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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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282 | $meta['caption'] = utf8_encode(trim($iptc['2#120'][0])); |
283 | if ( !empty($iptc['2#116'][0]) ) // copyright |
284 | $meta['copyright'] = utf8_encode(trim($iptc['2#116'][0])); |
285 | if ( !empty($iptc['2#005'][0]) ) // title |
286 | $meta['title'] = utf8_encode(trim($iptc['2#005'][0])); |
287 | } |
288 | } |
289 |
|
290 | // fetch additional info from exif if available |
291 | if ( is_callable('exif_read_data') && in_array($sourceImageType, apply_filters('wp_read_image_metadata_types', array(IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM)) ) ) { |
292 | $exif = @exif_read_data( $file ); |
293 | if (!empty($exif['FNumber'])) |
294 | $meta['aperture'] = round( wp_exif_frac2dec( $exif['FNumber'] ), 2 ); |
295 | if (!empty($exif['Model'])) |
296 | $meta['camera'] = trim( $exif['Model'] ); |
297 | if (!empty($exif['DateTimeDigitized'])) |
298 | $meta['created_timestamp'] = wp_exif_date2ts($exif['DateTimeDigitized']); |
299 | if (!empty($exif['FocalLength'])) |
300 | $meta['focal_length'] = wp_exif_frac2dec( $exif['FocalLength'] ); |