WordPress 4.7.1-scripts
[autoinstalls/wordpress.git] / wp-admin / includes / image.php
1 <?php
2 /**
3  * File contains all the administration image manipulation functions.
4  *
5  * @package WordPress
6  * @subpackage Administration
7  */
8
9 /**
10  * Crop an Image to a given size.
11  *
12  * @since 2.1.0
13  *
14  * @param string|int $src The source file or Attachment ID.
15  * @param int $src_x The start x position to crop from.
16  * @param int $src_y The start y position to crop from.
17  * @param int $src_w The width to crop.
18  * @param int $src_h The height to crop.
19  * @param int $dst_w The destination width.
20  * @param int $dst_h The destination height.
21  * @param int $src_abs Optional. If the source crop points are absolute.
22  * @param string $dst_file Optional. The destination file to write to.
23  * @return string|WP_Error New filepath on success, WP_Error on failure.
24  */
25 function wp_crop_image( $src, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) {
26         $src_file = $src;
27         if ( is_numeric( $src ) ) { // Handle int as attachment ID
28                 $src_file = get_attached_file( $src );
29
30                 if ( ! file_exists( $src_file ) ) {
31                         // If the file doesn't exist, attempt a URL fopen on the src link.
32                         // This can occur with certain file replication plugins.
33                         $src = _load_image_to_edit_path( $src, 'full' );
34                 } else {
35                         $src = $src_file;
36                 }
37         }
38
39         $editor = wp_get_image_editor( $src );
40         if ( is_wp_error( $editor ) )
41                 return $editor;
42
43         $src = $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs );
44         if ( is_wp_error( $src ) )
45                 return $src;
46
47         if ( ! $dst_file )
48                 $dst_file = str_replace( basename( $src_file ), 'cropped-' . basename( $src_file ), $src_file );
49
50         /*
51          * The directory containing the original file may no longer exist when
52          * using a replication plugin.
53          */
54         wp_mkdir_p( dirname( $dst_file ) );
55
56         $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) );
57
58         $result = $editor->save( $dst_file );
59         if ( is_wp_error( $result ) )
60                 return $result;
61
62         return $dst_file;
63 }
64
65 /**
66  * Generate post thumbnail attachment meta data.
67  *
68  * @since 2.1.0
69  *
70  * @param int $attachment_id Attachment Id to process.
71  * @param string $file Filepath of the Attached image.
72  * @return mixed Metadata for attachment.
73  */
74 function wp_generate_attachment_metadata( $attachment_id, $file ) {
75         $attachment = get_post( $attachment_id );
76
77         $metadata = array();
78         $support = false;
79         $mime_type = get_post_mime_type( $attachment );
80
81         if ( preg_match( '!^image/!', $mime_type ) && file_is_displayable_image( $file ) ) {
82                 $imagesize = getimagesize( $file );
83                 $metadata['width'] = $imagesize[0];
84                 $metadata['height'] = $imagesize[1];
85
86                 // Make the file path relative to the upload dir.
87                 $metadata['file'] = _wp_relative_upload_path($file);
88
89                 // Make thumbnails and other intermediate sizes.
90                 $_wp_additional_image_sizes = wp_get_additional_image_sizes();
91
92                 $sizes = array();
93                 foreach ( get_intermediate_image_sizes() as $s ) {
94                         $sizes[$s] = array( 'width' => '', 'height' => '', 'crop' => false );
95                         if ( isset( $_wp_additional_image_sizes[$s]['width'] ) ) {
96                                 // For theme-added sizes
97                                 $sizes[$s]['width'] = intval( $_wp_additional_image_sizes[$s]['width'] );
98                         } else {
99                                 // For default sizes set in options
100                                 $sizes[$s]['width'] = get_option( "{$s}_size_w" );
101                         }
102
103                         if ( isset( $_wp_additional_image_sizes[$s]['height'] ) ) {
104                                 // For theme-added sizes
105                                 $sizes[$s]['height'] = intval( $_wp_additional_image_sizes[$s]['height'] );
106                         } else {
107                                 // For default sizes set in options
108                                 $sizes[$s]['height'] = get_option( "{$s}_size_h" );
109                         }
110
111                         if ( isset( $_wp_additional_image_sizes[$s]['crop'] ) ) {
112                                 // For theme-added sizes
113                                 $sizes[$s]['crop'] = $_wp_additional_image_sizes[$s]['crop'];
114                         } else {
115                                 // For default sizes set in options
116                                 $sizes[$s]['crop'] = get_option( "{$s}_crop" );
117                         }
118                 }
119
120                 /**
121                  * Filters the image sizes automatically generated when uploading an image.
