ENCTYPE=\"multipart\/form-data\"?METHOD=POST>
NAME=\"MAX_FILE_SIZE\"?VALUE=\"2000000\">
NAME=\"uploadfile\"?SIZE=\"24\"?MAXLENGTH=\"80\">
NAME=\"sendit\">?
NAME=\"cancelit\">
<\/FORM>
delay?while?we?upload?your?file.)<\/FONT><\/I>
<\/BODY>
<\/HTML>
下面是處理上傳的文件：
(?receiver.php3?):
function?do_upload?()?
{
global?$uploadfile,?$uploadfile_size;
global?$local_file,?$error_msg;
if?(?$uploadfile?==?\"none\"?)?
{
$error_msg?=?\"You?did?not?specify?a?file?for?uploading.\";
return;
}
if?(?$uploadfile_size?>?2000000?)?
{
$error_msg?=?\"Sorry,?your?file?is?too?large.\";
return;
}
$the_time?=?time?();
\/\/?你需要對以下目錄有寫權(quán)限
$upload_dir?=?\"\/local\/uploads\";
$local_file?=?\"$upload_dir\/$the_time\";
if?(?file_exists?(?'$local_file'?)?)?
{
$seq?=?1;
while?(?file_exists?(?\"$upload_dir\/$the_time$seq\"?)?)?{?$seq++;?}
$local_file?=?\"$upload_dir\/$the_time$seq\";
};
rename?(?$uploadfile,?$local_file?);
display_page?();
}
function?display_page?()?
{
\/\/?這里是你的頁面內(nèi)容
}
ENCTYPE="multipart/form-data"?METHOD=POST>
NAME="MAX_FILE_SIZE"?VALUE="2000000">
NAME="uploadfile"?SIZE="24"?MAXLENGTH="80">
NAME="sendit">?
NAME="cancelit">
delay?while?we?upload?your?file.)
下面是處理上傳的文件：
(?receiver.php3?):
function?do_upload?()?
{
global?$uploadfile,?$uploadfile_size;
global?$local_file,?$error_msg;
if?(?$uploadfile?==?"none"?)?
{
$error_msg?=?"You?did?not?specify?a?file?for?uploading.";
return;
}
if?(?$uploadfile_size?>?2000000?)?
{
$error_msg?=?"Sorry,?your?file?is?too?large.";
return;
}
$the_time?=?time?();
//?你需要對以下目錄有寫權(quán)限
$upload_dir?=?"/local/uploads";
$local_file?=?"$upload_dir/$the_time";
if?(?file_exists?(?'$local_file'?)?)?
{
$seq?=?1;
while?(?file_exists?(?"$upload_dir/$the_time$seq"?)?)?{?$seq++;?}
$local_file?=?"$upload_dir/$the_time$seq";
};
rename?(?$uploadfile,?$local_file?);
display_page?();
}
function?display_page?()?
{
//?這里是你的頁面內(nèi)容
}
if?(?$error_msg?)?{?echo?"$error_msg
";?
}
if?(?$sendit?)?
{
do_upload?();
}?
elseif?(?$cancelit?)?
{
header?(?"Location:?$some_other_script"?);
exit;
}?
else?
{
some_other_func?();
}
?>
5.5?常用函數(shù)
我們簡單來看看一些常用的函數(shù)。
Array
array - generate array
count - number of array elements
sort - Array sorting, there are several other sorting functions available
list - List array elements
each - Return the next key/value pair
current - Returns the current array element
next,prev - Returns the pointers before and after the current array element
Date and Time
checkdate - Verify date/time format
date - Generate date/time format
time - Current time information
strftime - Format date/time
Directory, file system
chdir - Change directory
dir - Directory category
opendir, readdir, closedir - open, read, close the directory
fopen, fclose - open, close the file
fgets, fgetss - read the content line by line
file - Read the entire file into an array variable
Regular expression
ereg - Match regular expression
eregi - Matches regular expressions in case insensitive
ereg_replace - Matches regular expressions and replaces them
eregi_replace - Matches regular expressions in case insensitive cases and replaces them
split - Split the string according to the rules and store it in array form
String
AddSlashes - Use a string after adding a slash
echo - Output one or more strings
join, implode - Combine array elements into a string
htmlentities, htmlspecialchars - Convert HTML special characters into HTML tag form
split - Split the string according to rules and store it in array form
5.6 Extend our sample homepage
We will use some of the functions and ideas mentioned above to add more dynamic content to our sample homepage. We can add a navigation bar at the top of each page, and at the same time make the current page automatically not displayed by links; we can also add a user verification form to upload music, images and other files and automatically update the page.
