服务不可用。<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/vanthoi/public_html/wp-mail.php:10) in <b>/home/vanthoi/public_html/wp-config.php</b> on line <b>20</b><br />
.
	 */
	public static function build_preinitialized_hooks( $filters ) {
		/** @var WP_Hook[] $normalized */
		$normalized = array();

		foreach ( $filters as $hook_name => $callback_groups ) {
			if ( $callback_groups instanceof WP_Hook ) {
				$normalized[ $hook_name ] = $callback_groups;
				continue;
			}

			$hook = new WP_Hook();

			// Loop through callback groups.
			foreach ( $callback_groups as $priority => $callbacks ) {

				// Loop through callbacks.
				foreach ( $callbacks as $cb ) {
					$hook->add_filter( $hook_name, $cb['function'], $priority, $cb['accepted_args'] );
				}
			}

			$normalized[ $hook_name ] = $hook;
		}

		return $normalized;
	}

	/**
	 * Determines whether an offset value exists.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetexists.php
	 *
	 * @param mixed $offset An offset to check for.
	 * @return bool True if the offset exists, false otherwise.
	 */
	#[ReturnTypeWillChange]
	public function offsetExists( $offset ) {
		return isset( $this->callbacks[ $offset ] );
	}

	/**
	 * Retrieves a value at a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetget.php
	 *
	 * @param mixed $offset The offset to retrieve.
	 * @return mixed If set, the value at the specified offset, null otherwise.
	 */
	#[ReturnTypeWillChange]
	public function offsetGet( $offset ) {
		return isset( $this->callbacks[ $offset ] ) ? $this->callbacks[ $offset ] : null;
	}

	/**
	 * Sets a value at a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetset.php
	 *
	 * @param mixed $offset The offset to assign the value to.
	 * @param mixed $value The value to set.
	 */
	#[ReturnTypeWillChange]
	public function offsetSet( $offset, $value ) {
		if ( is_null( $offset ) ) {
			$this->callbacks[] = $value;
		} else {
			$this->callbacks[ $offset ] = $value;
		}

		$this->priorities = array_keys( $this->callbacks );
	}

	/**
	 * Unsets a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetunset.php
	 *
	 * @param mixed $offset The offset to unset.
	 */
	#[ReturnTypeWillChange]
	public function offsetUnset( $offset ) {
		unset( $this->callbacks[ $offset ] );
		$this->priorities = array_keys( $this->callbacks );
	}

	/**
	 * Returns the current element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.current.php
	 *
	 * @return array Of callbacks at current priority.
	 */
	#[ReturnTypeWillChange]
	public function current() {
		return current( $this->callbacks );
	}

	/**
	 * Moves forward to the next element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.next.php
	 *
	 * @return array Of callbacks at next priority.
	 */
	#[ReturnTypeWillChange]
	public function next() {
		return next( $this->callbacks );
	}

	/**
	 * Returns the key of the current element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.key.php
	 *
	 * @return mixed Returns current priority on success, or NULL on failure
	 */
	#[ReturnTypeWillChange]
	public function key() {
		return key( $this->callbacks );
	}

	/**
	 * Checks if current position is valid.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.valid.php
	 *
	 * @return bool Whether the current position is valid.
	 */
	#[ReturnTypeWillChange]
	public function valid() {
		return key( $this->callbacks ) !== null;
	}

	/**
	 * Rewinds the Iterator to the first element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.rewind.php
	 */
	#[ReturnTypeWillChange]
	public function rewind() {
		reset( $this->callbacks );
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'WP_Hook' not found in /home/vanthoi/public_html/wp-includes/plugin.php:125
Stack trace:
#0 /home/vanthoi/public_html/wp-content/plugins/wp-super-cache/wp-cache-phase1.php(182): add_filter('supercache_file...', 'wp_cache_check_...')
#1 /home/vanthoi/public_html/wp-content/advanced-cache.php(22): include_once('/home/vanthoi/p...')
#2 /home/vanthoi/public_html/wp-settings.php(97): include('/home/vanthoi/p...')
#3 /home/vanthoi/public_html/wp-config.php(97): require_once('/home/vanthoi/p...')
#4 /home/vanthoi/public_html/wp-load.php(50): require_once('/home/vanthoi/p...')
#5 /home/vanthoi/public_html/wp-mail.php(15): require('/home/vanthoi/p...')
#6 {main}
  thrown in <b>/home/vanthoi/public_html/wp-includes/plugin.php</b> on line <b>125</b><br />