122                  *
123                  * @since 2.9.0
124                  * @since 4.4.0 Added the `$metadata` argument.
125                  *
126                  * @param array $sizes    An associative array of image sizes.
127                  * @param array $metadata An associative array of image metadata: width, height, file.
128                  */
129                 $sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes, $metadata );
130
131                 if ( $sizes ) {
132                         $editor = wp_get_image_editor( $file );
133
134                         if ( ! is_wp_error( $editor ) )
135                                 $metadata['sizes'] = $editor->multi_resize( $sizes );
136                 } else {
137                         $metadata['sizes'] = array();
138                 }
139
140                 // Fetch additional metadata from EXIF/IPTC.
141                 $image_meta = wp_read_image_metadata( $file );
142                 if ( $image_meta )
143                         $metadata['image_meta'] = $image_meta;
144
145         } elseif ( wp_attachment_is( 'video', $attachment ) ) {
146                 $metadata = wp_read_video_metadata( $file );
147                 $support = current_theme_supports( 'post-thumbnails', 'attachment:video' ) || post_type_supports( 'attachment:video', 'thumbnail' );
148         } elseif ( wp_attachment_is( 'audio', $attachment ) ) {
149                 $metadata = wp_read_audio_metadata( $file );
150                 $support = current_theme_supports( 'post-thumbnails', 'attachment:audio' ) || post_type_supports( 'attachment:audio', 'thumbnail' );
151         }
152
153         if ( $support && ! empty( $metadata['image']['data'] ) ) {
154                 // Check for existing cover.
155                 $hash = md5( $metadata['image']['data'] );
156                 $posts = get_posts( array(
157                         'fields' => 'ids',
158                         'post_type' => 'attachment',
159                         'post_mime_type' => $metadata['image']['mime'],
160                         'post_status' => 'inherit',
161                         'posts_per_page' => 1,
162                         'meta_key' => '_cover_hash',
163                         'meta_value' => $hash
164                 ) );
165                 $exists = reset( $posts );
166
167                 if ( ! empty( $exists ) ) {
168                         update_post_meta( $attachment_id, '_thumbnail_id', $exists );
169                 } else {
170                         $ext = '.jpg';
171                         switch ( $metadata['image']['mime'] ) {
172                         case 'image/gif':
173                                 $ext = '.gif';
174                                 break;
175                         case 'image/png':
176                                 $ext = '.png';
177                                 break;
178                         }
179                         $basename = str_replace( '.', '-', basename( $file ) ) . '-image' . $ext;
180                         $uploaded = wp_upload_bits( $basename, '', $metadata['image']['data'] );
181                         if ( false === $uploaded['error'] ) {
182                                 $image_attachment = array(
183                                         'post_mime_type' => $metadata['image']['mime'],
184                                         'post_type' => 'attachment',
185                                         'post_content' => '',
186                                 );
187                                 /**
188                                  * Filters the parameters for the attachment thumbnail creation.
189                                  *
190                                  * @since 3.9.0
191                                  *
192                                  * @param array $image_attachment An array of parameters to create the thumbnail.
193                                  * @param array $metadata         Current attachment metadata.
194                                  * @param array $uploaded         An array containing the thumbnail path and url.
195                                  */
196                                 $image_attachment = apply_filters( 'attachment_thumbnail_args', $image_attachment, $metadata, $uploaded );
197
198                                 $sub_attachment_id = wp_insert_attachment( $image_attachment, $uploaded['file'] );
199                                 add_post_meta( $sub_attachment_id, '_cover_hash', $hash );
200                                 $attach_data = wp_generate_attachment_metadata( $sub_attachment_id, $uploaded['file'] );
201                                 wp_update_attachment_metadata( $sub_attachment_id, $attach_data );
202                                 update_post_meta( $attachment_id, '_thumbnail_id', $sub_attachment_id );
203                         }
204                 }
205         }
206         // Try to create image thumbnails for PDFs
207         else if ( 'application/pdf' === $mime_type ) {
208                 $fallback_sizes = array(
209                         'thumbnail',
210                         'medium',
211                         'large',
212                 );
213
214                 /**
215                  * Filters the image sizes generated for non-image mime types.
216                  *
217                  * @since 4.7.0
218                  *
219                  * @param array $fallback_sizes An array of image size names.
