February 12, 2011 
Definition:
function get_children($args = '', $output = OBJECT) {}
Retrieve all children of the post parent ID.
Normally, without any enhancements, the children would apply to pages. In the context of the inner workings of WordPress, pages, posts, and attachments share the same table, so therefore the functionality could apply to any one of them. It is then noted that while this function does not work on posts, it does not mean that it won’t work on posts. It is recommended that you know what context you wish to retrieve the children of.
Parameters
- mixed $args: Optional. User defined arguments for replacing the defaults.
- string $output: Optional. Constant for return type, either OBJECT (default), ARRAY_A, ARRAY_N.
Return values
returns:False on failure and the type will be determined by $output parameter.
Source code
function get_children($args = '', $output = OBJECT) {
$kids = array();
if ( empty( $args ) ) {
if ( isset( $GLOBALS['post'] ) ) {
$args = array('post_parent' => (int) $GLOBALS['post']->post_parent );
} else {
return $kids;
}
} elseif ( is_object( $args ) ) {
$args = array('post_parent' => (int) $args->post_parent );
} elseif ( is_numeric( $args ) ) {
$args = array('post_parent' => (int) $args);
}
$defaults = array(
'numberposts' => -1, 'post_type' => 'any',
'post_status' => 'any', 'post_parent' => 0,
);
$r = wp_parse_args( $args, $defaults );
$children = get_posts( $r );
if ( !$children )
return $kids;
update_post_cache($children);
foreach ( $children as $key => $child )
$kids[$child->ID] = $children[$key];
if ( $output == OBJECT ) {
return $kids;
} elseif ( $output == ARRAY_A ) {
foreach ( (array) $kids as $kid )
$weeuns[$kid->ID] = get_object_vars($kids[$kid->ID]);
return $weeuns;
} elseif ( $output == ARRAY_N ) {
foreach ( (array) $kids as $kid )
$babes[$kid->ID] = array_values(get_object_vars($kids[$kid->ID]));
return $babes;
} else {
return $kids;
}
}
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