PHP jquery autocomplete实现

<?php header("ContentType:text/plain;charset:gb2312"); define('SCRIPTNAV', 'getindex'); require_once './include/common.inc.php'; $keyWord=iconv('utf-8', 'gb2312', js_unescape($q)); $query = $db->query("SELECT DISTINCT(shopname) FROM {$dbpre}shops WHERE shopname LIKE '%$keyWord%' GROUP BY shopname ORDER BY addtime DESC LIMIT 0,10"); if($query) { while ($result = $db->fetch_array($query)) { echo $result['shopname']."\n"; } } //转换js escape提交过来数据 function js_unescape($str) { $ret = ''; $len = strlen($str); for ($i = 0; $i < $len; $i++) { if ($str[$i] == '%' && $str[$i+1] == 'u') { $val = hexdec(substr($str, $i+2, 4)); if ($val < 0x7f) $ret .= chr($val); else if($val < 0x800) $ret .= chr(0xc0|($val>>6)).chr(0x80|($val&0x3f)); else $ret .= chr(0xe0|($val>>12)).chr(0x80|(($val>>6)&0x3f)).chr(0x80|($val&0x3f)); $i += 5; } else if ($str[$i] == '%') { $ret .= urldecode(substr($str, $i, 3)); $i += 2; } else $ret .= $str[$i]; } return $ret; } ?>