Here it is updated with backticks
<?php if( is_home() || is_front_page() ) : ?>
<img src="<?php echo $hdr ?>" width="<?php echo $weaverii_header['width']; ?>" height="<?php echo $weaverii_header['height']; ?>" alt="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" />
<?php elseif is_page( 131 ) : ?>
<img src="" />
<?php endif; ?>