Online PHP editor | refs for DmXWd

<?php $a = [ 'title' => '早安系列考试题', 'passing_score' => 60, 'questions' => [ [ 'type' => 'radio', 'id' => 1, 'score' => 10, 'time' => 20, 'title' => '1. 中国的首都是?', 'options' => [ 'A' => '北京', 'B' => '上海', 'C' => '广州', 'D' => '西安', ], 'answer' => 'A', ], [ 'type' => 'checkbox', 'id' => 2, 'score' => 10, 'time' => 20, 'title' => '2. 以下选项中省会城市为?', 'options' => [ 'A' => '苏州', 'B' => '杭州', 'C' => '郑州', 'D' => '西安', 'E' => '青岛', ], 'answer' => [ 'B', 'C', 'D', ], ], [ 'type' => 'text', 'id' => 3, 'score' => 10, 'time' => 20, 'title' => '2. 天是{C},水是{B}?', 'options' => [ 'A' => '黑色', 'B' => '绿色', 'C' => '蓝色', 'D' => '白色', ], ], ], ]; print_r(json_encode($a));