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Source View: wp_calculate_image_srcset

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Source View

Line Code
1087       *         @type int    $value      The source width if paired with a 'w' descriptor, or a
1088       *                                  pixel density value if paired with an 'x' descriptor.
1089       *     }
1090       * }
1091       * @param array  $size_array    Array of width and height values in pixels (in that order).
1092       * @param string $image_src     The 'src' of the image.
1093       * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
1094        * @param int    $attachment_id Image attachment ID or 0.
1095       */
1096      $sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id );
1097
1098      // Only return a 'srcset' value if there is more than one source.
1099      if ( count( $sources ) < 2 ) {
1100           return false;
1101      }
1102
1103      $srcset = '';
1104
1105      foreach ( $sources as $source ) {