2008.06.07
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create table category (
¡¡¡¡category_id int not null auto_increment,
¡¡¡¡parent_id int,
¡¡¡¡category_name varchar(255),
¡¡¡¡primary key(category_id)
);
¡¡¤³¤Î¥Æ¡¼¥Ö¥ë¤ÎÃæ¤Ë¡¢Àè¤Û¤É¤ÈƱ¤¸¹½Â¤¤Î¥«¥Æ¥´¥ê¡¼¾ðÊó¤òºî¤Ã¤Æ¤ª¤¤Þ¤¹¡£
insert into category ( parent_id, category_name )
¡¡¡¡values ( 0, "¤¹¤Ù¤Æ" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 1, "¥¹¥Ý¡¼¥Ä" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 2, "¥µ¥Ã¥«¡¼" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 2, "¥´¥ë¥Õ" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 1, "¥°¥ë¥á" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 5, "¥ì¥¹¥È¥é¥ó(³°¿©¡Ë" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 5, "¿©ÉÊ(Ãæ¿©¡Ë" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 2, "Ìîµå" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 5, "¥ì¥·¥Ô" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 1, "¥¨¥ó¥¿¡¼¥Æ¥¤¥á¥ó¥È" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 10, "²»³Ú" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 10, "±Ç²è" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 2, "¥¹¥¡¼" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 10, "±é·à" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 10, "Èþ½Ñ" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 8, "¥¸¥ã¥¤¥¢¥ó¥Ä" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 8, "¥¿¥¤¥¬¡¼¥¹" );
insert into category ( parent_id, category_name )
¡¡¡¡values ( 10, "¥Æ¥ì¥Ó¡¦¥é¥¸¥ª" );
¡¡insertʸ¤Çcategory_id¤Î»ØÄê¤ò¤·¤Æ¤¤¤Ê¤¤¤Î¤Ï¡¢¼«Æ°Åª¤Ë¥¤¥ó¥¯¥ê¥á¥ó¥È¤·¤¿ÃͤòÁÞÆþ¤¹¤ë¤è¤¦¤Ë¡¢¥Æ¡¼¥Ö¥ëºîÀ®¤Î»þ¤ËÄêµÁ¤·¤Æ¤¤¤ë¤«¤é¤Ç¤¹¡£¤Þ¤¿¸å¤«¤é¥«¥Æ¥´¥ê¡¼¤¬Äɲ䵤줿¾ì¹ç¤ò¥¤¥á¡¼¥¸¤·¤Æ¡¢¥¤¥ó¥µ¡¼¥È¤Î½ç½ø¤ò¤Ð¤é¤Ð¤é¤Ë¤·¤Æ¤¤¤Þ¤¹¡£
¡¡¤µ¤Æ¤³¤Î¤è¤¦¤Ê¹½Â¤¤Î¥«¥Æ¥´¥ê¡¼¥Æ¡¼¥Ö¥ë¤ÎÃæ¤«¤é¡¢ÆÃÄê¤Î¥«¥Æ¥´¥ê¡¼°Ê²¼¤Î¥µ¥Ö¥»¥Ã¥È¤òÈ´¤½Ð¤¹¤Ë¤Ï¤É¤¦¤¹¤ì¤Ð¤¤¤¤¤Î¤Ç¤·¤ç¤¦¤«¡£»ä¤¬º£Æü¡¢¥¬¥¹¥È¤ÇÃë¿©¤ò¿©¤Ù¤Ê¤¬¤é¹Í¤¨¤¿¤Î¤Ï¼¡¤Î¤è¤¦¤Ê¤â¤Î¤Ç¤¹¡£

