php - if(is_uploaded_file($_FILES['file'][´tmp_name´]) 有问题，如果三个图像之一发生更改，则尝试更新信息
问题描述
制作了一个表格来编辑信息，如果我想更改三个图像中的一个，就会出现错误：
注意：未定义的索引：第 345 行 /opt/lampp/htdocs/m-dev-store/admin_area/edit_product.php 中的文件 注意：尝试访问 /opt/lampp/htdocs/m- 中 null 类型值的数组偏移量第 345 行的 dev-store/admin_area/edit_product.php
即使我没有更改任何图像，只是尝试更改标题，例如，仍然一样
我该如何解决？
这些错误位于以下行中包含的代码的底部：if(is_uploaded_file($_FILES['file']['tmp_name'])){
<?php
if(isset($_GET['edit_product'])){
$edit_id = $_GET['edit_product'];
$get_p = "select * from products where product_id='$edit_id'";
$run_edit = mysqli_query($con,$get_p);
$row_edit = mysqli_fetch_array($run_edit);
$p_id = $row_edit['product_id'];
$p_title = $row_edit['product_title'];
$p_cat = $row_edit['p_cat_id'];
$cat= $row_edit['cat_id'];
$manufacturer = $row_edit['manufacturer_id'];
$p_image1 = $row_edit['product_img1'];
$p_image2 = $row_edit['product_img2'];
$p_image3 = $row_edit['product_img3'];
$p_price = $row_edit['product_price'];
$p_keywords = $row_edit['product_keywords'];
$p_desc = $row_edit['product_desc'];
}
$get_manufacturer = "select * from manufacturers where manufacturer_id='$manufacturer'";
$run_manufacturer = mysqli_query($con,$get_manufacturer);
$row_manufacturer = mysqli_fetch_array($run_manufacturer);
$manufacturer_title = $row_manufacturer['manufacturer_title'];
$get_p_cat = "select * from product_categories where p_cat_id='$p_cat'";
$run_p_cat = mysqli_query($con,$get_p_cat);
$row_p_cat = mysqli_fetch_array($run_p_cat);
$p_cat_title = $row_p_cat['p_cat_title'];
$get_cat = "select * from categories where cat_id='$cat'";
$run_cat = mysqli_query($con,$get_cat);
$row_cat = mysqli_fetch_array($run_cat);
$cat_title = $row_cat['cat_title'];
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title> Insert Products </title>
</head>
<body>
<div class="row"><!-- row Begin -->
<div class="col-lg-12"><!-- col-lg-12 Begin -->
<ol class="breadcrumb"><!-- breadcrumb Begin -->
<li class="active"><!-- active Begin -->
<i class="fa fa-dashboard"></i> Dashboard / Edit Product
</li><!-- active Finish -->
</ol><!-- breadcrumb Finish -->
</div><!-- col-lg-12 Finish -->
</div><!-- row Finish -->
<div class="row"><!-- row Begin -->
<div class="col-lg-12"><!-- col-lg-12 Begin -->
<div class="panel panel-default"><!-- panel panel-default Begin -->
<div class="panel-heading"><!-- panel-heading Begin -->
<h3 class="panel-title"><!-- panel-title Begin -->
<i class="fa fa-money fa-fw"></i> Insert Product
</h3><!-- panel-title Finish -->
</div> <!-- panel-heading Finish -->
<div class="panel-body"><!-- panel-body Begin -->
<form method="post" class="form-horizontal" enctype="multipart/form-data"><!-- form-horizontal Begin -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Title </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_title" type="text" class="form-control" required value="<?php echo $p_title; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Manufacturer </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<select name="manufacturer" class="form-control"><!-- form-control Begin -->
<option value="<?php echo $manufacturer; ?>"> <?php echo $manufacturer_title; ?> </option>
<?php
$get_manufacturer = "select * from manufacturers";
$run_manufacturer = mysqli_query($con,$get_manufacturer);
while ($row_manufacturer=mysqli_fetch_array($run_manufacturer)){
$manufacturer_id = $row_manufacturer['manufacturer_id'];
$manufacturer_title = $row_manufacturer['manufacturer_title'];
echo "
<option value='$manufacturer_id'> $manufacturer_title </option>
";
}
?>
</select><!-- form-control Finish -->
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Category </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<select name="product_cat" class="form-control"><!-- form-control Begin -->
<option value="<?php echo $p_cat; ?>"> <?php echo $p_cat_title; ?> </option>
<?php
$get_p_cats = "select * from product_categories";
$run_p_cats = mysqli_query($con,$get_p_cats);
while ($row_p_cats=mysqli_fetch_array($run_p_cats)){
$p_cat_id = $row_p_cats['p_cat_id'];
$p_cat_title = $row_p_cats['p_cat_title'];
echo "
<option value='$p_cat_id'> $p_cat_title </option>
";
}
?>
</select><!-- form-control Finish -->
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Category </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<select name="cat" class="form-control"><!-- form-control Begin -->
<option value="<?php echo $cat; ?>"> <?php echo $cat_title; ?> </option>
<?php
$get_cat = "select * from categories";
$run_cat = mysqli_query($con,$get_cat);
while ($row_cat=mysqli_fetch_array($run_cat)){
$cat_id = $row_cat['cat_id'];
$cat_title = $row_cat['cat_title'];
echo "
<option value='$cat_id'> $cat_title </option>
