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Posted by Big Moxy on 12/23/07 23:23
On Dec 23, 2:59 pm, Big Moxy <bigm...@gmail.com> wrote:
> On Dec 23, 2:18 pm, My Pet Programmer <anth...@mypetprogrammer.com>
> wrote:
>
>
>
>
>
> > Big Moxy said:
>
> > > On Dec 23, 1:09 pm, My Pet Programmer <anth...@mypetprogrammer.com>
> > > wrote:
> > >> Big Moxy said:
>
> > >>> On Dec 23, 11:17 am, My Pet Programmer <anth...@mypetprogrammer.com>
> > >>> wrote:
> > >>>> Big Moxy said:
> > >>>>> I have a routine to extract the name and mtime files in a directory.
> > >>>>> PHP by default sorts the array key. I looked at other sort functions
> > >>>>> but don't understand how to sort on a different field.
> > >>>>> Can someone please show me how to sort by the filemtime field instead
> > >>>>> of the filename?
> > >>>>> Thank you!
> > >>>>> Tim
> > >>>>> <TABLE ALIGN=CENTER BGCOLOR=#ffffff CELLPADDING=4 CELLSPACING=0
> > >>>>> border=2>
> > >>>>> <tr><TH>File</TH><TH>Date</TH></TR>
> > >>>>> <?php
> > >>>>> $dir="./";
> > >>>>> if (is_dir($dir)) {
> > >>>>> $dh = @opendir($dir);
> > >>>>> if($dh) {
> > >>>>> while (($file = @readdir($dh)) == true) {
> > >>>>> $pos = strpos($file, '.');
> > >>>>> if (!$pos === false) {
> > >>>>> if ($file != "." && $file != "..") {
> > >>>>> $file_array[] = $file;
> > >>>>> }
> > >>>>> }
> > >>>>> }
> > >>>>> }
> > >>>>> sort($file_array);
> > >>>>> reset($file_array);
> > >>>>> for($i=0;$i<count($file_array);$i++) {
> > >>>>> $name=$file_array[$i];
> > >>>>> $date = date("Y-m-d H:i", filemtime($name));
> > >>>>> if (!is_dir($name)) {
> > >>>>> print("<tr><TD>$name</TD><TD>$date</TD></TR>\n");
> > >>>>> }
> > >>>>> }
> > >>>>> }
> > >>>>> ?>
> > >>>>> </TABLE>
> > >>>>http://www.php.net/manual/en/function.asort.php
> > >>>> RTM
> > >>>> ~A!- Hide quoted text -
> > >>>> - Show quoted text -
> > >>> The manual may be easy for you to understand but for me the
> > >>> documentation and subsequent discussion is anything but intuitive. It
> > >>> also doesn't help that all of the code samples are not commented.
> > >>> Is there someone who can respond with the understanding that I may not
> > >>> be an expert PHP programmer?
> > >> My apologies. You are correct in that I assumed you were much more into
> > >> PHP than you are. Comes from spending too much time in the code, I
> > >> think. Ok, so here you go, then:
>
> > >> When you run asort on an array, it sorts the array by value, instead of
> > >> by key. Since you have an array of filenames you want sorted ascending
> > >> (A-Z), you can run this line of code to sort then appropriately:
>
> > >> asort($file_array);
>
> > >> And you don't need to reset the array, your loop looks at them in order,
> > >> so you don't need to worry about the internal array pointer.
>
> > >> Sorry for the mix up.
>
> > >> ~A!- Hide quoted text -
>
> > >> - Show quoted text -
>
> > > Thank you. I have enough general coding experience to understand a lot
> > > of code however I was lost without any comments in the manual
> > > examples. My original code contained sort($file_array) which yielded
> > > ascending results by file name. I want to sort by filemtime (date/time
> > > last modified). It seems to me that I have to create a new array and
> > > load name and filemtime a two-dimensional array. Is that correct?
>
> > > That leads me to a new question. How do I create and load the new
> > > array? I tried this:
>
> > > // do I explicitly define the new $file_results array? if so,
> > > how?
> > > //
> > > for($i=0;$i<count($file_array);$i++) {
> > > $name=$file_array[$i];
> > > $date = date("Y-m-d H:i", filemtime($name));
> > > if (!is_dir($name)) {
> > > $file_results[$i]['date'] = $date;
> > > $file_results[$i]['name'] = $name;
> > > }
> > > }
>
> > > which produces:
>
> > > Date File
> > > Array['date'] Array['name']
> > > Array['date'] Array['name']
> > > Array['date'] Array['name']
> > > Array['date'] Array['name']
> > > Array['date'] Array['name']
>
> > > Thanks,
> > > Tim
>
> > I thought you would be keying on the name and sorting by date, so I was
> > thinking you could:
>
> > for(....) {
> > $file_array[$name] = $date;
>
> > }
>
> > asort($file_array);
>
> > foreach ($file_array as $name=>$date) {
> > print $name." -- ".$date;
>
> > }
>
> > ~A!- Hide quoted text -
>
> > - Show quoted text -
>
> We're almost there!! url -http://projects.missioninternet.com/proweb/clients/dirlist.php
>
> I used arsort and you can see the file dates are sorted in descending
> order. My question is how do I get rid of the other array elements?
>
> for($i=0;$i<count($file_array);$i++) {
> $name=$file_array[$i];
> $date = date("Y-m-d H:i", filemtime($name));
> if (!is_dir($name)) {
> $file_array[$name] = $date;
> }
> }
> arsort($file_array);
> foreach ($file_array as $name=>$date) {
> print("<tr><TD>".$date."</TD><TD>".$name."</TD></TR>\n");
> }- Hide quoted text -
>
> - Show quoted text -
~A!
I added a dirty edit based on my test data:
foreach ($file_array as $name=>$date) {
if ((is_numeric(substr($date,0,4))) && (substr($date,0,4) !=
'1969')) {
print("<tr><TD>".$date."</TD><TD>".$name."</TD></TR>\n");
}
}
If there is a better way please let me know!
Thanks for your help!
Tim
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