Navigation bar
is actually adding a piece of code to the footer.inc file. Assuming that all files with the suffix .php3 in your website will appear in the navigation bar, the following is the code saved as include/navbar.inc:
/* Output the navigation bar and link all .php3 files in the site except the current page */
# Read directory
$d = dir("./");
echo "
| n";
while($entry = $d->read())
{
/ / Ignore no file condition
if ( !is_file($entry) )
continue;
/* Separate the file name from the extension. Since . is a special character in regular expressions, it should be introduced */
list($filenm, $fileext) = split(".",$entry, 2);
// Ignore Non-.php3 files
if( $fileext != "php3" )
continue;
/* Now that we have selected all the .php3 files, let’s search The first line (title) in the file
is similar to $title="something";
and separate the above title content as link text */
$linknm = "";
$fp=fopen($entry,"r");
while($buffer=fgets($fp, 4096))
{
$buffer = trim($buffer);
// We have put the title of each file on the first line of the file for easy search
// But when you Changing variable names may cause trouble
if (ereg("title *= *"", $buffer))
{
/* We have obtained The title content can be removed based on
.
must be processed in PHP code, such as $title = "blah blah" */
. eval($buffer);
// Then display the link text as title text
$linknm = $title;
break;
}
}
fclose($fp);
if ( $entry == basename($PHP_SELF) )
echo "$linknm";
else
echo "$linknm";
echo " | ";
}
$d->close();
echo "
?>
Photo Collection
We will refer to HTTP-based authentication, file system functions and file upload functions to maintain the directory where the image files are placed.
At the same time, we need to create a directory. A page that lists all photos in this directory.
File upload
include("include/common.inc");
// We are here Do another user verification here
if(!isset($PHP_AUTH_USER))
{
Header("WWW-Authenticate: Basic realm="$MySiteName"") ;
Header("HTTP/1.0 401 Unauthorized");
echo "Sorry, you are not authorized to upload filesn";
exit;
}
else
{
if ( !($PHP_AUTH_USER==$MyName && $PHP_AUTH_PW==$MyPassword ) )
{
// If it is a wrong username/password pair, force re-authentication
Header("WWW-Authenticate: Basic realm="My Realm"");
Header( "HTTP/1.0 401 Unauthorized");
echo "ERROR : $PHP_AUTH_USER/$PHP_AUTH_PW is invalid.
";
exit;
}
}
if ( $cancelit )
{
// When the visitor presses the "Cancel" button, it will redirect to the homepage
header ( "Location: front_2.php3" );
exit;
}
function do_upload () {
global $userfile, $userfile_size, $userfile_name, $userfile_type;
global $local_file, $error_msg;
global $HTTP_REFERER;
if ( $userfile == "none" ) {
$error_msg = "You did not specify a file for uploading.";
return;
}
if ( $userfile_size > 2000000 )
{
$error_msg = "Sorry, your file is too large.";
return;
}
// Wherever you have write permission below...
$upload_dir = "photos";
$local_file = "$upload_dir/$userfile_name";
if ( file_exists ( $local_file ) ) {
$error_msg = "Sorry, a file with that name already exists";
return;
};
// You can also use this Check file name/type pairs to determine what kind of file it is: gif, jpg, mp3...
rename($userfile, $local_file);
echo "The file is uploaded
n ";
echo "Go Back
n";
}
$title = "Upload File";
include("include/header.inc");
if (empty($userfile)
$userfile=="none")
{
// Output the following form
?>
(You may notice a slight delay while
we upload your file.)< ;/I>
} else {
if ( $error_msg ) { echo "$error_msg
";
}
if ( $sendit ) {
do_upload ();
}
}
include("include/footer.inc");
?>
Photo Gallery
include("include/common.inc");
$title = "Gallery";
include("include/header. inc");
?>
Here are some of our family photos. This PHP script can really
be made better, by splitting into multiple pages. while($entry = $d->read())
{
if (is_file("photos/$entry"))
echo "n";
}
$d->close();
?>
include("include/footer.inc");
?>
Also, you can upload the file in the file upload form Add an input element to describe the uploaded file. This element will be stored in the file and then read and displayed by the code in the photo gallery above.
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