预备知识:Javascript, PHP(少量)/Perl(少量)!
测试环境:Windows2000 + IIS5 + PHP (Win98 + PWS + PHP3 失败,估计是配置出了问题)
目录结构:
/wwwroot/cgi-bin/fileup.php (文件接收)
/wwwroot/www/test/phpfileup.htm (文件提交)
/wwwroot/www/test/tmp/ (默认保存目录)
前言:文件上传,简单又麻烦。下面是上传文件的提交页面,利用该页面你不仅可以生成 1000 个上传文件框(实际是任意多个 0~n ),而且可分别指出它们的保存路径。
提交页面的文件输入框为命名为: file0,file1,...file100,...fileN
提交页面的文件路径框为命名为: path0,path1,...path100,...pathN
由于页面的生成非常简单,所以就不在此多解释了,用 javascript 定义了两个函数,check() 用于提交页面,create()用于生成文件上传框。如果你有什么更好的建议或有什么疑问请 Email: gearsoft@netease.com
phpfileup.htm
--------------------------------------------------------
var i=0;
function create(){
var sfrm = document.frm1.innerHTML;
var icnt = cnt.value;
for(j=0;j
sfrm = sfrm + "请选择文件 "+i+" ";
sfrm = sfrm + " 路径:";
sfrm = sfrm + "
";
i++;
}
document.frm1.innerHTML = sfrm;
document.frm1.cnt.value=i;
}
请输入要上传文件的数量:
文件提交页面既已生成,下面任务就很明确了:将提交的文件内容保存到服务器上。
下面我们用两种方法来实现这个功能:
1. 用 PHP 来保存:
我们先定义一个文件保存函数 fup() 它有两个参数:
$filename: 文件内容
$fname: 文件名(包含路径)
剩下的就是写一个循环将文件依次写入服务器。这里要简单说明一下:
PHP 对于上传文件的处理是这样的:如果提交的文件框我为 file0, 那么提交给 PHP 的文件内容保存在变量 $file0 中,而文件名则保存在 $file0_name 中。这样在这个循环中我要做的就是将提交页面提交的内容分解出来,实现过程请看下面的代码。
fileup.php
----------------------------------------------------------------------
function fup($filename,$fname)
{ If($filename != "none") {
copy($filename,$fname);
unlink($filename);
}
}
for($i=0;$i{
$ffnn="file".$i;
$ffnnname=$ffnn."_name";
$ffpath="path".$i;
//print $$ffnn;
print $$ffnnname;
print "
";
fup($$ffnn,$$ffpath.$$ffnnname); //"../www/test/tmp/"
}
?>
----------------------------------------------------------------------
2. 用 PERL 来保存:
它们实现的原理完全一样,在此不多说,请看代码:
fileup.cgi(fileup.pl)
----------------------------------------------------------------------
#!/usr/bin/perl
use CGI qw/:standard/;
if ($ENV{'CONTENT_TYPE'} !~ /multipart/form-data/) {
print "Cache-Control: no-cachenPragma: no-cachen" .
"Content-Type: text/htmlnn" .
"
exit 0;
}
$cntfile=param('cnt');
print header;
print start_html;
#print "Receiving Please wait....";
&g_head;
#$writed = '../www/test/tmp/';
for ($i=0;$i$paramfile = 'file'.$i;
$parampath='path'.$i;
$writed=param($parampath);
&upfile;
&g_body;
}
&g_bott;
#
sub upfile
{
$maxdata = 512000;
# $writed = '../www/test/tmp/';
$strRFname=reverse $xfile;
$intIndex=index($strRFname,'\');
$strNetFname=substr($strRFname,0,$intIndex);
$strNetFname=scalar reverse $strNetFname;
if((stat $xfile)[7]>$maxdata){
print "Status: 411 Size Not Allowedn" .
"Content-Type: text/htmlnAllow: POSTnn" .
"
You got big problem. Try again.
n";exit 0;
}
binmode $xfile;
use File::Copy;
copy($xfile,$writed.$strNetFname);
}
sub g_head{
print '
文件上传结果(Upload Result) | ||
SourceFile: | ';DestFile: | ';Upload | ';
'.$xfile .' | ';'.$writed.$strNetFname.' | ';OK! | ';
}
----------------------------------------------------------------------
如有好的建议请 Email: gearsoft@netease.com

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PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

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PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

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PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.


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