220                  */
221                 $fallback_sizes = apply_filters( 'fallback_intermediate_image_sizes', $fallback_sizes, $metadata );
222
223                 $sizes = array();
224                 $_wp_additional_image_sizes = wp_get_additional_image_sizes();
225
226                 foreach ( $fallback_sizes as $s ) {
227                         if ( isset( $_wp_additional_image_sizes[ $s ]['width'] ) ) {
228                                 $sizes[ $s ]['width'] = intval( $_wp_additional_image_sizes[ $s ]['width'] );
229                         } else {
230                                 $sizes[ $s ]['width'] = get_option( "{$s}_size_w" );
231                         }
232
233                         if ( isset( $_wp_additional_image_sizes[ $s ]['height'] ) ) {
234                                 $sizes[ $s ]['height'] = intval( $_wp_additional_image_sizes[ $s ]['height'] );
235                         } else {
236                                 $sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
237                         }
238
239                         if ( isset( $_wp_additional_image_sizes[ $s ]['crop'] ) ) {
240                                 $sizes[ $s ]['crop'] = $_wp_additional_image_sizes[ $s ]['crop'];
241                         } else {
242                                 // Force thumbnails to be soft crops.
243                                 if ( ! 'thumbnail' === $s ) {
244                                         $sizes[ $s ]['crop'] = get_option( "{$s}_crop" );
245                                 }
246                         }
247                 }
248
249                 // Only load PDFs in an image editor if we're processing sizes.
250                 if ( ! empty( $sizes ) ) {
251                         $editor = wp_get_image_editor( $file );
252
253                         if ( ! is_wp_error( $editor ) ) { // No support for this type of file
254                                 $uploaded = $editor->save( $file, 'image/jpeg' );
255                                 unset( $editor );
256
257                                 // Resize based on the full size image, rather than the source.
258                                 if ( ! is_wp_error( $uploaded ) ) {
259                                         $editor = wp_get_image_editor( $uploaded['path'] );
260                                         unset( $uploaded['path'] );
261
262                                         if ( ! is_wp_error( $editor ) ) {
263                                                 $metadata['sizes'] = $editor->multi_resize( $sizes );
264                                                 $metadata['sizes']['full'] = $uploaded;
265                                         }
266                                 }
267                         }
268                 }
269         }
270
271         // Remove the blob of binary data from the array.
272         if ( $metadata ) {
273                 unset( $metadata['image']['data'] );
274         }
275
276         /**
277          * Filters the generated attachment meta data.
278          *
279          * @since 2.1.0
280          *
281          * @param array $metadata      An array of attachment meta data.
282          * @param int   $attachment_id Current attachment ID.
283          */
284         return apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id );
285 }
286
287 /**
288  * Convert a fraction string to a decimal.
289  *
290  * @since 2.5.0
291  *
292  * @param string $str
293  * @return int|float
294  */
295 function wp_exif_frac2dec($str) {
296         @list( $n, $d ) = explode( '/', $str );
297         if ( !empty($d) )
298                 return $n / $d;
299         return $str;
300 }
301
302 /**
303  * Convert the exif date format to a unix timestamp.
304  *
305  * @since 2.5.0
306  *
307  * @param string $str
308  * @return int
309  */
310 function wp_exif_date2ts($str) {
311         @list( $date, $time ) = explode( ' ', trim($str) );
312         @list( $y, $m, $d ) = explode( ':', $date );
313
314         return strtotime( "{$y}-{$m}-{$d} {$time}" );
315 }
316
317 /**
318  * Get extended image metadata, exif or iptc as available.
319  *
320  * Retrieves the EXIF metadata aperture, credit, camera, caption, copyright, iso
321  * created_timestamp, focal_length, shutter_speed, and title.
322  *
323  * The IPTC metadata that is retrieved is APP13, credit, byline, created date
324  * and time, caption, copyright, and title. Also includes FNumber, Model,
325  * DateTimeDigitized, FocalLength, ISOSpeedRatings, and ExposureTime.
326  *
327  * @todo Try other exif libraries if available.
328  * @since 2.5.0
329  *
330  * @param string $file
331  * @return bool|array False on failure. Image metadata array on success.
332  */
333 function wp_read_image_metadata( $file ) {
334         if ( ! file_exists( $file ) )
335                 return false;
336
337         list( , , $sourceImageType ) = getimagesize( $file );
338
339         /*
340          * EXIF contains a bunch of data we'll probably never need formatted in ways
341          * that are difficult to use. We'll normalize it and just extract the fields
342          * that are likely to be useful. Fractions and numbers are converted to
343          * floats, dates to unix timestamps, and everything else to strings.
