随机问题特定编号

Question

第一件事，我不是专家，但努力学习，仍然很烂，以这种方式询问在此平台上是不正确的，因此，我一定会为您提供帮助。

我有php函数，每次都从数组中随机抽取任何有限的元素。而我当前的插件只是将元素的顺序改组。因此，每当我放置并替换插件中的代码时，它就会中断。所以我不明白如何解决。

这是php函数

$array = [ 0=>'Q1', 1=>'Q2', 2=>'Q3', 3=>'Q4', 4=>'Q5' ];
$limit = 3;

rand_array($array, $limit);
function rand_array($array, $number){
print '<pre>';
shuffle($array);
print_r( array_values( array_intersect_key( $array, array_flip( array_rand( $array, $number ) ) ) ) );
reset($array);
}

这是生成数组元素随机播放的插件

<?php
/**
 * Plugin load class.
 */

// Prevent loading this file directly
defined( 'ABSPATH' ) || exit;

if ( ! class_exists( 'LP_Addon_Random_Quiz' ) ) {
/**
* Class LP_Addon_Random_Quiz
*/
class LP_Addon_Random_Quiz extends LP_Addon {

		
protected function _define_constants() {
define( 'LP_RANDOM_QUIZ_PATH', dirname( LP_ADDON_RANDOM_QUIZ_FILE ) );
}

protected function _init_hooks() {
add_filter( 'learn_press_quiz_general_meta_box', array( $this, 'admin_meta_box' ) );
			
add_filter( 'learn-press/quiz/questions', array( $this, 'random_questions' ), 10, 2 );

add_action( 'learn-press/user/quiz-redone', array( $this, 'update_user_questions' ), 100, 3 );
  }

/**
* Add random quiz option in quiz meta box.
*
* @param $meta_boxes
*
* @return mixed
*/
public function admin_meta_box( $meta_boxes ) {
$random_quiz = array(
array(
		'name' => __( 'Random Questions', 'learnpress-random-quiz' ),
		 'id'   => '_lp_random_mode',
		 'type' => 'yes_no',
			'desc' => __( 'Mix all available questions in this quiz.', 'learnpress-random-quiz' ),
			'std'  => 'no'
			)
			);

		foreach ( $random_quiz as $field ) {
	// add prerequisites option on top of admin settings course
	array_unshift( $meta_boxes['fields'], $field );
		}

		return $meta_boxes;
		}

	 /**
		 * Update user questions.
		 *
		 * @param $quiz_id
		 * @param $course_id
		 * @param $user_id
		 */
	public function update_user_questions( $quiz_id, $course_id, $user_id ) {
		global $wpdb;
		$item = null;

		switch ( current_action() ) {
		case 'learn-press/user/quiz-redone':
		$item = $wpdb->get_row(
			$wpdb->prepare( "
			SELECT * FROM {$wpdb->prefix}learnpress_user_items
			WHERE item_id = %d
			AND user_id = %d
			AND ref_id = %d
			ORDER BY user_item_id DESC
			", $quiz_id, $user_id, $course_id )
			);
			break;
			case 'learn-press/user/quiz-started':
			break;
			}
			if ( ! $item ) {
				return;
			}
			if ( ! $item->status == 'started' ) {
				return;
			}

			$random_quiz = get_user_meta( $user_id, 'random_quiz', true );
			$quiz        = LP_Quiz::get_quiz( $quiz_id );
			if ( $quiz && $questions = $quiz->get_questions() ) {
			$questions = array_keys( $questions );
			shuffle( $questions );
				$question_id = reset( $questions );

			// set user current question
			$user = learn_press_get_current_user();
			$user_course = $user->get_course_data( $course_id );
			$item_quiz = $user_course->get_item($quiz_id);

			$item_quiz->set_meta( '_current_question', $question_id );
			$item_quiz->update_meta();

			learn_press_update_user_item_meta( $item->user_item_id, 'current_question', $question_id );
			if ( empty( $random_quiz ) ) {
			$random_quiz = array( $quiz_id => $questions );
			} else {
			$random_quiz[ $quiz_id ] = $questions;
			}
		  update_user_meta( $user_id, 'random_quiz', $random_quiz );
			}
		}

		/**
		 * Random quiz questions.
		 *
		 * @param $quiz_questions
		 * @param $quiz_id
		 *
		 * @return array
		 */
		public function random_questions( $quiz_questions, $quiz_id ) {

		if ( get_post_meta( $quiz_id, '_lp_random_mode', true ) == 'yes' ) {

		// get user meta random quiz
		$random_quiz = get_user_meta( get_current_user_id(), 'random_quiz', true );
		if ( is_admin() || empty( $random_quiz ) || empty( $random_quiz[ $quiz_id ] ) ) {
		return $quiz_questions;
		}
    
		$questions = array();
		if ( array_key_exists( $quiz_id, $random_quiz ) && sizeof( $random_quiz[ $quiz_id ] ) == sizeof( $quiz_questions ) ) {
    
		foreach ( $random_quiz[ $quiz_id ] as $question_id ) {
		if ( $question_id ) {
			$questions[ $question_id ] = $question_id;
			}
			}
			} else {
			$question_ids = array_keys( $quiz_questions );
			shuffle( $question_ids );
			$random_quiz[ $quiz_id ] = $question_ids;
			$questions               = array();
			foreach ( $question_ids as $id ) {
			$questions[ $id ] = $quiz_questions[ $id ];
			}
				}

		return $questions;
			}

		return $quiz_questions;

		}
	}
}

add_action( 'plugins_loaded', array( 'LP_Addon_Random_Quiz', 'instance' ) );

我知道只需要进行很小的更改，但是由于我缺乏知识，这种情况正在发生