y_array, 1, 0, $args, $output );
}
}
}
return $output;
}
/**
* Produces a page of nested elements.
*
* Given an array of hierarchical elements, the maximum depth, a specific page number,
* and number of elements per page, this function first determines all top level root elements
* belonging to that page, then lists them and all of their children in hierarchical order.
*
* $max_depth = 0 means display all levels.
* $max_depth > 0 specifies the number of display levels.
*
* @since 2.7.0
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
* to the function signature.
*
* @param array $elements An array of elements.
* @param int $max_depth The maximum hierarchical depth.
* @param int $page_num The specific page number, beginning with 1.
* @param int $per_page Number of elements per page.
* @param mixed ...$args Optional additional arguments.
* @return string XHTML of the specified page of elements.
*/
public function paged_walk( $elements, $max_depth, $page_num, $per_page, ...$args ) {
$output = '';
$max_depth = (int) $max_depth;
if ( empty( $elements ) || $max_depth < -1 ) {
return $output;
}
$parent_field = $this->db_fields['parent'];
$count = -1;
if ( -1 === $max_depth ) {
$total_top = count( $elements );
}
if ( $page_num < 1 || $per_page < 0 ) {
// No paging.
$paging = false;
$start = 0;
if ( -1 === $max_depth ) {
$end = $total_top;
}
$this->max_pages = 1;
} else {
$paging = true;
$start = ( (int) $page_num - 1 ) * (int) $per_page;
$end = $start + $per_page;
if ( -1 === $max_depth ) {
$this->max_pages = (int) ceil( $total_top / $per_page );
}
}
// Flat display.
if ( -1 === $max_depth ) {
if ( ! empty( $args[0]['reverse_top_level'] ) ) {
$elements = array_reverse( $elements );
$oldstart = $start;
$start = $total_top - $end;
$end = $total_top - $oldstart;
}
$empty_array = array();
foreach ( $elements as $e ) {
++$count;
if ( $count < $start ) {
continue;
}
if ( $count >= $end ) {
break;
}
$this->display_element( $e, $empty_array, 1, 0, $args, $output );
}
return $output;
}
/*
* Separate elements into two buckets: top level and children elements.
* Children_elements is two dimensional array, e.g.
* $children_elements[10][] contains all sub-elements whose parent is 10.
*/
$top_level_elements = array();
$children_elements = array();
foreach ( $elements as $e ) {
if ( empty( $e->$parent_field ) ) {
$top_level_elements[] = $e;
} else {
$children_elements[ $e->$parent_field ][] = $e;
}
}
$total_top = count( $top_level_elements );
if ( $paging ) {
$this->max_pages = (int) ceil( $total_top / $per_page );
} else {
$end = $total_top;
}
if ( ! empty( $args[0]['reverse_top_level'] ) ) {
$top_level_elements = array_reverse( $top_level_elements );
$oldstart = $start;
$start = $total_top - $end;
$end = $total_top - $oldstart;
}
if ( ! empty( $args[0]['reverse_children'] ) ) {
foreach ( $children_elements as $parent => $children ) {
$children_elements[ $parent ] = array_reverse( $children );
}
}
foreach ( $top_level_elements as $e ) {
++$count;
// For the last page, need to unset earlier children in order to keep track of orphans.
if ( $end >= $total_top && $count < $start ) {
$this->unset_children( $e, $children_elements );
}
if ( $count < $start ) {
continue;
}
if ( $count >= $end ) {
break;
}
$this->display_element( $e, $children_elements, $max_depth, 0, $args, $output );
}
if ( $end >= $total_top && count( $children_elements ) > 0 ) {
$empty_array = array();
foreach ( $children_elements as $orphans ) {
foreach ( $orphans as $op ) {
$this->display_element( $op, $empty_array, 1, 0, $args, $output );
}
}
}
return $output;
}
/**
* Calculates the total number of root elements.
*
* @since 2.7.0
*
* @param array $elements Elements to list.
* @return int Number of root elements.
*/
public function get_number_of_root_elements( $elements ) {
$num = 0;
$parent_field = $this->db_fields['parent'];
foreach ( $elements as $e ) {
if ( empty( $e->$parent_field ) ) {
++$num;
}
}
return $num;
}
/**
* Unsets all the children for a given top level element.
*
* @since 2.7.0
*
* @param object $element The top level element.
* @param array $children_elements The children elements.
*/
public function unset_children( $element, &$children_elements ) {
if ( ! $element || ! $children_elements ) {
return;
}
$id_field = $this->db_fields['id'];
$id = $element->$id_field;
if ( ! empty( $children_elements[ $id ] ) && is_array( $children_elements[ $id ] ) ) {
foreach ( (array) $children_elements[ $id ] as $child ) {
$this->unset_children( $child, $children_elements );
}
}
unset( $children_elements[ $id ] );
}
}
Fatal error: Uncaught Error: Class 'Walker' not found in /var/www/html/transobelisco.com.br/web/wp-includes/class-walker-page.php:17
Stack trace:
#0 /var/www/html/transobelisco.com.br/web/wp-settings.php(214): require()
#1 /var/www/html/transobelisco.com.br/web/wp-config.php(102): require_once('/var/www/html/t...')
#2 /var/www/html/transobelisco.com.br/web/wp-load.php(50): require_once('/var/www/html/t...')
#3 /var/www/html/transobelisco.com.br/web/wp-blog-header.php(13): require_once('/var/www/html/t...')
#4 /var/www/html/transobelisco.com.br/web/index.php(17): require('/var/www/html/t...')
#5 {main}
thrown in /var/www/html/transobelisco.com.br/web/wp-includes/class-walker-page.php on line 17
Fatal error: Uncaught Error: Call to a member function set() on null in /var/www/html/transobelisco.com.br/web/wp-includes/l10n.php:856
Stack trace:
#0 /var/www/html/transobelisco.com.br/web/wp-includes/l10n.php(959): load_textdomain('default', '/var/www/html/t...', 'pt_BR')
#1 /var/www/html/transobelisco.com.br/web/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
thrown in /var/www/html/transobelisco.com.br/web/wp-includes/l10n.php on line 856