344          */
345         $meta = array(
346                 'aperture' => 0,
347                 'credit' => '',
348                 'camera' => '',
349                 'caption' => '',
350                 'created_timestamp' => 0,
351                 'copyright' => '',
352                 'focal_length' => 0,
353                 'iso' => 0,
354                 'shutter_speed' => 0,
355                 'title' => '',
356                 'orientation' => 0,
357                 'keywords' => array(),
358         );
359
360         $iptc = array();
361         /*
362          * Read IPTC first, since it might contain data not available in exif such
363          * as caption, description etc.
364          */
365         if ( is_callable( 'iptcparse' ) ) {
366                 getimagesize( $file, $info );
367
368                 if ( ! empty( $info['APP13'] ) ) {
369                         $iptc = iptcparse( $info['APP13'] );
370
371                         // Headline, "A brief synopsis of the caption."
372                         if ( ! empty( $iptc['2#105'][0] ) ) {
373                                 $meta['title'] = trim( $iptc['2#105'][0] );
374                         /*
375                          * Title, "Many use the Title field to store the filename of the image,
376                          * though the field may be used in many ways."
377                          */
378                         } elseif ( ! empty( $iptc['2#005'][0] ) ) {
379                                 $meta['title'] = trim( $iptc['2#005'][0] );
380                         }
381
382                         if ( ! empty( $iptc['2#120'][0] ) ) { // description / legacy caption
383                                 $caption = trim( $iptc['2#120'][0] );
384
385                                 mbstring_binary_safe_encoding();
386                                 $caption_length = strlen( $caption );
387                                 reset_mbstring_encoding();
388
389                                 if ( empty( $meta['title'] ) && $caption_length < 80 ) {
390                                         // Assume the title is stored in 2:120 if it's short.
391                                         $meta['title'] = $caption;
392                                 }
393
394                                 $meta['caption'] = $caption;
395                         }
396
397                         if ( ! empty( $iptc['2#110'][0] ) ) // credit
398                                 $meta['credit'] = trim( $iptc['2#110'][0] );
399                         elseif ( ! empty( $iptc['2#080'][0] ) ) // creator / legacy byline
400                                 $meta['credit'] = trim( $iptc['2#080'][0] );
401
402                         if ( ! empty( $iptc['2#055'][0] ) && ! empty( $iptc['2#060'][0] ) ) // created date and time
403                                 $meta['created_timestamp'] = strtotime( $iptc['2#055'][0] . ' ' . $iptc['2#060'][0] );
404
405                         if ( ! empty( $iptc['2#116'][0] ) ) // copyright
406                                 $meta['copyright'] = trim( $iptc['2#116'][0] );
407
408                         if ( ! empty( $iptc['2#025'][0] ) ) { // keywords array
409                                 $meta['keywords'] = array_values( $iptc['2#025'] );
410                         }
411                  }
412         }
413
414         /**
415          * Filters the image types to check for exif data.
416          *
417          * @since 2.5.0
418          *
419          * @param array $image_types Image types to check for exif data.
