DOM XML (PHP 4) 函数
PHP Manual

DomNode->previous_sibling

(PHP 4 >= 4.1.0)

DomNode->previous_sibling Returns the previous sibling of node

说明

domelement DomNode->previous_sibling ( void )

This function returns the previous sibling of the current node. If there is no previous sibling it returns FALSE (< 4.3) or NULL (>= 4.3). You can use this function to iterate over all children of a node as shown in the example.

See also domnode_next_sibling().


DOM XML (PHP 4) 函数
PHP Manual