Exif Details

外掛說明

取得媒體檔案的詳細 EXIF 資訊。

資料選取

• FILE
• EXIF
• GPS

系列外掛

• 下列外掛可以使用這個外掛產生的標籤。
• Exif Caption

特別感謝測試資料提供者：

• sysbird

使用程式碼片段範例 1 及 3

使用篩選器勾點及動作勾點示範

• 程式碼片段範例 1

/**  ==================================================
 * Sample snippet 1
 *
 * The original filter hook('exif_details_data'),
 * which changes the display when retrieving an Exif and storing it in metadata.
 * The following changes the display of the shooting date and time.
 *
 * @param array $exifdatas  exifdatas.
 * @param int   $id  id.
 */
function exif_details_change( $exifdatas, $id ) {
    if ( array_key_exists( 'DateTimeOriginal', $exifdatas ) ) {
        $shooting_date = str_replace( ':', '-', substr( $exifdatas['DateTimeOriginal'], 0, 10 ) );
        $shooting_time = substr( $exifdatas['DateTimeOriginal'], 10 );
        $exifdatas['DateTimeOriginal'] = $shooting_date . $shooting_time;
    }
    return $exifdatas;
}
add_filter( 'exif_details_data', 'exif_details_change', 10, 2 );

• 程式碼片段範例 2

/**  ==================================================
 * Sample snippet 2
 *
 * Retrieve the post metadata and add the date and time of the shooting to the title of the media page.
 * Execute the original action hook('exif_details_update') in the function.
 *
 * @param array $title  title.
 * @param int   $id  id.
 */
function media_title( $title, $id ) {
    $datetime = null;
    if ( is_attachment() ) {
        do_action( 'exif_details_update', $id );
        $exifdatas = get_post_meta( $id, '_exif_details', true );
        if ( ! empty( $exifdatas ) && array_key_exists( 'DateTimeOriginal', $exifdatas ) ) {
            $datetime = ' Date:' . $exifdatas['DateTimeOriginal'];
        }
    }
    return $title . $datetime;
}
add_filter( 'the_title', 'media_title', 10, 2 );

• 程式碼片段範例 3

/**  ==================================================
 * Sample snippet 3
 *
 * When adding new media, insert the processed data into the caption.
 * Use the original action hook ('exif_details_update') with function.
 *
 * @param array $metadata  metadata.
 * @param int   $id  id.
 */
function media_caption( $metadata, $id ) {
    $mime_type = get_post_mime_type( $id );
    if ( in_array( $mime_type, array( 'image/jpeg', 'image/tiff' ) ) ) {
        do_action( 'exif_details_update', $id );
        $exifdatas = get_post_meta( $id, '_exif_details', true );
        if ( ! empty( $exifdatas ) ) {
            $camera = null;
            $f_number = null;
            $s_speed = null;
            $iso = null;
            $date = null;
            $googlemap = null;
            if ( array_key_exists( 'Model', $exifdatas ) ) {
                $camera = 'Camera:' . $exifdatas['Model'];
            }
            if ( array_key_exists( 'ApertureFNumber', $exifdatas ) ) {
                $f_number = 'F-number:' . $exifdatas['ApertureFNumber'];
            }
            if ( array_key_exists( 'ExposureTime', $exifdatas ) ) {
                $s_speed = 'Shutter speed:' . $exifdatas['ExposureTime'];
            }
            if ( array_key_exists( 'ISOSpeedRatings', $exifdatas ) ) {
                $isodata = json_decode( $exifdatas['ISOSpeedRatings'] );
                if ( is_array( $isodata ) ) {
                    $iso = 'ISO:' . $isodata[0];
                } else {
                    $iso = 'ISO:' . $isodata;
                }
            }
            if ( array_key_exists( 'DateTimeOriginal', $exifdatas ) ) {
                $date = 'Date:' . $exifdatas['DateTimeOriginal'];
            }
            if ( array_key_exists( 'latitude_dd', $exifdatas ) && array_key_exists( 'longtitude_dd', $exifdatas ) ) {
                $googlemap = '<a href="https://www.google.com/maps?q=' . $exifdatas['latitude_dd'] . ',' . $exifdatas['longtitude_dd'] . '">Google Map</a>';
            }
            $caption = sprintf( '%1$s %2$s %3$s %4$s %5$s %6$s', $camera, $f_number, $s_speed, $iso, $date, $googlemap );
            $caption = rtrim( $caption );
            $caption = preg_replace( '/\s(?=\s)/', '', $caption );
            $media_post = array(
                'ID'           => $id,
                'post_excerpt' => $caption,
            );
            wp_update_post( $media_post );
        }
    }
    return $metadata;
}
add_filter( 'wp_generate_attachment_metadata', 'media_caption', 10, 2 );