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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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903 |
|
904 | /** |
905 | * Filters whether the current image is displayable in the browser. |
906 | * |
907 | * @since 2.5.0 |
908 | * |
909 | * @param bool $result Whether the image can be displayed. Default true. |
910 | * @param string $path Path to the image. |
911 | */ |
912 | return apply_filters( 'file_is_displayable_image', $result, $path ); |
913 | } |
914 |
|
915 | /** |
916 | * Load an image resource for editing. |
917 | * |
918 | * @since 2.9.0 |
919 | * |
920 | * @param string $attachment_id Attachment ID. |
921 | * @param string $mime_type Image mime type. |