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php从数据库查询结果生成树形列表的方法

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Release: 2016-06-06 20:04:55
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这篇文章主要介绍了php从数据库查询结果生成树形列表的方法,涉及php操作html元素生成树形列表的技巧,非常具有实用价值,需要的朋友可以参考下

本文实例讲述了php从数据库查询结果生成树形列表的方法。分享给大家供大家参考。具体分析如下:

本代码可以从数据库读取数据生成一个类似于windows的资源管理器的树形列表

', $name ? " name=\"$name\"" : '', $icon, $width, $height); } function display_directory($parent,$showdepth=0,$ancestors=false){ global $child_nodes, $node_data, $last_child; reset($child_nodes[$parent]); $size = sizeof($child_nodes[$parent]); $lastindex = $size - 1; if (!$ancestors) { $ancestors = array(); } $depth = sizeof($ancestors); printf( '

', $parent, $showdepth > 0 ? 'show' : 'hide'); while (list($index, $node) = each($child_nodes[$parent])) { for ($i = 0; $i ", $node); } icon($conn_icon, "connImg_$node"); if ($expand) { print( ""); } $icon = $node_data[$node][ 'icon']; if (!$icon) { $type = $node_data[$node][ 'type']; $icon = $GLOBALS[ 'dirent_icons'][$type]; } icon($icon, "nodeImg_$node"); $name = $node_data[$node][ 'name']; printf( '?%s
', -1, $name, 10); if ($child_nodes[$node]) { $newdepth = $showdepth; if ($newdepth > 0) { $newdepth--; } $new_ancestors = $ancestors; $new_ancestors[] = $node; display_directory($node, $newdepth, $new_ancestors); } } print( "
\n>"); } function setup_directory($parent, $maxdepth) { global $dirent_icons, $child_nodes, $node_data, $last_child; $dirent_icons = sql_assoc('SELECT id,icon FROM dirent_types'); $query = 'SELECT id,parent,type,icon,name '. 'FROM directory '. 'ORDER BY parent,name'; $child_nodes = array(); $node_data = array(); $res = sql($query); while (list($id,$parent,$type,$icon,$name)=db_fetch_row($res)){ $child_nodes[(int)$parent][] = $id; $node_data[$id] = array( 'id' => $id, 'parent' => $parent, 'type' => $type, 'icon' => $icon, 'name' => $name); $last_child[(int)$parent] = $id; } } ?>

希望本文所述对大家的php程序设计有所帮助。

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