: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* Block Serialization Parser
* Class WP_Block_Parser_Frame
* Holds partial blocks in memory while parsing
class WP_Block_Parser_Frame {
* @var WP_Block_Parser_Block
* Byte offset into document for start of parse token
* Byte length of entire parse token string
* Byte offset into document for after parse token ends
* (used during reconstruction of stack into parse production)
* Byte offset into document where leading HTML before token starts
public $leading_html_start;
* Will populate object properties from the provided arguments.
* @param WP_Block_Parser_Block $block Full or partial block.
* @param int $token_start Byte offset into document for start of parse token.
* @param int $token_length Byte length of entire parse token string.
* @param int $prev_offset Byte offset into document for after parse token ends.
* @param int $leading_html_start Byte offset into document where leading HTML before token starts.
public function __construct( $block, $token_start, $token_length, $prev_offset = null, $leading_html_start = null ) {
$this->token_start = $token_start;
$this->token_length = $token_length;
$this->prev_offset = isset( $prev_offset ) ? $prev_offset : $token_start + $token_length;
$this->leading_html_start = $leading_html_start;