Question

我有这两个文件，我正在更新一个表但是在update.php文件上我得到错误说明注意：未定义索引：pname，$ pcode ...... $pname = $_POST["pname"];这里我存储pname pname变量中的值。但它显示错误

                        <address>

                           <div class="control-group">



                                    <label class="control-label">Product Name:</label>
                                    <div class="controls">
                                        <input id="pname" name="pname" type="text" value="<?php echo $PName; ?>"
                                        class="input-xlarge">
                                        <p class="help-block"></p>
                                    </div>
                                </div>

                                <div class="control-group">
                                    <label class="control-label">Product Code:</label>
                                    <div class="controls">
                                        <input id="code" name="pcode" type="text"  value="<?php echo $PCode; ?>"
                                        class="input-xlarge">

                                    </div>
                                </div>


                                <div class="control-group">
                                    <label class="control-label">Product Price:</label>
                                    <div class="controls">
                                        <input id="price" name="pprice" type="text" value="<?php echo $PPrice; ?>"
                                        class="input-xlarge">

                                    </div>
                                </div>


                            <div class="control-group">
                                    <label class="control-label">Availability:</label>
                                    <div class="controls">
                                        <select id="stock" name="stock" class="input-xlarge">

                                            <option value="1" selected="selected">Available</option>
                                            <option value="0">Not Available</option>

                                        </select>
                                    </div>
                          </div>

                              <div class="control-group">
                                    <label class="control-label">Product Description:</label>
                                    <div class="controls">
                                        <textarea rows="4" cols="50" name="description" > <?php echo $PDescription; ?> </textarea>
                                    </div>
                          </div>


                               <div class="control-group">
                                    Picture 1 :
                                    <div class="controls">
                                     <input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
                                    <input  type="file" name="pic1"
                                        class="input-xlarge">

                                    </div>
                          </div>

                           <div class="control-group">
                                    Picture 2 :
                                    <div class="controls">
                                     <input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
                                    <input  type="file" name="pic2"
                                        class="input-xlarge">

                                    </div>
                          </div>


                             <div class="control-group">
                                    Picture 3 :
                                    <div class="controls">
                                     <input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
                                    <input  type="file" name="pic3"
                                        class="input-xlarge">

                                    </div>
                          </div>


                              <div class="control-group">

                                    <div class="controls">
                                    <input type='hidden' name='id' value="<?php echo $ID; ?>"><br/>
                                        <input type="submit" value="UPDATE" class="btn-large" />

                                    </div>
                                </div>


                              </form>

Answer 1

您是否检查表单提交？

if (isset($_POST["pname"])) {
    // do all your form processing here.
}

Answer 2

$pname= (isset($_POST["pname"]) ? $_POST["pname"] : "");

这将检查$ _POST中是否存在pname，然后设置它。

您收到该错误，因为您没有设置$ _POST [“pname”]

php中的未定义索引使用post但它可以使用update.php上的请求来回显值

2 个答案: