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PHP Create Thumbnails [PNG]

/ Published in: PHP
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This code is not made by me : But it was used for one of my projects. This code scans for all png files in a directory and creates a 100x100 thumbnail and moves it into a specified directory.

:.INCLUDES A DATA TEXT CODE WHICH PUTS THE NAMES OF ALL FILES IN THAT DIRECTORY INTO A TEXT FILE, WHICH IS SAVED AS data.txt.:

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  1. <?php
  2. function createThumbs( $pathToImages, $pathToThumbs, $thumbWidth )
  3. {
  4.   // open the directory
  5.  
  6.   $dir = opendir( $pathToImages );
  7.  
  8.   // loop through it, looking for any/all PNG files:
  9.   while (false !== ($fname = readdir( $dir ))) {
  10.     // parse path for the extension
  11.     $info = pathinfo($pathToImages . $fname);
  12.     // continue only if this is a PNG image
  13.     if ( strtolower($info['extension']) == 'png' )
  14.     {
  15.       //echo "Creating thumbnail for {$fname} <br />";
  16.  
  17.       // load image and get image size
  18.       $img = imagecreatefromjpeg( "{$pathToImages}{$fname}" );
  19.       $width = imagesx( $img );
  20.       $height = imagesy( $img );
  21.  
  22.       // calculate thumbnail size
  23.       $new_width = $thumbWidth;
  24. 	 $new_height = floor( $height * ( $thumbWidth / $width ) );
  25.  
  26.       // create a new temporary image
  27.       $tmp_img = imagecreatetruecolor( $new_width, $new_height );
  28.  
  29.       // copy and resize old image into new image
  30.       imagecopyresized( $tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height );
  31.  
  32.       // save thumbnail into a file
  33.       imagepng( $tmp_img, "{$pathToThumbs}{$fname}" );
  34. //Data Text Save [OPTIONAL]
  35.     //$myFile = "data.txt";
  36.     //$fh = fopen($myFile, 'a') or die("can't open file");
  37.     //$stringData = $fname."\n";
  38.     //fwrite($fh, $stringData);
  39.  
  40.     //fclose($fh);
  41.     }
  42.   }
  43.  
  44.   // close the directory
  45.   closedir( $dir );
  46. }
  47. ?>

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