Imsanity custom Util.php for testing image rotation

utils.php

<?php 
/** 
 * ################################################################################
 * UTILITIES - *** CUSTOM VERSION FOR TESTING ROTATION ***
 * ################################################################################
 */

/**
 * Util function returns an array value, if not defined then returns default instead.
 * @param Array $array
 * @param string $key
 * @param variant $default
 */
function imsanity_val($arr,$key,$default='')
{
	return isset($arr[$key]) ? $arr[$key] : $default;
}

/**
 * output a fatal error and optionally die
 * 
 * @param string $message
 * @param string $title
 * @param bool $die
 */
function imsanity_fatal($message, $title = "", $die = false)
{
	echo ("<div style='margin:5px 0px 5px 0px;padding:10px;border: solid 1px red; background-color: #ff6666; color: black;'>"
		. ($title ? "<h4 style='font-weight: bold; margin: 3px 0px 8px 0px;'>" . $title . "</h4>" : "")
		. $message
		. "</div>");
		
	if ($die) die();
}

/**
 * Replacement for deprecated image_resize function
 * @param string $file Image file path.
 * @param int $max_w Maximum width to resize to.
 * @param int $max_h Maximum height to resize to.
 * @param bool $crop Optional. Whether to crop image or resize.
 * @param string $suffix Optional. File suffix.
 * @param string $dest_path Optional. New image file path.
 * @param int $jpeg_quality Optional, default is 90. Image quality percentage.
 * @return mixed WP_Error on failure. String with new destination path.
 */
function imsanity_image_resize( $file, $max_w, $max_h, $crop = false, $suffix = null, $dest_path = null, $jpeg_quality = 90 ) {

	if (function_exists('wp_get_image_editor'))
	{
		// WP 3.5 and up use the image editor
				
		$editor = wp_get_image_editor( $file );
		if ( is_wp_error( $editor ) )
			return $editor;
		$editor->set_quality( $jpeg_quality );
	
		// try to correct for auto-rotation if the info is available
		if (function_exists(exif_read_data)) {
			$exif = exif_read_data($file);
			$orientation = is_array($exif) && array_key_exists('Orientation', $exif) ? $exif['Orientation'] : 0;
			switch($orientation) {
				case 3:
					$editor->rotate(180);
					break;
				case 6:
					$editor->rotate(-90);
					break;
				case 8:
					$editor->rotate(90);
					break;
			}
		}
		
		$resized = $editor->resize( $max_w, $max_h, $crop );
		if ( is_wp_error( $resized ) )
			return $resized;

		$dest_file = $editor->generate_filename( $suffix, $dest_path );
		
		// FIX: make sure that the destination file does not exist.  this fixes
		// an issue during bulk resize where one of the optimized media filenames may get 
		// used as the temporary file, which causes it to be deleted.
		while (file_exists($dest_file)) {
			$dest_file = $editor->generate_filename('TMP', $dest_path );
		}
		
		$saved = $editor->save( $dest_file );
	
		if ( is_wp_error( $saved ) )
			return $saved;
	
		return $dest_file;
	}
	else
	{
		// wordpress prior to 3.5 uses the old image_resize function
		return image_resize( $file, $max_w, $max_h, $crop, $suffix, $dest_path, $jpeg_quality);
	}
}

?>