Get image size in PHP respecting EXIF rotation and handling SVG images.

function.my_getimagesize.php

function my_getimagesize($filename) {
	$size = @getimagesize($filename);
	if (is_array($size)) {
		if (function_exists('exif_read_data')) {
			$exif = @exif_read_data($filename);
			if (is_array($exif) && isset($exif['Orientation']) && ($exif['Orientation'] == 6 || $exif['Orientation'] == 8)) {
				// The image is tilted clockwise or counter-clockwise
				// Flip width and height
				$x = $size[0];
				$size[0] = $size[1];
				$size[1] = $x;
			}
		}
	} else {
		// Probably an SVG
		$fh = @fopen($filename, 'r');
		if ($fh) {
			$x = @fread($fh, 5);
			if ($x === '<?xml') {
				// This seems to be an XML file, dig deeper
				$prev = $x;
				do {
					$x = @fread($fh, 512);
					if ($x) {
						$s = $prev . $x;
						if (strpos($s, '<svg ') !== false || strpos($s, '<svg>') !== false) {
							// This is an SVG
							$size = array(
								2 => 'SVG',
							);
							if (preg_match('/<svg[^>]+viewBox="\s*([0-9.]+)\s+([0-9.]+)\s+([0-9.]+)\s+([0-9.]+)\s*"/', $s, $matches)) {
								$size[0] = $matches[3];
								$size[1] = $matches[4];
							}
						}
						$prev = $x;
					}
				} while (!$size && $x && !feof($fh));
				@fclose($fh);
			}
		}
	}
	return $size;
}