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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 | * |
530 | * The filter is evaluated for all image sizes except 'full'. |
531 | * |
532 | * @since 3.1.0 |
533 | * |
534 | * @param string $path Path to the current image. |
535 | * @param string $attachment_id Attachment ID. |
536 | * @param string $size Size of the image. |
537 | */ |
538 | $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size ); |
539 | } |
540 | } elseif ( function_exists( 'fopen' ) && function_exists( 'ini_get' ) && true == ini_get( 'allow_url_fopen' ) ) { |
541 | /** |
542 | * Filter the image URL if not in the local filesystem. |
543 | * |
544 | * The filter is only evaluated if fopen is enabled on the server. |
545 | * |
546 | * @since 3.1.0 |
547 | * |