[PHP] ordering images by date - Tilted Forum Project Discussion Community

arch13 · 03-05-2004, 03:39 PM

I have a basic php thumbnail program that grabs my thumbs out of a ../images/thumb folder inside my image folder. the code uses thumbs named the same as the full scale images in the parent directory.

The php takes care of building a table and arranging the thumbs into the table for which i can define the amount of colums and rows.

Recently I've taken an interest and developed a need to have these thumbs placed in date order instead of alphabetical order as they currently are.
I assume the *nix files system is just sticking them in alpha order as there is no php code currently dictating the order of the thumbs. It justs uses the order in which it reads them from the directory.
Now is there any code or resources that i could use (actual code is prefferable as it would then work on any computer) that would tell the basic thumbnail program to place the images in the user defined table in date order?

MrFlux · 03-05-2004, 07:18 PM

I can't quite work out the logic in my head but im pretty sure you could do it using getlastmod() and sort($array,SORT_NUMERIC)

Personally, I use a database for my photo gallery, with a date column so I can sort by date added...

You could use a multidimensional array, each file has a stored filename and date modified

e.g.

$thumbs[0][0] = 'filename.jpg'
$thumbs[0][1] = '324729874'

then use array_multisort() to sort by [i][1] then just display the images using foreach

second edit:

here's some code posted on PHP.net for sorting multidimensional arrays:

PHP Code:


			
<?php

function matrixSort(&$matrix,$sortKey) {

   foreach ($matrix as $key => $subMatrix)

       $tmpArray[$key] = $subMatrix[$sortKey];

   arsort($tmpArray);

   return array_merge($tmpArray,$matrix);

}

?>

Of course, I could be going about this totally the wrong way...

MrFlux · 03-05-2004, 08:06 PM

Huzzah! Here is how you can sort your array if you have the date/filename in it... much simpler than i thought:

PHP Code:


			
<?php

// Example unsorted array

// I'll leave it up to you to figure out how to build this array

// Unless you can't in which case I'll give you a hand ;P

$thumbs = array(

    array('231','filename.jpg'),

    array('312','filename2.jpg'),

    array('123','filename3.jpg'));

// This will sort $thumbs by the first index of the second dimension...

sort($thumbs);

// Output the example

foreach($thumbs as $key => $value){

    echo 'Name: '.$thumbs[$key][1].'<br>';

    echo 'Num: '.$thumbs[$key][0].'<br><br>';

}

?>

Just give me a yell if you need help building your thumbs array...

Edit: oh, here's the output of that script:

Name: filename3.jpg
Num: 123

Name: filename.jpg
Num: 231

Name: filename2.jpg
Num: 312

To reverse this (i.e. output by LATEST date instead of earliest) just stick in $thumbs = reverse_array($thumbs) before your output code...

DonnChadh · 03-07-2004, 01:52 PM

This snippet sorts an array of file references by the last changed date of the file by retriving an array of dates and then using array_multisort to sort the array of filenames by the array of dates

PHP Code:


			
  if ($galFiles != NULL) {

    sort ($galFiles);

    reset ($galFiles);



    if ($filesort == "chrono") {

      //Sort the images chronologically

      foreach ($galFiles as $file) {

        $fileloc = getcwd() . "/" . $path_to_imgs . $currDir . $file;

        $galfilemod[] = filectime($fileloc);

      }

      reset ($galFiles);

      array_multisort($galfilemod, SORT_DESC, $galFiles) ;

      reset ($galFiles);

    }

  }

ratbastid · 03-11-2004, 04:52 PM

What kind of language doesn't have hashes, for God's sake? *shudder*

(Edit: I'm kidding, PHP zealots! I'm about to join your ranks, ok? Put down the pitchforks!)

