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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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466 |
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467 | /** |
468 | * Filter whether the current image is displayable in the browser. |
469 | * |
470 | * @since 2.5.0 |
471 | * |
472 | * @param bool $result Whether the image can be displayed. Default true. |
473 | * @param string $path Path to the image. |
474 | */ |
475 | return apply_filters( 'file_is_displayable_image', $result, $path ); |
476 | } |
477 |
|
478 | /** |
479 | * Load an image resource for editing. |
480 | * |
481 | * @since 2.9.0 |
482 | * |
483 | * @param string $attachment_id Attachment ID. |
484 | * @param string $mime_type Image mime type. |