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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 |
|---|---|
| 529 | * @since 4.4.0 The `$iptc` parameter was added. |
| 530 | * @since 5.0.0 The `$exif` parameter was added. |
| 531 | * |
| 532 | * @param array $meta Image meta data. |
| 533 | * @param string $file Path to image file. |
| 534 | * @param int $image_type Type of image, one of the `IMAGETYPE_XXX` constants. |
| 535 | * @param array $iptc IPTC data. |
| 536 | * @param array $exif EXIF data. |
| 537 | */ |
| 538 | return apply_filters( 'wp_read_image_metadata', $meta, $file, $image_type, $iptc, $exif ); |
| 539 | |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Validate that file is an image. |
| 544 | * |
| 545 | * @since 2.5.0 |
| 546 | * |
| 547 | * @param string $path File path to test if valid image. |