";
}
?>
</select><!-- form-control Finish -->
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Image 1 </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_img1" type="file" class="form-control">
<br>
<img width="70" height="70" src="product_images/<?php echo $p_image1; ?>" alt="<?php echo $p_image1; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Image 2 </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_img2" type="file" class="form-control">
<br>
<img width="70" height="70" src="product_images/<?php echo $p_image2; ?>" alt="<?php echo $p_image2; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Image 3 </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_img3" type="file" class="form-control form-height-custom">
<br>
<img width="70" height="70" src="product_images/<?php echo $p_image3; ?>" alt="<?php echo $p_image3; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Price </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_price" type="text" class="form-control" required value="$<?php echo $p_price; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Keywords </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="product_keywords" type="text" class="form-control" required value="<?php echo $p_keywords; ?>">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"> Product Desc </label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<textarea name="product_desc" cols="19" rows="6" class="form-control">
<?php echo $p_desc; ?>
</textarea>
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
<div class="form-group"><!-- form-group Begin -->
<label class="col-md-3 control-label"></label>
<div class="col-md-6"><!-- col-md-6 Begin -->
<input name="update" value="Update Product" type="submit" class="btn btn-primary form-control">
</div><!-- col-md-6 Finish -->
</div><!-- form-group Finish -->
</form><!-- form-horizontal Finish -->
</div><!-- panel-body Finish -->
</div><!-- canel panel-default Finish -->
</div><!-- col-lg-12 Finish -->
</div><!-- row Finish -->
<script src="js/tinymce/tinymce.min.js"></script>
<script>tinymce.init({ selector:'textarea'});</script>
</body>
</html>
<?php
if(isset($_POST['update'])){
$product_title = $_POST['product_title'];
$product_cat = $_POST['product_cat'];
$cat = $_POST['cat'];
$manufacturer_id = $_POST['manufacturer'];
$product_price = $_POST['product_price'];
$product_keywords = $_POST['product_keywords'];
$product_desc = $_POST['product_desc'];
if(is_uploaded_file($_FILES['file']['tmp_name'])){
$product_img1 = $_FILES['product_img1']['name'];
$product_img2 = $_FILES['product_img2']['name'];
$product_img3 = $_FILES['product_img3']['name'];
$temp_name1 = $_FILES['product_img1']['tmp_name'];
$temp_name2 = $_FILES['product_img2']['tmp_name'];
$temp_name3 = $_FILES['product_img3']['tmp_name'];
move_uploaded_file($temp_name1,"product_images/$product_img1");
move_uploaded_file($temp_name2,"product_images/$product_img2");
move_uploaded_file($temp_name3,"product_images/$product_img3");
$update_product = "update products set p_cat_id='$product_cat', cat_id='$cat', manufacturer_id='$manufacturer_id',date=NOW(),product_title='$product_title', product_img1='$product_img1', product_img2='$product_img2', product_img3='$product_img3',product_keywords='$product_keywords',product_desc='$product_desc', product_price='$product_price' where product_id='$p_id'";
$run_product = mysqli_query($con,$update_product);
if($run_product){
echo "<script>alert('Your Product Has Been Updated!')</script>";
echo "<script>window.open('index.php?view_products','_self')</script>";
}
}else{
$update_product = "update products set p_cat_id='$product_cat', cat_id='$cat', manufacturer_id='$manufacturer_id',date=NOW(),product_title='$product_title', product_keywords='$product_keywords',product_desc='$product_desc', product_price='$product_price' where product_id='$p_id'";
$run_product = mysqli_query($con,$update_product);
if($run_product){
echo "<script>alert('Your Product Has Been Updated!')</script>";
echo "<script>window.open('index.php?view_products','_self')</script>";
}
}
}
?>
<?php } ?>
解决方案
首先Undefined index意味着在数组中找不到该条目。正如我所看到的，您有 3 个元素可以选择文件。
<input name="product_img2" type="file" class="form-control">
和
<input name="product_img2" type="file" class="form-control">
AMD
<input name="product_img3" type="file" class="form-control form-height-custom">
但是您要获取['file']['tmp_name']
此数组，您需要获取您尝试发布或获取的文件元素的名称。所以如果你想从这里上传文件
<input name="product_img2" type="file" class="form-control">
product_img2那么您需要在文件数组示例中取其名称：
if(is_uploaded_file($_FILES['product_img2']['tmp_name'])){
您可以根据您的页面更改它
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