420          */
421         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 ) ) ) ) {
422                 $exif = @exif_read_data( $file );
423
424                 if ( ! empty( $exif['ImageDescription'] ) ) {
425                         mbstring_binary_safe_encoding();
426                         $description_length = strlen( $exif['ImageDescription'] );
427                         reset_mbstring_encoding();
428
429                         if ( empty( $meta['title'] ) && $description_length < 80 ) {
430                                 // Assume the title is stored in ImageDescription
431                                 $meta['title'] = trim( $exif['ImageDescription'] );
432                         }
433
434                         if ( empty( $meta['caption'] ) && ! empty( $exif['COMPUTED']['UserComment'] ) ) {
435                                 $meta['caption'] = trim( $exif['COMPUTED']['UserComment'] );
436                         }
437
438                         if ( empty( $meta['caption'] ) ) {
439                                 $meta['caption'] = trim( $exif['ImageDescription'] );
440                         }
441                 } elseif ( empty( $meta['caption'] ) && ! empty( $exif['Comments'] ) ) {
442                         $meta['caption'] = trim( $exif['Comments'] );
443                 }
444
445                 if ( empty( $meta['credit'] ) ) {
446                         if ( ! empty( $exif['Artist'] ) ) {
447                                 $meta['credit'] = trim( $exif['Artist'] );
448                         } elseif ( ! empty($exif['Author'] ) ) {
449                                 $meta['credit'] = trim( $exif['Author'] );
450                         }
451                 }
452
453                 if ( empty( $meta['copyright'] ) && ! empty( $exif['Copyright'] ) ) {
454                         $meta['copyright'] = trim( $exif['Copyright'] );
455                 }
456                 if ( ! empty( $exif['FNumber'] ) ) {
457                         $meta['aperture'] = round( wp_exif_frac2dec( $exif['FNumber'] ), 2 );
458                 }
459                 if ( ! empty( $exif['Model'] ) ) {
460                         $meta['camera'] = trim( $exif['Model'] );
461                 }
462                 if ( empty( $meta['created_timestamp'] ) && ! empty( $exif['DateTimeDigitized'] ) ) {
463                         $meta['created_timestamp'] = wp_exif_date2ts( $exif['DateTimeDigitized'] );
464                 }
465                 if ( ! empty( $exif['FocalLength'] ) ) {
466                         $meta['focal_length'] = (string) wp_exif_frac2dec( $exif['FocalLength'] );
467                 }
468                 if ( ! empty( $exif['ISOSpeedRatings'] ) ) {
469                         $meta['iso'] = is_array( $exif['ISOSpeedRatings'] ) ? reset( $exif['ISOSpeedRatings'] ) : $exif['ISOSpeedRatings'];
470                         $meta['iso'] = trim( $meta['iso'] );
471                 }
472                 if ( ! empty( $exif['ExposureTime'] ) ) {
473                         $meta['shutter_speed'] = (string) wp_exif_frac2dec( $exif['ExposureTime'] );
474                 }
475                 if ( ! empty( $exif['Orientation'] ) ) {
476                         $meta['orientation'] = $exif['Orientation'];
477                 }
478         }
479
480         foreach ( array( 'title', 'caption', 'credit', 'copyright', 'camera', 'iso' ) as $key ) {
481                 if ( $meta[ $key ] && ! seems_utf8( $meta[ $key ] ) ) {
482                         $meta[ $key ] = utf8_encode( $meta[ $key ] );
483                 }
484         }
485
486         foreach ( $meta['keywords'] as $key => $keyword ) {
487                 if ( ! seems_utf8( $keyword ) ) {
488                         $meta['keywords'][ $key ] = utf8_encode( $keyword );
489                 }
490         }
491
492         $meta = wp_kses_post_deep( $meta );
493
494         /**
495          * Filters the array of meta data read from an image's exif data.
496          *
497          * @since 2.5.0
498          * @since 4.4.0 The `$iptc` parameter was added.
499          *
500          * @param array  $meta            Image meta data.
501          * @param string $file            Path to image file.
502          * @param int    $sourceImageType Type of image.
503          * @param array  $iptc            IPTC data.
504          */
505         return apply_filters( 'wp_read_image_metadata', $meta, $file, $sourceImageType, $iptc );
506
507 }
508
509 /**
510  * Validate that file is an image.
511  *
512  * @since 2.5.0
513  *
514  * @param string $path File path to test if valid image.
515  * @return bool True if valid image, false if not valid image.
516  */
517 function file_is_valid_image($path) {
518         $size = @getimagesize($path);
519         return !empty($size);
520 }
521
522 /**
523  * Validate that file is suitable for displaying within a web page.
524  *
525  * @since 2.5.0
526  *
527  * @param string $path File path to test.
528  * @return bool True if suitable, false if not suitable.
529  */
530 function file_is_displayable_image($path) {
531         $displayable_image_types = array( IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_BMP );
532
533         $info = @getimagesize( $path );
534         if ( empty( $info ) ) {
535                 $result = false;
536         } elseif ( ! in_array( $info[2], $displayable_image_types ) ) {
537                 $result = false;
538         } else {
539                 $result = true;
540         }
541
542         /**
543          * Filters whether the current image is displayable in the browser.
544          *
545          * @since 2.5.0
546          *
547          * @param bool   $result Whether the image can be displayed. Default true.
548          * @param string $path   Path to the image.
549          */
550         return apply_filters( 'file_is_displayable_image', $result, $path );
551 }
552
553 /**
554  * Load an image resource for editing.
555  *
556  * @since 2.9.0
557  *
558  * @param string $attachment_id Attachment ID.
559  * @param string $mime_type Image mime type.
