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Monday, 7 October 2013

Create thumbnails for complete directory in php

Create thumbnails for complete directory

If you wish to create thumbnails of large number of images then use the below php code
to create thumbnails .To create thumbnails, just give the path to images directory to
$orig_directory variable and run the script and your work is done ..!!


<?php

    $orig_directory = "img";     //Full path to image folder /* change this path */
    $thumb_directory =  $orig_directory;    //Thumbnail folder
/* Opening the thumbnail directory and looping through all the thumbs: */
    $dir_handle = @opendir($orig_directory); //Open Full image dirrectory
    if ($dir_handle > 1){ //Check to make sure the folder opened
   
    $allowed_types=array('jpg','jpeg','gif','png');
    $file_parts=array();
    $ext='';
    $title='';
    $i=0;


while ($file = @readdir($dir_handle))
{

    /* Skipping the system files: */
    if($file=='.' || $file == '..') continue;

    $file_parts = explode('.',$file);    //This gets the file name of the images
    $ext = strtolower(array_pop($file_parts));

    /* Using the file name (withouth the extension) as a image title: */
    $title = implode('.',$file_parts);
    $title = htmlspecialchars($title);

    /* If the file extension is allowed: */
    if(in_array($ext,$allowed_types))
    {

        /* If you would like to inpute images into a database, do your mysql query here */

        /* The code past here is the code at the start of the tutorial */
        /* Outputting each image: */

        $nw = 150;
        $nh = 100;
        $source = "{$orig_directory}/{$file}";
        $stype = explode(".", $source);
        $stype = $stype[count($stype)-1];
        $dir="{$thumb_directory}/thumbs";
        if (!is_dir($dir)) {
                mkdir($dir);        
        }
        $dest = "{$thumb_directory}/thumbs/{$file}";

        $size = getimagesize($source);
        $w = $size[0];
        $h = $size[1];

        switch($stype) {
            case 'gif':
                $simg = imagecreatefromgif($source);
                break;
            case 'jpg':
                $simg = imagecreatefromjpeg($source);
                break;
            case 'png':
                $simg = imagecreatefrompng($source);
                break;
        }

        $dimg = imagecreatetruecolor($nw, $nh);
        $wm = $w/$nw;
        $hm = $h/$nh;
        $h_height = $nh/2;
        $w_height = $nw/2;

        if($w> $h) {
            $adjusted_width = $w / $hm;
            $half_width = $adjusted_width / 2;
            $int_width = $half_width - $w_height;
            imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);
        } elseif(($w <$h) || ($w == $h)) {
            $adjusted_height = $h / $wm;
            $half_height = $adjusted_height / 2;
            $int_height = $half_height - $h_height;

            imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);
        } else {
            imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w,$h);
        }
            imagejpeg($dimg,$dest,100);
        }
}
 echo "Coversion Successfully completed";
/* Closing the directory */
@closedir($dir_handle);

}
?>