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Posted by Big Moxy on 12/23/07 22:59
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");
}
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