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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 |
|---|---|
| 789 | $exif = array(); |
| 790 | |
| 791 | /** |
| 792 | * Filters the image types to check for exif data. |
| 793 | * |
| 794 | * @since 2.5.0 |
| 795 | * |
| 796 | * @param array $image_types Image types to check for exif data. |
| 797 | */ |
| 798 | $exif_image_types = apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) ); |
| 799 | |
| 800 | if ( is_callable( 'exif_read_data' ) && in_array( $image_type, $exif_image_types, true ) ) { |
| 801 | // Don't silence errors when in debug mode, unless running unit tests. |
| 802 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG |
| 803 | && ! defined( 'WP_RUN_CORE_TESTS' ) |
| 804 | ) { |
| 805 | $exif = exif_read_data( $file ); |
| 806 | } else { |
| 807 | // phpcs:ignore WordPress.PHP.NoSilencedErrors -- Silencing notice and warning is intentional. See https://core.trac.wordpress.org/ticket/42480 |