PHP警告htmlentities（）期望参数1是字符串，数组给定

Question

我有一个表单将数据注入数据库。当用户点击submit按钮时，此错误显示在<input type=text>字段中。我一直在四处寻找解决方案，但我不知道如何解决这个问题。

警告：ヶ辆（）预计参数1是 串，阵列中 C中给出：RR \ XAMPP \ htdocs中\电子商务\助手\ helpers.php上线

helpers.php

<?php 
function display_errors($errors){ 
    $display = ' <ul class="bg-danger">'; 
    foreach($errors as $error){ 
     $display .='<li class="text-danger">'.$error. '</li> '; 
    } 
    $display .='</ul>'; 
    return $display; 
} 
function sanitize ($dirty){ 
    return htmlentities($dirty, ENT_QUOTES, "UTF-8"); 
} 

function money($number){ 
    return '$ '.number_format($number,2); 

} 

form.php的

<form action="products.php?add=1" method="POST" enctype="multipart/form-data"> 

    <div class='container_12'> 
    <div class="form-group col-md-3"> 
     <label for="prod_name">Product Name*:</label> 
     <input type="text" name="prod_name" id="prod_name" class="form-control" value="<?=((isset($_POST['prod_name']))?sanitize($_POST):' ');?>"> 

    </div> 
    <div class="form-group col-md-3"> 
     <label for="parent">Parent Category*:</label> 
     <select class="form-control" id="parent" name="parent"> 
      <option value=""<?=((isset($_POST['parent']) && $_POST['parent'] == '')?'selected':'');?>></option> 
       <?php while($parent = mysqli_fetch_assoc($parentQuery)): ?> 
      <option value=" <?=$parent['id'];?>"<?=((isset($_POST['parent']) && $_POST['parent'] == $parent['id'])?' select':'');?>><?=$parent['category_name'];?></option> 
       <?php endwhile; ?> 
     </select> 
    </div> 
    <div class='form-group col-md-3'> 
     <label for='child'>Second Category*:</label> 
     <select id='child' name='child' class='form-control'></select> 
    </div> 
    </div> 

    <div class='container_12'> 

     <div class='form-group col-md-3'> 
       <label for='list_price'>List Price(OPTIONAL): </label> 
       <input type="text" id="list_price" name="list_price" class="form-control" value="<?=((isset($_POST['list_price']))?sanitize($_POST['list_price']):'');?>"> 
     </div> 

     <div class="form-group col-md-3"> 
     <label for="price">Price*:</label> 
     <input type="text" id="price" name="price" class="form-control" value="<?=((isset($_POST['price']))?sanitize($_POST['price']):'');?>"> 
    </div> 

    <div class='form-group col-md-3'> 
       <label for='prod_width'>Width* (in inches):</label> 
       <input type="text" id="prod_width" name="prod_width" class="form-control" value="<?=((isset($_POST['prod_width']))?sanitize($_POST['prod_width']):'');?>"> 
     </div> 

    <div class='form-group col-md-3'> 
       <label for='prod_depth'>Height*(in inches):</label> 
       <input type="text" id="'prod_depth" name="'prod_depth" class="form-control" value="<?=((isset($_POST['prod_depth']))?sanitize($_POST['prod_depth']):'');?>"> 
     </div> 
    </div> 

    <div class='container_12'> 
    <div class='form-group col-md-3'> 
       <label for='prod_height'>Depth*(in inches):</label> 
       <input type="text" id="prod_height" name="prod_height" class="form-control" value="<?=((isset($_POST['prod_height']))?sanitize($_POST['prod_height']):'');?>"> 
     </div> 

    <div class='form-group col-md-3'> 
       <label for='prod_material'>Construction Material:</label> 
       <input type="text" id="prod_material" name="prod_material" class="form-control" value="<?=((isset($_POST['prod_material']))?sanitize($_POST['prod_material']):'');?>"> 

    </div> 

    <div class='form-group col-md-6'> 
     <label>Quantity * :</label> 
      <input type="text" id="quantity" name="quantity" class="form-control" value="<?=((isset($_POST['quantity']))?sanitize($_POST['quantity']):'');?>"> 

    </div> 
    </div> 

    <div class='container_12'> 
     <div class="form-group col-md-3"> <label for="image_1">Product Photo #1:</label> 
     <input type="file" name="image_1" id="image_1" class="form-control"> 
    </div> 
      <div class="form-group col-md-3"> <label for="image_2">Product Photo #2:</label> 
     <input type="file" name="image_2" id="image_2" class="form-control"> 
    </div> 
      <div class="form-group col-md-3"> <label for="image_3">Product Photo #3:</label> 
     <input type="file" name="image_3" id="image_3" class="form-control"> 
    </div> 
      <div class="form-group col-md-3"> <label for="image_4">Product Photo#4:</label> 
     <input type="file" name="image_4" id="image_4" class="form-control"> 
    </div> 

    </div> 



    <div class='container_12'> 
    <div class="form-group col-md-6"> 
     <label for="description">Description:</label> 
     <textarea id="description" name="description" class="form-control" rows="6"><?=((isset($_POST['description']))?sanitize($_POST['description']):'');?></textarea> 
    </div> 



     <div class="form-group col-md-6"> 
     <label for="care_instructions">Care Instructions*:</label> 
     <textarea id="care_instructions" name="care_instructions" class="form-control" rows="6"><?=((isset($_POST['care_instructions']))?sanitize($_POST['care_instructions']):'');?></textarea> 
     </div></div> 

    <div class='container_12'> 
     <div class="form-group pull-right"> 
    <input type='submit' value='Add Product' class='form-control btn-success pull-right'> 
     </div></div> 
         </form> 

Answer 1

你传入整个$ _ POST变量在产品名称中输入序列化（这就是为什么错误说“给定的数组”）。

检查这一行：

<input type="text" name="prod_name" id="prod_name" class="form-control" value="<?=((isset($_POST['prod_name']))?sanitize($_POST):' ');?>"> 

而与此更改：

<input type="text" name="prod_name" id="prod_name" class="form-control" value="<?=((isset($_POST['prod_name']))?sanitize($_POST['prod_name']):' ');?>">