.id WHERE sl_iv.COMPANYNAME IN (".$companiesParam.") or sl_iv.DOCDATE <= '".$from."'"; 
    $result = mysqli_query($conn_connection,$fetch)or die("MySQL error: " . mysqli_error($conn_connection) . "<hr>\nQuery: $fetch"); 
}