oembed function to use content_width appropriately

gistfile1.aw

<?php

function yoast_oembed_dataparse( $html, $data, $url ) {
    global $content_width;

    preg_match( '/width="(\d+)"/', $html, $matches );
    $width = $matches[1];
    preg_match( '/height="(\d+)"/', $html, $matches );
    $height = $matches[1];
    $aspect_ratio = $width / $height;
		
    $new_height = $content_width / $aspect_ratio;
    $html = str_replace( 'width="'.$width.'"', 'width="'.$content_width.'"', $html );
    $html = str_replace( 'height="'.$height.'"', 'height="'.$new_height.'"', $html );
    return $html;
}
add_filter( 'oembed_dataparse', 'yoast_oembed_dataparse', 10, 3 );