wp_get_attachment_metadata

array (size=5)
  'width' => int 4160
  'height' => int 2340
  'file' => string '2017/06/sol.jpg' (length=15)
  'sizes' =>
    array (size=8)
      'thumbnail' =>
        array (size=4)
          'file' => string 'sol-150x150.jpg' (length=15)
          'width' => int 150
          'height' => int 150
          'mime-type' => string 'image/jpeg' (length=10)
      'medium' =>
        array (size=4)
          'file' => string 'sol-300x169.jpg' (length=15)
          'width' => int 300
          'height' => int 169
          'mime-type' => string 'image/jpeg' (length=10)
      'medium_large' =>
        array (size=4)
          'file' => string 'sol-768x432.jpg' (length=15)
          'width' => int 768
          'height' => int 432
          'mime-type' => string 'image/jpeg' (length=10)
      'large' =>
        array (size=4)
          'file' => string 'sol-1024x576.jpg' (length=16)
          'width' => int 1024
          'height' => int 576
          'mime-type' => string 'image/jpeg' (length=10)
      'i600' =>
        array (size=4)
          'file' => string 'sol-600x338.jpg' (length=15)
          'width' => int 600
          'height' => int 338
          'mime-type' => string 'image/jpeg' (length=10)
      'i1000' =>
        array (size=4)
          'file' => string 'sol-1000x563.jpg' (length=16)
          'width' => int 1000
          'height' => int 563
          'mime-type' => string 'image/jpeg' (length=10)
      'i1200' =>
        array (size=4)
          'file' => string 'sol-1200x675.jpg' (length=16)
          'width' => int 1200
          'height' => int 675
          'mime-type' => string 'image/jpeg' (length=10)
      'i1800' =>
        array (size=4)
          'file' => string 'sol-1800x1013.jpg' (length=17)
          'width' => int 1800
          'height' => int 1013
          'mime-type' => string 'image/jpeg' (length=10)
  'image_meta' =>
    array (size=12)
      'aperture' => string '2' (length=1)
      'credit' => string '' (length=0)
      'camera' => string 'Moto G (4)' (length=10)
      'caption' => string '' (length=0)
      'created_timestamp' => string '1487617010' (length=10)
      'copyright' => string '' (length=0)
      'focal_length' => string '3.64' (length=4)
      'iso' => string '50' (length=2)
      'shutter_speed' => string '0.0057471264367816' (length=18)
      'title' => string '' (length=0)
      'orientation' => string '0' (length=1)
      'keywords' =>
        array (size=0)
          empty