_wp_filter_post_meta_footnotes( string $footnotes ): string

This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Strips all HTML from the content of footnotes, and sanitizes the ID.

Description

This function expects slashed data on the footnotes content.

Parameters

$footnotesstringrequired
JSON encoded string of an array containing the content and ID of each footnote.

Return

string Filtered content without any HTML on the footnote content and with the sanitized id.

Source

function _wp_filter_post_meta_footnotes( $footnotes ) {
	$footnotes_decoded   = json_decode( $footnotes, true );
	if ( ! is_array( $footnotes_decoded ) ) {
		return '';
	}
	$footnotes_sanitized = array();
	foreach ( $footnotes_decoded as $footnote ) {
		if ( ! empty( $footnote['content'] ) && ! empty( $footnote['id'] ) ) {
			$footnotes_sanitized[] = array(
				'id'      => sanitize_key( $footnote['id'] ),
				'content' => wp_unslash( wp_filter_post_kses( wp_slash( $footnote['content'] ) ) ),
			);
		}
	}
	return wp_json_encode( $footnotes_sanitized );
}

Changelog

VersionDescription
6.3.2Introduced.

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