The example of this article describes how the PHP implementation automatically scrolls the display of the picture. Share to everyone for your reference. Specifically as follows:
Specifies a picture directory that automatically scrolls through each picture on the page, using the method:
1. Create an image folder for a slide.
2. Delete the slides in the image folder.
3. After encoding the following code, paste in a text file, named "index.php"
4. Upload files to a directory
5. Replace the 6th and 8 behavior of your corresponding settings.
6. Run (using the URL set in step 4th)
?
/*
PHP Image Slideshow-auto Version-php5
*/
Set the absolute path to the directory containing the images
Define (' Imgdir ', '/home/devel/public_html/domain.com/public/images/slideshow/');
Same but for www
Define (' Webimgdir ', '/images/slideshow/');
Set session name for slideshow "Cookie"
Define (' Ss_sessname ', ' slideshow_sess ');
Global error variable
$err = ';
Start img Session
Session_name (Ss_sessname);
Session_Start ();
Init Slideshow Class
$SS = new Slideshow ($err);
if ($err = $ss->init ())!= ")
{
Header (' http/1.1 Internal Server Error ');
Echo $err;
Exit ();
}
Get image files from directory
$ss->get_images ();
Set variables, done.
List ($curr, $caption, $first, $prev, $next, $last) = $ss->run ();
/*
Slideshow class, can be used stand-alone
*/
Class Slideshow
{
Private $files _arr = NULL;
Private $err = NULL;
Public function __construct (& $err)
{
$this->files_arr = Array ();
$this->err = $err;
}
Public Function init ()
{
Run actions only if IMG array sessions var is empty
Check if image directory exists
if (! $this->dir_exists ())
{
Return ' Error retrieving images, missing directory ';
}
Return ";
}
Public Function Get_images ()
{
Run actions only if IMG array sessions var is empty
if (Isset ($_session[' Imgarr '))
{
$this->files_arr = $_session[' Imgarr '];
}
Else
{
if ($dh = Opendir (Imgdir))
{
while (false!== ($file = Readdir ($DH)))
{
if (Preg_match ('/^.*\. jpg|jpeg|gif|png) $/i ', $file)
{
$this->files_arr[] = $file;
}
}
Closedir ($DH);
}
$_session[' Imgarr ' = $this->files_arr;
}
}
Public Function Run ()
{
$curr = 1;
$last = count ($this->files_arr);
if (Isset ($_get[' img '))
{
if (Preg_match ('/^[0-9]+$/', $_get[' img ')) $curr = (int) $_get[' img '];
if ($curr <= 0 | | $curr > $last) $curr = 1;
}
if ($curr <= 1)
{
$prev = $curr;
$next = $curr + 1;
}
else if ($curr >= $last)
{
$prev = $last-1;
$next = $last;
}
Else
{
$prev = $curr-1;
$next = $curr + 1;
}
Line below sets the caption name ...
$caption = Str_replace ('-', ', $this->files_arr[$curr-1]);
$caption = Str_replace (' _ ', ', ', $caption);
$caption = Preg_replace ('/\. jpe?g|gif|png) $/i ', ', $caption);
$caption = Ucfirst ($caption);
Return Array ($this->files_arr[$curr-1], $caption, 1, $prev, $next, $last);
}
Private Function Dir_exists ()
{
return file_exists (Imgdir);
}
}
?>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title>Slideshow</title>
<style type= "Text/css" >
body{margin:0;padding:0;font:100% Verdana, Arial, Helvetica, sans-serif;font-size:14px;
div#gallery{border:1px #ccc solid;width:600px;margin:40px Auto;text-align:center;}
Div#gallery img{margin:20px;border:2px #004694 Solid;}
Div#gallery p{color: #004694;}
Div#gallery div.pn{padding:10px;margin:0 5px;border-top:1px #ccc Solid;}
A{color: #333;}
A:hover{color: #cc0000;}
a.sp{padding-right:40px;}
</style>
<body>
<div id= "Gallery" >
<?= $curr;? > "alt=" "/>
<p><?= $caption;? ></p>
<div class= "PN" >
<a href= "? img=<?= $first;? > ">First</a> | <a href= "? img=<?= $prev;? > "class=" sp ">previous</a><a href="? img=<?= $next;? > ">Next</a> | <a href= "? img=<?= $last;? > ">Last</a>
</div>
</div>
</body>
I hope this article will help you with your PHP program design.
