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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 |
|---|---|
| 369 | /** |
| 370 | * Filter the array of meta data read from an image's exif data. |
| 371 | * |
| 372 | * @since 2.5.0 |
| 373 | * |
| 374 | * @param array $meta Image meta data. |
| 375 | * @param string $file Path to image file. |
| 376 | * @param int $sourceImageType Type of image. |
| 377 | */ |
| 378 | return apply_filters( 'wp_read_image_metadata', $meta, $file, $sourceImageType ); |
| 379 | |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Validate that file is an image. |
| 384 | * |
| 385 | * @since 2.5.0 |
| 386 | * |
| 387 | * @param string $path File path to test if valid image. |