header('content-type:text/html;charset=utf8');
$arr = array(
array('id'=>1,'psid'=>'P101','fullname'=>'课程计划全称 101','userid'=>4),
array('id'=>1,'psid'=>'P101','fullname'=>'课程计划全称 101','userid'=>3),
array('id'=>1,'psid'=>'P101','fullname'=>'课程计划全称 101','userid'=>3),
array('id'=>1,'psid'=>'P101','fullname'=>'课程计划全称 101','userid'=>2),
array('id'=>2,'psid'=>'P102','fullname'=>'新课程计划','userid'=>4),
array('id'=>2,'psid'=>'P102','fullname'=>'新课程计划','userid'=>3),
array('id'=>2,'psid'=>'P102','fullname'=>'新课程计划','userid'=>3),
array('id'=>2,'psid'=>'P102','fullname'=>'新课程计划','userid'=>2)
);
$arr = er_array_unique($arr);
foreach($arr as $v){
  echo 'id: '.$v['id'].'psid: '.$v['psid'].' fullname: '.$v['fullname'].' userid: '.$v['userid'].'<br/>';
}
//二维数组简单去重
function er_array_unique($arr){
  $newarr = array();
  if(is_array($arr)){
    foreach($arr as $v){
      if(!in_array($v,$newarr,true)){
        $newarr[] = $v;
      }
    }
  }else{
     return false;
  }
  return $newarr;
}

id: 1psid: P101 fullname: 课程计划全称 101 userid: 4
id: 1psid: P101 fullname: 课程计划全称 101 userid: 3
id: 1psid: P101 fullname: 课程计划全称 101 userid: 2
id: 2psid: P102 fullname: 新课程计划 userid: 4
id: 2psid: P102 fullname: 新课程计划 userid: 3
id: 2psid: P102 fullname: 新课程计划 userid: 2