reading a dir with PHP

ok I am not a php coder by any stretch of the imagination - i can muddle my way through someone elses code and have a basic understanding but thats about it.

Anyways on to my question :

What am looking to do is have php read a dir containing pictures and let choose say 16 at random and output them like

Code:

<img src=http://somesite.com/images/random1.jpg> <img src=http://somesite.com/images/random2.jpg> <img src=http://somesite.com/images/random3.jpg> <img src=http://somesite.com/images/random4.jpg> <br /> <img src=http://somesite.com/images/random5.jpg> <img src=http://somesite.com/images/random6.jpg> <img src=http://somesite.com/images/random7.jpg> <img src=http://somesite.com/images/random8jg>

and so on so it builds a 4x4 square using the pictures

anyone wanna knock up something for me?

v_Ln

Hi

Unfortunately, I currently have no time to write the whole code
(with an arbitrary directory somewhere and arbitrary pictures),
but if the directory is fixed and the pictures have names
like random?.jpg, you can use something like

Code:

<?php $filename = "http://somesite.com/images/random".rand(1,64).".jpg"; // assuming 64 pictures echo("<img src=".$filename.">...); ?>

Otherwise, I would
1) fill an array with the file-names array_names,
2) implement a for-loop from 1-4 and another from 1-4
3) in which I choose $randompicture_name=array_names[rand(1,nr_of_pictures)];
4) echo("<img src=...$randompicture_name...>");

If none will convert this into php, I will next week :)

Cheers!

the second one sounds like the idea :)

the image directory will be populated by pictures uploaded by other people so setting a static variable for number of pictures wouldn't work which is a shame - nor will i know the filenames of each picture.

but it def looks like your second suggestion is on the right tracks!

v_Ln

Quote:

the second one sounds like the idea :)

good :)

Well, the enumeration is dynamic, as well as nr_of_pictures is a variable,
hence not a static number. A enumeration of the files is something like

Code:

... $handle=opendir($dirname); while ($file = readdir($handle)) { if($file=='.'||$file=='..') continue; if(!is_dir($dirname.$file)) { $temp = explode(".", $file); if (isset($temp[1])) if ($temp[1]=="jpg") { nr_of_pictures++; // $temp = explode(".", $file);$file=$temp[0]; .... } } else continue; } closedir($handle); ...

Almost there. Sorry, but I just wrote that now in a couple of minutes
(using resources like [1]) so it might have errors etc. but be useful ... :)

It is a shame: it is a sunday and I am working - so, no time to test and
finish this completely.

cheers!

[1] http://php.net/opendir

your the man - lol
thanks alot for all your continuing help with this :)

v_Ln

oh one thing i forgot to add ::

when picking the image to display at random it also needs to check which images have already been picked so the same image doesn;t show up in each 4x4 set more than once

v_Ln

Not sure if I'll help but here is my code to look in a directory. It look throw all level 1 sub directory for a file call setting.php. If the file is found in the directory, it use the setting to output the data. It's not random.

Images.php Code

PHP Code:

<head> <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> <title>Dagang - Photo</title> </head> <?php // in case register global is off foreach($HTTP_GET_VARS as $key => $val) { $$key = $val; global $$key; } global $files, $isDir, $g_twidth, $g_cols, $g_rows, $g_title, $g_desc, $g_dispFn; include "Menu.php"; $path = adjustPath($path); if (file_exists("$path/setting.php")) { include("$path/setting.php"); } if(!$page) $page = 0; if(!$g_cols) $g_cols = 1; if(!$g_rows) $g_rows = 100; if(!$g_twidth) $g_twidth = 200; @readFiles($path); ?> <div align="center"> <table border="0" cellspacing="0" cellpadding="10"> <tr> <td> <div align="center" class="desc"><font face="Arial" size="3"><b><?php echo $g_desc; ?></b></font></div> <p> <div align="center"> <?php @showPageLinks($path, count($files), $page, $img, $g_cols, $g_rows); ?> </div> </td> </tr> <tr> <td> <?php if (!$img) { @showImgTable($path, $files, $isDir, $page, $g_cols, $g_rows); } else { @showBigImg($path, $img); } ?> </td> </tr> <tr> <td> <?php @showPageLinks($path, count($files), $page, $img, $g_cols, $g_rows); ?> </td> </tr> </table> </div> <? include "End.php"; ?>

