Posted by My Pet Programmer on 12/23/07 22:18

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!

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