Подсветка синтаксиса на сайте — Highlight.js

HTML

<h1>Hello, World!<h1>
<div class="form_container">
	<div id="message"><div>
	<form id="form">
		<input type="text" name="login">
		<input type="text" name="password">
		<input type="submit" name="send" value="Отправить">
	<form>
<div>

JS

$.post('/index.php', {text: 'Текст'}, function(data){
	alert(data);
});

PHP

<?php

namespace shop\jobs;

abstract class Job implements \yii\queue\Job
{
    public function execute($queue): void
    {
        $listener = $this->resolveHandler();
        $listener($this, $queue);
    }

    private function resolveHandler(): callable
    {
        return [\Yii::createObject(static::class . 'Handler'), 'handle'];
    }
}