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16 years ago
this is a script which loops trough a directory that is currently set to "files" and resizes all images with respecting the image ratio



<?php

//use this line if you get the error message of using too much memory (strip '//')

//ini_set ( "memory_limit", "48M");



$target_width = 800;

$target_height = 600;



if (ob_get_level() == 0) ob_start();

if ($handle = opendir('files/')) {

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

    if ($file != "." && $file != "..") {

      $destination_path = './files/';

      $target_path = $destination_path . basename($file);



      $extension = pathinfo($target_path);

      $allowed_ext = "jpg, gif, png, bmp, jpeg, JPG";

      $extension = $extension[extension];

      $allowed_paths = explode(", ", $allowed_ext);

      $ok = 0;

      for($i = 0; $i < count($allowed_paths); $i++) {

        if ($allowed_paths[$i] == "$extension") {

          $ok = "1";

        }

      }



      if ($ok == "1") {



        if($extension == "jpg" || $extension == "jpeg" || $extension == "JPG"){

          $tmp_image=imagecreatefromjpeg($target_path);

        }



        if($extension == "png") {

          $tmp_image=imagecreatefrompng($target_path);

        }



        if($extension == "gif") {

          $tmp_image=imagecreatefromgif($target_path);

        }



        $width = imagesx($tmp_image);

        $height = imagesy($tmp_image);



        //calculate the image ratio

        $imgratio = ($width / $height);



        if ($imgratio>1) {

          $new_width = $target_width;

          $new_height = ($target_width / $imgratio);

        } else {

          $new_height = $target_height;

          $new_width = ($target_height * $imgratio);

        }



        $new_image = imagecreatetruecolor($new_width,$new_height);

        ImageCopyResized($new_image, $tmp_image,0,0,0,0, $new_width, $new_height, $width, $height);

        //Grab new image

        imagejpeg($new_image, $target_path);

        $image_buffer = ob_get_contents();

        ImageDestroy($new_image);

        ImageDestroy($tmp_image);

        echo " $file resized to $new_width x $new_height <br> \n";

        echo str_pad('',4096)."\n";  

        ob_flush();

        flush();

      }

    }

  }

  closedir($handle);

  echo "Done.";

  ob_end_flush();

}

?>
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