03-05-2004, 03:39 PM	#1 (permalink)
arch13 Loves my girl in thongs Location: North of Mexico, South of Canada	[PHP] ordering images by date I have a basic php thumbnail program that grabs my thumbs out of a ../images/thumb folder inside my image folder. the code uses thumbs named the same as the full scale images in the parent directory. The php takes care of building a table and arranging the thumbs into the table for which i can define the amount of colums and rows. Recently I've taken an interest and developed a need to have these thumbs placed in date order instead of alphabetical order as they currently are. I assume the *nix files system is just sticking them in alpha order as there is no php code currently dictating the order of the thumbs. It justs uses the order in which it reads them from the directory. Now is there any code or resources that i could use (actual code is prefferable as it would then work on any computer) that would tell the basic thumbnail program to place the images in the user defined table in date order? __________________ Seen on an employer evaluation: "The wheel is turning but the hamsters dead" ____________________________ Is arch13 really a porn diety ? find out after the film at 11. -Nanofever

03-05-2004, 07:18 PM	#2 (permalink)
MrFlux Fluxing wildly... Location: Auckland, New Zealand	I can't quite work out the logic in my head but im pretty sure you could do it using getlastmod() and sort($array,SORT_NUMERIC) Personally, I use a database for my photo gallery, with a date column so I can sort by date added... You could use a multidimensional array, each file has a stored filename and date modified e.g. $thumbs[0][0] = 'filename.jpg' $thumbs[0][1] = '324729874' then use array_multisort() to sort by [i][1] then just display the images using foreach second edit: here's some code posted on PHP.net for sorting multidimensional arrays: PHP Code: `<?php function matrixSort(&$matrix,$sortKey) { foreach ($matrix as $key => $subMatrix) $tmpArray[$key] = $subMatrix[$sortKey]; arsort($tmpArray); return array_merge($tmpArray,$matrix); } ?>` Of course, I could be going about this totally the wrong way... __________________ flux (n.) Medicine. The discharge of large quantities of fluid material from the body, especially the discharge of watery feces from the intestines. Last edited by MrFlux; 03-05-2004 at 07:25 PM..

03-05-2004, 08:06 PM	#3 (permalink)
MrFlux Fluxing wildly... Location: Auckland, New Zealand	Huzzah! Here is how you can sort your array if you have the date/filename in it... much simpler than i thought: PHP Code: <?php // Example unsorted array // I'll leave it up to you to figure out how to build this array // Unless you can't in which case I'll give you a hand ;P $thumbs = array( array('231','filename.jpg'), array('312','filename2.jpg'), array('123','filename3.jpg')); // This will sort $thumbs by the first index of the second dimension... sort($thumbs); // Output the example foreach($thumbs as $key => $value){ echo 'Name: '.$thumbs[$key][1].'<br>'; echo 'Num: '.$thumbs[$key][0].'<br><br>'; } ?> Just give me a yell if you need help building your thumbs array... Edit: oh, here's the output of that script: Name: filename3.jpg Num: 123 Name: filename.jpg Num: 231 Name: filename2.jpg Num: 312 To reverse this (i.e. output by LATEST date instead of earliest) just stick in $thumbs = reverse_array($thumbs) before your output code... __________________ flux (n.) Medicine. The discharge of large quantities of fluid material from the body, especially the discharge of watery feces from the intestines. Last edited by MrFlux; 03-05-2004 at 08:11 PM..

03-07-2004, 01:52 PM	#4 (permalink)
DonnChadh Tilted Location: Tha Boro	This snippet sorts an array of file references by the last changed date of the file by retriving an array of dates and then using array_multisort to sort the array of filenames by the array of dates PHP Code: if ($galFiles != NULL) { sort ($galFiles); reset ($galFiles); if ($filesort == "chrono") { //Sort the images chronologically foreach ($galFiles as $file) { $fileloc = getcwd() . "/" . $path_to_imgs . $currDir . $file; $galfilemod[] = filectime($fileloc); } reset ($galFiles); array_multisort($galfilemod, SORT_DESC, $galFiles) ; reset ($galFiles); } } __________________ I try to take life one day at a time, but sometimes several days attack me at once.

03-11-2004, 04:52 PM	#5 (permalink)
ratbastid Darth Papa Location: Yonder	What kind of language doesn't have hashes, for God's sake? shudder (Edit: I'm kidding, PHP zealots! I'm about to join your ranks, ok? Put down the pitchforks!)