/**
* 获取大学录取概率
* @param int $pro_code 省份code
* @param int $line_wl 文理
* @param int $score 考分
* @return array
*/
public function getChance($pro_code, $line_wl, $score, $col_id)
{
//获取当前年份的省控线
$year = date('Y');
$sql = 'select line_batch,line_score from line where line_year=? and line_wl=? and pro_code=?';
$line = $this->fetchAll($sql, [$year, $line_wl, $pro_code]);
if (!$line) {
return json_encode(['status' => 404, 'message' => '并无当前省份省控线']);
}
//选择批次
if ($score >= $line[0]['line_score'] + 20) {
$batch = ' p1.col_sco_batch=1';
} elseif ($score < $line[0]['line_score'] + 20 && $score >= $line[0]['line_score'] - 10) {
$batch = ' p1.col_sco_batch<=2 and col_sco_batch>=1';
} elseif ($score < $line[0]['line_score'] - 10 && $score >= $line[1]['line_score'] + 10) {
$batch = ' p1.col_sco_batch=2';
} else {
$batch = ' p1.col_sco_batch>2';
}
//获取大学线差,平均分,难度,最高分,最低分
$year -= 6;
$sql = "select p1.col_sco_batch,p1.col_sco_year,p1.col_sco_diff,p1.col_sco_avg,p1.col_sco_max,p1.col_sco_min,p2.col_degree\r\n from college_score p1\r\n inner join college p2 on p1.col_id=p2.col_id\r\n where p1.col_sco_avg>0 and p1.col_sco_diff>=0 and {$batch} and p1.col_sco_wl=? and p1.pro_code=? and p1.col_id=? and p1.col_sco_year>{$year} order by col_sco_batch asc";
$original = $this->fetchAll($sql, [$line_wl, $pro_code, $col_id]);
if (!$original) {
return json_encode(['status' => 404, 'message' => '无当前学校数据']);
}
//格式化数据,将平均分,最高分,最低分,线差,年份单独组成数组,以批次划分
$info = [];
foreach ($original as $val) {
if ($val['col_sco_batch'] > 2) {
$val['col_sco_batch'] = 2;
}
$info[$val['col_sco_batch']]['avg'][] = $val['col_sco_avg'];
//平均分
$info[$val['col_sco_batch']]['max'][] = $val['col_sco_max'];
//最高分
$info[$val['col_sco_batch']]['min'][] = $val['col_sco_min'];
//最低分
$info[$val['col_sco_batch']]['diff'][] = $val['col_sco_diff'];
//线差
$info[$val['col_sco_batch']]['year'][] = $val['col_sco_year'];
//年份
}
//计算概率
$data = ['score' => $info];
foreach ($info as $key => $val) {
foreach ($line as $v) {
if ($key == $v['line_batch']) {
$diff = \Formula::_singleton()->probability($score, $v['line_score'], $original[0]['col_degree'], $val['diff']);
//差值概率
$avg = \Formula::_singleton()->probability($score, $v['line_score'], $original[0]['col_degree'], $val['avg'], false);
//平均数概率
$probable = number_format(($diff * 0.9 + $avg * 0.1) * 100, 2, '.', '');
//总概率
$data['probable'][] = $probable > 100 ? 100 : $probable;
}
}
}
return json_encode(['status' => 200, 'data' => $data]);
}
public static function _singleton()
{
if (!self::$_singleton instanceof Formula) {
self::$_singleton = new self();
}
return self::$_singleton;
}
