function assoc_title($arr, $key){  $tmp_arr = array();  foreach ($arr as $k => $v) {    if (in_array($v[$key], $tmp_arr)) {      unset($arr[$k]);    } else {      $tmp_arr[] = $v[$key];    }  }  return $arr;}//assoc_title end$key_title = 'stu_name';$quchong = assoc_title($teachers, $key_title);echo "<table border=/"1/" bordercolor=/"#CCCCCC/" cellpadding=/"0/" cellspacing=/"0/" style=/"border-collapse:collapse/" width=/"20%/">";echo "<tr><td>id</td><td>學生名</td><td>電話</td></tr>";$i = 1;foreach ($quchong as $key => $vale) {  if ($vale['stu_name'] == "游開琳" or $vale['stu_name'] == "韓建通") {    continue;  }  echo "<tr><td>{$i}</td><td>{$vale['stu_name']}</td><td>{$vale['tel']}</td></tr>";  $i++;}echo "</table>";