¡¡¤½¤ó¤Ê¤ËÆñ¤·¤¤¤â¤Î¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£¤¢¤ë¥«¥Æ¥´¥ê¡¼¤ÎID¤ò»ØÄꤷ¤Æ½èÍý¤ò¸Æ¤Ó½Ð¤¹¤È¡¢¤½¤Î¥µ¥Ö¥«¥Æ¥´¥ê¡¼¤Î¥ê¥¹¥È¤¬¡¢Ä¾´¶Åª¤ËÍý²ò¤Ç¤¤ë½çÈÖ¤Ç$index¤Ë³ÊǼ¤µ¤ì¤Þ¤¹¡£¤ª¤½¤é¤¯Æ±¤¸¥¢¥ë¥´¥ê¥º¥à¤Ï¡¢ÀΤ«¤é¤¢¤ë¤Ï¤º¤Ç¤¹¡£¡Ê»ä¤¬¸«¤Ä¤±¤é¤ì¤Ê¤«¤Ã¤¿¤À¤±¡Ë
¡¡¼ÂºÝ¤Î¥×¥í¥°¥é¥à¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¹¡£ ¡ÊHTML¥¿¥°¤ÎÉôʬ¤ò2¥Ð¥¤¥Èʸ»ú¤ËÃÖ¤´¹¤¨¤Æ¤¢¤ë¤Î¤Ç¡¢¤½¤Î¤Þ¤Þ¥³¥Ô¥Ú¤·¤Æ¤âư¤¤Þ¤»¤ó¡£¤½¤¦¤·¤Ê¤¤¤È¥Ö¥í¥°¤ÎÃæ¤Ç¤¦¤Þ¤¯É½¼¨¤µ¤ì¤Ê¤«¤Ã¤¿¤Î¤Çޥޥޥ¡Ë
¡ã?php
require ( "config.php" );
$index = category_sub_list( $_GET['cat'] );
$value = array();
foreach ( $index as $value ){
¡¡¡¡echo $value['name'] . " : " . $value['level'] . " ¡ãbr¡ä";
}
function category_sub_list( $id ){
¡¡¡¡$ptr_i = 0;
¡¡¡¡$ptr_s = 1;
¡¡¡¡$stack = array();
¡¡¡¡$index = array();
¡¡¡¡$stack[$ptr_s]['id'] = $id;
¡¡¡¡$stack[$ptr_s]['level'] = 0;
¡¡¡¡$stack[$ptr_s]['name'] = '';
¡¡¡¡$db = new mysqli ( DB_HOST, DB_USER, DB_PASSWORD, DB_NAME )
¡¡¡¡¡¡¡¡or exit( "DB Connect Error..." );
¡¡¡¡$stmt = $db->prepare( "select category_id, category_name from category
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡where parent_id = ?
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡order by category_id desc" )
¡¡¡¡¡¡¡¡or exit( "DB Prepare Error..." );
¡¡¡¡while ( $ptr_s > 0 ){
¡¡¡¡¡¡¡¡$index[$ptr_i] = $stack[$ptr_s];
¡¡¡¡¡¡¡¡$ptr_s = $ptr_s - 1;
¡¡¡¡¡¡¡¡$stmt->bind_param( 'i', $index[$ptr_i]['id'] )
¡¡¡¡¡¡¡¡¡¡¡¡or exit( "DB Parameter Bind Error..." );
¡¡¡¡¡¡¡¡$stmt->execute()
¡¡¡¡¡¡¡¡¡¡¡¡or exit( "DB Access Execute Error..." );
¡¡¡¡¡¡¡¡$stmt->bind_result( $r_category_id, $r_category_name );
¡¡¡¡¡¡¡¡while ( $stmt->fetch() ){
¡¡¡¡¡¡¡¡¡¡¡¡$ptr_s = $ptr_s + 1;
¡¡¡¡¡¡¡¡¡¡¡¡$stack[$ptr_s]['id'] = $r_category_id;
¡¡¡¡¡¡¡¡¡¡¡¡$stack[$ptr_s]['name'] = $r_category_name;
¡¡¡¡¡¡¡¡¡¡¡¡$stack[$ptr_s]['level'] = $index[$ptr_i]['level'] + 1;
¡¡¡¡¡¡¡¡}
¡¡¡¡¡¡¡¡$ptr_i = $ptr_i + 1;
¡¡¡¡}
¡¡¡¡$stmt->close();
¡¡¡¡return $index;
}
?¡ä
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