sanitize_bookmark_field( string $field, mixed $value, int $bookmark_id, string $context ): mixed

399function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) {400	$int_fields = array( 'link_id', 'link_rating' );401	if ( in_array( $field, $int_fields, true ) ) {402		$value = (int) $value;403	}404 405	switch ( $field ) {406		case 'link_category': // array( ints )407			$value = array_map( 'absint', (array) $value );408			/*409			 * We return here so that the categories aren't filtered.410			 * The 'link_category' filter is for the name of a link category, not an array of a link's link categories.411			 */412			return $value;413 414		case 'link_visible': // bool stored as Y|N415			$value = preg_replace( '/[^YNyn]/', '', $value );416			break;417		case 'link_target': // "enum"418			$targets = array( '_top', '_blank' );419			if ( ! in_array( $value, $targets, true ) ) {420				$value = '';421			}422			break;423	}424 425	if ( 'raw' === $context ) {426		return $value;427	}428 429	if ( 'edit' === $context ) {430		/** This filter is documented in wp-includes/post.php */431		$value = apply_filters( "edit_{$field}", $value, $bookmark_id );432 433		if ( 'link_notes' === $field ) {434			$value = esc_html( $value ); // textarea_escaped435		} else {436			$value = esc_attr( $value );437		}438	} elseif ( 'db' === $context ) {439		/** This filter is documented in wp-includes/post.php */440		$value = apply_filters( "pre_{$field}", $value );441	} else {442		/** This filter is documented in wp-includes/post.php */443		$value = apply_filters( "{$field}", $value, $bookmark_id, $context );444 445		if ( 'attribute' === $context ) {446			$value = esc_attr( $value );447		} elseif ( 'js' === $context ) {448			$value = esc_js( $value );449		}450	}451 452	// Restore the type for integer fields after esc_attr().453	if ( in_array( $field, $int_fields, true ) ) {454		$value = (int) $value;455	}456 457	return $value;458}