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  • php原生实现图片上传和查看

    先上源码:upload_file.php

    <html>
    <body>
    
    <form action="upload_file.php" method="post"
    enctype="multipart/form-data">
    <label for="file">Filename:</label>
    <input type="file" name="file" id="file" /> 
    <br />
    <input type="submit" name="submit" value="Submit" />
    <br/>
    <img name="img" style=" 100px; height: 100px;
    border: 1px solid red;" src ="<?php echo "upload/" . $_FILES["file"]["name"]; ?>" />
    
    </form>
    
    <?php
    if ((($_FILES["file"]["type"] == "image/png")
    || ($_FILES["file"]["type"] == "image/jpeg")
    || ($_FILES["file"]["type"] == "image/pjpeg"))
    && ($_FILES["file"]["size"] < 20000000))
      {
      if ($_FILES["file"]["error"] > 0)
        {
        echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
        }
      else
        {
        
        // echo "Upload: " . $_FILES["file"]["name"] . "<br />";   
        // echo "Type: " . $_FILES["file"]["type"] . "<br />";
        // echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
        // echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";
        
    
        if (file_exists("upload/" . $_FILES["file"]["name"]))
          {
          echo $_FILES["file"]["name"] . " 已经保存. ";
          }
        else
          {
          move_uploaded_file($_FILES["file"]["tmp_name"],
          "upload/" . $_FILES["file"]["name"]);
          echo "存入: " . "upload/" . $_FILES["file"]["name"];
          }
        }
      }
    else
      {
      echo "Invalid file";
      }
    
    
    ?>
    
    </body>
    </html>

    显示效果如图;

    未上传:

    上传提交但没有该图片:

    上传提交但已有该图片:

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  • 原文地址:https://www.cnblogs.com/shenzikun1314/p/7953554.html
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