19 十五章 PHP上传函数 上传 is_uploaded_file()

PHP中 copy函数

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

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

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

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

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

<?php
//if (is_uploaded_file($_FILES['classnotes']['tmp_name'])) {
    // copy($_FILES['classnotes']['tmp_name'],
     //         "/usr/local/apache/htdocs/class/classnotes/".$_FILES['classnotes']['name']);
    move_uploaded_file($_FILES['classnotes']['tmp_name'],
             "/usr/local/apache/htdocs/class/classnotes/".$_FILES['classnotes']['name']);
//} else {
    // echo "Potential script abuse attempt detected.";
//}
?>