19 十五章 PHP上传函数 上传 is_uploaded_file()

yuweixian4230

PHP中 copy函数
http://www.w3school.com.cn/php/func_filesystem_copy.asp

1. <?php
   
2.         echo copy("source.txt","/usr/local/apache/htdocs/class/classnotes/destination.txt");
   
3. ?>

如果成功实现复制的话




PHP实现文件上传

is_uploaded_file()函数确定右输入参数filename知道你的文件是否使用POST方法上传。
boolean is_uploaded_file(string filename)


test1.php

1. <form action="upload1.php" enctype="multipart/form-data" method="post">
   
2.      Last Name:<br /> <input type="text" name="name" value="" /><br />
   
3.      Class Notes:<br /> <input type="file" name="classnotes" value="" /><br />
   
4.      <p><input type="submit" name="submit" value="Submit Notes" /></p>
   
5. </form>

upload1.php


使用is_uploaded_file()函数确定表单域指定的文件确实是通过表单上传的文件。

basename($classnotes);

1. <?php
   
2. if (is_uploaded_file($_FILES['classnotes']['tmp_name'])) {
   
3.      copy($_FILES['classnotes']['tmp_name'],
   
4.               "/usr/local/apache/htdocs/class/classnotes/".$_FILES['classnotes']['name']);
   
5. } else {
   
6.      echo "<p>Potential script abuse attempt detected.</p>";
   
7. }
   
8. ?>

2.移动上传文件
 
   move_uploaded_file(string filename, string destination); 也可以实现文件上传

upload1.php

1. <?php
   
2. //if (is_uploaded_file($_FILES['classnotes']['tmp_name'])) {
   
3.     // copy($_FILES['classnotes']['tmp_name'],
   
4.      // "/usr/local/apache/htdocs/class/classnotes/".$_FILES['classnotes']['name']);
   
5.     move_uploaded_file($_FILES['classnotes']['tmp_name'],
   
6.              "/usr/local/apache/htdocs/class/classnotes/".$_FILES['classnotes']['name']);
   
7. //} else {
   
8.     // echo "<p>Potential script abuse attempt detected.</p>";
   
9. //}
   
10. ?>