CODEWITHSUNDEEP
php
Troels
Troels

Reputation: 75

Only select images uploaded between 15:00:00 and 15:59:59

I use the following function to get all the images from a dir, but instead of putting all the images in the $files array, I would like to tweak it, so it only takes the images uploaded between 15:00:00 and 15:59:59 - today.

 function get_files($images_dir,$exts = array('jpg')) {
      $files = array();
      if($handle = opendir($images_dir)) { 
        while(false !== ($file = readdir($handle))) {
          $extension = strtolower(get_file_extension($file));
          if($extension && in_array($extension,$exts)) {
            $files[] = $file;
          }
        }
        closedir($handle);
      }
      return $files;
    }

But I can't figure out how to do it, and even less how to do it efficient since the folder has around 9000 images. Anyone can point me in the right direction?

Note: All the images are named like this "Snapshot-20110910-103242.jpg" with date-time.

Upvotes: 0

Views: 100

Answers (5)

DaveRandom
DaveRandom

Reputation: 88697

function get_files ($images_dir, $exts = array('jpg'), $start = '15:00:00', $end = '15:59:59', $usemtime = FALSE) {

    /**
    * str  $images_dir - Path to images directory
    * arr  $exts       - Permitted file extensions
    * str  $start      - Start time (H:i:s)
    * str  $end        - End time (H:i:s)
    * bool $usemtime   - Use file modified time instead of file created time
    */

    // Replace \ with / and strip trailing slashes so we can easily create a valid file path
    $images_dir = rtrim(str_replace('\\','/',$images_dir),'/');

    // Get start/end times
    $starttime = strtotime($start);
    $endtime = strtotime($end);

    // Array to hold the results
    $files = array();

    // Open the directory and loop it
    if ($handle = opendir($images_dir)) { 

        while (($file = readdir($handle)) !== FALSE) {

            // Get this file's extension and created/modified time
            $extension = strtolower(get_file_extension($file));
            $filetime = ($usemtime) ? filemtime("$images_dir/$file") : filectime("$images_dir/$file");

            // Check the file's extension and created or modified time
            // I have removed the first $extension check because it is unnecessary)
            if (in_array($extension,$exts) && $filetime >= $starttime && $filetime <= $endtime) {
                $files[] = $file;
            }

        }

        // Close the directory
        closedir($handle);

    }

    // Return the list
    return $files;

}

Upvotes: 2

Lumbendil
Lumbendil

Reputation: 2916

You could use the glob function to filter alot of the images. So, the glob call you'd use would be the following:

glob( $images_dir . '/Snapshot-20110912-15????.jpg' );

Upvotes: 1

Alvaro Arregui
Alvaro Arregui

Reputation: 599

You could get the file name, in this case Snapshot-20110910-103242.jpg and use substr to get the time on the file name like this:

$var = "Snapshot-20110910-103242.jpg";
$var = substr($var, -10,6);

Now that you have the time (103242), just use a if statement to check it the image was uploaded between 15:00:00 and 15:59:59

Upvotes: 0

Joe
Joe

Reputation: 15802

Use scandir to get a list of all files in the directory, then loop that array doing something like this to get matching filenames

function get_files($images_dir,$exts = array('jpg'))
{
    $wantedFiles = array();
    $scannedFiles = scandir($images_dir);
    $todaysDate = date('Ymd');

    foreach ($scannedFiles AS $file)
    {
        $filenameBits = explode('-', $file);

        // Get the info we want
        $numFilenameBits = count($filenameBits);
        $fileData = explode('.', $filenameBits[$numFilenameBits - 1]);

        if (in_array($fileData[1], $exts) && $filenameBits[$numFilenameBits - 2] == $todaysDate && $fileData[0] > 150000 && $fileData[0] < 155959)
            $wantedFiles[] = $file;
    }

    return $wantedFiles;
}

Upvotes: 0

Marc B
Marc B

Reputation: 360772

This'll get the file's "last modified" timestamp, and figure out if it was last modified during the 3pm hour.

$stat = stat($images_dir . '/' . $file);

$mtime = $stat[9];
if (date('G', $stat[9]) == 15) {
    ... file was last modified sometime during 3-4pm
}

Upvotes: 0

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