$stu = array(
array('name'=>'张三','score_1'=>66,'score_2'=>66,'score_3'=>66,'score_4'=>66,'score_5'=>66),
array('name'=>'李四','score_1'=>66,'score_2'=>66,'score_3'=>66,'score_4'=>66,'score_5'=>66)
//...更多学生
);
for($stu as &$s){
//计算5科总和
$s['score_sum'] = $s['score_1'] + $s['score_2'] + $s['score_3'] + $s['score_4'] + $s['score_5'];
//计算平均分
$s['score_avg'] = ($s['score_sum'] / 5);
}
//输出数组数据
var_dump($stu);
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