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PHP资料上传

WBOY
Release: 2016-06-13 13:25:39
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PHP文件上传

必须确保服务器目标文件夹的属性为可写:chmod 777 -R dir

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主要步骤:
1、根据网页中设定位置,自建一个用于存储文件的文件夹cyupload
2、修改cyupload的权限,进入/tmp文件夹中,chmod 777 cyupload -R
3、参考http://www.w3schools.com/php/php_file_upload.asp 的??? 代码,分别建立upload.html 和 upload.php
4、根据需求将upload.php中的判断语句修改
5、修改php.ini文件,修改上传文件大小限制。
file_uploads = on ;是否允许通过HTTP上传文件的开关。默认为ON即是开
upload_tmp_dir ;文件上传至服务器上存储临时文件的地方,如果没指定就会用系统默认的临时文件夹
upload_max_filesize = 200m ;望文生意,即允许上传文件大小的最大值。默认为2M
post_max_size = 200m ;指通过表单POST给PHP的所能接收的最大值,包括表单里的所有值。默认为8M
一般地,设置好上述四个参数后,上传但如果要上传>8M的大体积文件,只设置上述四项还一定能行的通。
进一步配置以下的参数
max_execution_time = 0 ;
max_input_time = 2400 ;每个PHP页面接收数据所需的最大时间默认60秒
memory_limit = 256m ;每个PHP页面所吃掉的最大内存,默认8M
把上述参数修改后,在网络所允许的正常情况下,就可以上传大体积文件了


详细代码:upload.html

<html>
<body>
<form. enctype="multipart/form-data"  action="up.php" method="post">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="upload">
</form>
</body>
</html>

<!--enctype="multipart/form-data" 该属性在form中必须定义才能上传-->


upload.php


<?php
if ($_FILES["file"]["size"] < 210000000)
  {
  if ($_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("/tmp/cyupload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "/tmp/cyupload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "/tmp/cyupload/" . $_FILES["file"]["name"];
      }
    }
  }
else
  {
  echo "Invalid file";
  }
?>

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