560  * @param string $size Optional. Image size, defaults to 'full'.
561  * @return resource|false The resulting image resource on success, false on failure.
562  */
563 function load_image_to_edit( $attachment_id, $mime_type, $size = 'full' ) {
564         $filepath = _load_image_to_edit_path( $attachment_id, $size );
565         if ( empty( $filepath ) )
566                 return false;
567
568         switch ( $mime_type ) {
569                 case 'image/jpeg':
570                         $image = imagecreatefromjpeg($filepath);
571                         break;
572                 case 'image/png':
573                         $image = imagecreatefrompng($filepath);
574                         break;
575                 case 'image/gif':
576                         $image = imagecreatefromgif($filepath);
577                         break;
578                 default:
579                         $image = false;
580                         break;
581         }
582         if ( is_resource($image) ) {
583                 /**
584                  * Filters the current image being loaded for editing.
585                  *
586                  * @since 2.9.0
587                  *
588                  * @param resource $image         Current image.
589                  * @param string   $attachment_id Attachment ID.
590                  * @param string   $size          Image size.
591                  */
592                 $image = apply_filters( 'load_image_to_edit', $image, $attachment_id, $size );
593                 if ( function_exists('imagealphablending') && function_exists('imagesavealpha') ) {
594                         imagealphablending($image, false);
595                         imagesavealpha($image, true);
596                 }
597         }
598         return $image;
599 }
600
601 /**
602  * Retrieve the path or url of an attachment's attached file.
603  *
604  * If the attached file is not present on the local filesystem (usually due to replication plugins),
605  * then the url of the file is returned if url fopen is supported.
606  *
607  * @since 3.4.0
608  * @access private
609  *
610  * @param string $attachment_id Attachment ID.
611  * @param string $size Optional. Image size, defaults to 'full'.
612  * @return string|false File path or url on success, false on failure.
613  */
614 function _load_image_to_edit_path( $attachment_id, $size = 'full' ) {
615         $filepath = get_attached_file( $attachment_id );
616
617         if ( $filepath && file_exists( $filepath ) ) {
618                 if ( 'full' != $size && ( $data = image_get_intermediate_size( $attachment_id, $size ) ) ) {
619                         /**
620                          * Filters the path to the current image.
621                          *
622                          * The filter is evaluated for all image sizes except 'full'.
623                          *
624                          * @since 3.1.0
625                          *
626                          * @param string $path          Path to the current image.
627                          * @param string $attachment_id Attachment ID.
628                          * @param string $size          Size of the image.
629                          */
630                         $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size );
631                 }
632         } elseif ( function_exists( 'fopen' ) && true == ini_get( 'allow_url_fopen' ) ) {
633                 /**
634                  * Filters the image URL if not in the local filesystem.
635                  *
636                  * The filter is only evaluated if fopen is enabled on the server.
637                  *
638                  * @since 3.1.0
639                  *
640                  * @param string $image_url     Current image URL.
641                  * @param string $attachment_id Attachment ID.
642                  * @param string $size          Size of the image.
643                  */
644                 $filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size );
645         }
646
647         /**
648          * Filters the returned path or URL of the current image.
649          *
650          * @since 2.9.0
651          *
652          * @param string|bool $filepath      File path or URL to current image, or false.
653          * @param string      $attachment_id Attachment ID.
654          * @param string      $size          Size of the image.
655          */
656         return apply_filters( 'load_image_to_edit_path', $filepath, $attachment_id, $size );
657 }
658
659 /**
660  * Copy an existing image file.
661  *
662  * @since 3.4.0
663  * @access private
664  *
665  * @param string $attachment_id Attachment ID.
666  * @return string|false New file path on success, false on failure.
667  */
668 function _copy_image_file( $attachment_id ) {
669         $dst_file = $src_file = get_attached_file( $attachment_id );
670         if ( ! file_exists( $src_file ) )
671                 $src_file = _load_image_to_edit_path( $attachment_id );
672
673         if ( $src_file ) {
674                 $dst_file = str_replace( basename( $dst_file ), 'copy-' . basename( $dst_file ), $dst_file );
675                 $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) );
676
677                 /*
678                  * The directory containing the original file may no longer
679                  * exist when using a replication plugin.
680                  */
681                 wp_mkdir_p( dirname( $dst_file ) );
682
683                 if ( ! @copy( $src_file, $dst_file ) )
684                         $dst_file = false;
685         } else {
686                 $dst_file = false;
687         }
688
689         return $dst_file;
690 }