用PHP处理图片文件的上传

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1.html文件

form表单注意。enctype属性

<form action="goods/goodsAdd.action.php" method="POST" enctype="multipart/form-data">

代码：

<?php
		require('../../public/common/config.php');

		$sqlClass = "select * from sort";

		$rstClass = mysqli_query($conn,$sqlClass);

?>
<p>

	<h4>添加商品</h4>

	<form action="goods/goodsAdd.action.php" method="POST" enctype="multipart/form-data">

		<ul>
			<li>
				<label for="goodsname">商品名</label>

				<input type="text" name="goodsname" id="goodsname">
			</li>

			<li>
				<label for="goodsprice">商品价格</label>

				<input type="text" name="goodsprice" id="goodsprice">
			</li>

			<li>
				<label for="goodsort">商品库存</label>

				<input type="text" name="goodsort" id="goodsort">
			</li>

			<li>
				<p>产品分类</p>

				<select name="brand_id">
					<?php

						while ($rowClass=mysqli_fetch_assoc($rstClass)) {

							echo "<option disabled>{$rowClass['name']}</option>";

							$sqlBrand = "select * from brand where sort_id='{$rowClass[id]}' ";

							$rstBrand = mysqli_query($conn,$sqlBrand);

							while ($rowBrand=mysqli_fetch_assoc($rstBrand)) {
								
								echo "<option value='{$rowBrand['id']}'>  |-{$rowBrand['name']}</option>";
							}
						}
					?>
				</select>
			</li>

			<li>

				<p>货架</p>

				<label for="upshelf">上架s</label>

				<input type="radio" name="shelf" id="upshelf" value="1" checked>

				<label for="downshelf">下架d</label>

				<input type="radio" name="shelf" id="downshelf" value="0">
			</li>

			<li>
				<input type="file" name="img" value="">
			</li>

		</ul>

		<input type="submit" value="添加商品">

	</form>

</p>

查看数据：

    echo "<pre>";

      print_r($_POST);

      echo "</pre>";

      echo "<pre>";

      print_r($_FILES);

      echo "</pre>";

      exit;

测试如图：

。php文件代码：

<?php
  
	require('../../public/common/config.php');

      // echo "<pre>";

      // print_r($_POST);

      // echo "</pre>";

      // echo "<pre>";

      // print_r($_FILES);

      // echo "</pre>";

      // exit;

      $name = $_POST['goodsname'];
      $price = $_POST['goodsprice'];
      $sort = $_POST['goodsort'];
      $shelf = $_POST['shelf'];
      $brand_id = $_POST['brand_id'];

      //图片上传
      
      $src = $_FILES['img']['tmp_name'];

      $name = $_FILES['img']['name'];

      $ext = array_pop(explode('.', $name));

      $dst = '../../public/uploads/'.time().mt_rand().'.'.$ext;

      if(move_uploaded_file($src, $dst)){
        echo "upload success";

        //图片缩放200*200
        
      }else{
        echo "upload  error";
      }

?>

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