Setting File

PHP Code:

<?php // description $g_desc='Descp '; // number of columns per page $g_cols='1'; // number of rows per page $g_rows='20'; // display file name? $g_dispFn='check'; // sort by filename $g_sort_by_filename=true; global $g_title, $g_desc, $g_cols, $g_rows, $g_twidth, $g_bgcolor, $g_titlecolor, $g_desccolor, $g_dispFn, $g_sort_by_filename; ?>

I don't have a server to test this on nor the skill to code jack **** so enjoy! Fix it if it's wrong and post it here, I could sure use one of these scripts:

Code:

<?php $line_break = 0; $images_picked = 0; if ($handle = opendir('/path/to/files')) { while (false !== ($file = readdir($handle))) { $pics_in_dir[] = $file; } } while($images_picked != 16) { if($line_break % 3 == 0) { echo("<br>"); } echo(random_pic()); } function random_pic() { $random_number = rand(0,count($pics_in_dir)-1); $random_image = "<img src=\"".$pics_in_dir[$random_number]."\" width=5 height=5>"; if(in_array($random_image, $used_images)) { random_pic(); } else { $used_images[] = $random_image; $images_picked++; $line_break++; return($random_image); } }

Have a glorious day.

Hi Valhallen

I haven't forgotten my promise. Here is the complete code, based on
my initial idea (with the addition of "unique pictures") - tested. Maybe
;TT's script is more elegant, but would need some revision :)

Code:

<?php $dirname="pictures\\"; // relative path of the pictures to the position of this script (or its include) // don't forget the path delimiter "\\" srand ((double)microtime()*1000000); // initialisation of the random generator $nr_of_pictures=0; // create the list of files $handle=opendir($dirname); while ($file = readdir($handle)) { if(!is_dir($dirname.$file)) { $temp = explode(".", $file); $sot=sizeof($temp); if ($sot>1){ // there is at least one extension $ext=$temp[$sot-1]; // the last extension is the relevant one if (($ext=="jpg") || ($ext=="gif")){ // if the file type is jpg or gif $pictures[$nr_of_pictures]=$file; // array with the file names $picture_used[$nr_of_pictures]=0; // array for the uniqueness-check in the second step $nr_of_pictures++; } // if extensions } // if sizeof } // if is_dir } // while closedir($handle); // create the output if ($nr_of_pictures>=16){ // enough pictures available? for ( $row = 1; $row <= 4; $row++) { for ( $column = 1; $column <= 4; $column++) { $r=rand(0,$nr_of_pictures-1); while($picture_used[$r]) $r=rand(0,$nr_of_pictures-1); // makes sure that each picture is unique $picture_used[$r]=1; echo("<img src=\"".$dirname.$pictures[$r]."\" height=\"40\" width=\"40\"></a>"); } //for $column echo("<br>"); } //for $row } // if enough pictures ?>

a tip to optimize bandwidth
This depends on what you intend to do but -

Do not show the picture, but a "thumbnail"-version of it.

You could do this
a) by making "manually" sure that a thumbnail-version exists - and you
use only these for the output
b) you modify the php script such that it generates the thumbnail-version
"on the fly" if the thumbail version does not exist.

Cheers!

P.s. What happened with the flash game you wanted to design using the
parabolic trajectory of some object[1]? :)

[1] http://www.antionline.com/showthread...hreadid=264576

nice one sec works perfectly - had to tweek the dir bit tho the '\\' wasn't working but when i changed it to '/' it worked - dont ask me why dont have alot of php knowledge - as you prolly guessed ;)

will send you a link to finished page using script when its done (gimmie a couple of days)

as for the flash game thats been put off in the meantime until i get this project finished but will keep u updated.

v_Ln