serialize_block_attributes( array $block_attributes )

Given an array of attributes, returns a string in the serialized attributes format prepared for post content.

Description

The serialized result is a JSON-encoded string, with unicode escape sequence substitution for characters which might otherwise interfere with embedding the result in an HTML comment.

Parameters

$block_attributes

(array) (Required) Attributes object.

Return

(string) Serialized attributes.

Source

File: wp-includes/blocks.php 

function serialize_block_attributes( $block_attributes ) {
	$encoded_attributes = json_encode( $block_attributes );
	$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
	$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
	$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
	$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
	// Regex: /\\"/
	$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );

	return $encoded_attributes;
}

Changelog

Version Description
5.3.1 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/serialize_block_attributes