Can we use php code in javascript

how to use php in javascript? – Example | php code in javascript

Today, We want to share with you how to use php in javascript.In this post we will show you pass php variable to jQuery function, hear for How To Use PHP code, JQuery source code, as well as HTML Together we will give you demo and example for implement.In this post, we will learn about How to use php function inside javascript file? with an example.

how to use php in javascript | call javascript function from php

There are the Following The simple About how to execute php code within JQuery? Full Information With Example and source code.

As I will cover this Post with live Working example to develop how to store jQuery value in php variable, so the some major files and Directory structures for this example is following below.

Example : how to use php code in javascript

corephp code in javascript

$num = $_POST["num"]; echo $num * 2;

Javascript(jQuery) (on another page):

//how to use php in javas cript $.post('index.php', < num: 5 >, function(result) < alert(result); >);

//how to use jQuery in php alert("");

Example With Demo: jQuery Access PHP Variables In JQuery – how to use php in javascript

how to use php variable in javascript

PHP code into Java-script

In Javas-cript just added code:

call javascript function from html

How to run Java Script from PHP?

Pure Java Script is the main type of the client based scripting language as well as PHP is the main used for the server based scripting language. Java Script is used as client based to check as well as check confirm the client infromation as well as PHP is server based used to communicate an interact with MysqL or any other database. In PHP server side, DOM HTML is used as a string in the source code. In order to All the Daata render it to the any type of the browser Like as a chrome, Mozila, we produce Java Script source as a string in the PHP source.

Web Programming Tutorials Example with Demo

Example 1: Write Java Script source code within PHP Script

 prompt("what is a variable in javascript?"); ' ; ?>

HTML DOM Manipulation (in same PHP file)

  //php call a function var x = getData(11, 10); document.getElementById("php_code").innerHTML = x; //simple JavaScript Function returns the product of a and b function getData(a, b)

embed PHP code in JavaScript?

How to put php inside jQuery or Java Script?

Read :

Summary

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How to Call a PHP Function From JavaScript

Monty Shokeen Last updated Feb 17, 2021

PHP comes with a lot more built-in functions to work with strings, arrays and other types of data in comparison to JavaScript. Therefore, it is natural for a lot of people to feel the urge to call PHP functions from JavaScript. However, as you might have guessed or found out, this does not work as expected.

There can be a lot of other cases where you might want to run some PHP code inside JavaScript—for example, to save some data on your server. Simply placing the PHP code inside JavaScript will not work in this case either.

The reason you can’t simply call a PHP function from JavaScript has to do with the order in which these languages are run. PHP is a server-side language, and JavaScript is primarily a client-side language.

Whenever you want to visit a page, the browser sends a request to the server, which then processes the request and generates some output by running the PHP code. The output or generated webpage is then sent back to you. The browser usually expects the webpage to consist of HTML, CSS, and JavaScript. Any PHP that you might have placed or echoed inside JavaScript would either have run already or won’t run at all when the webpage loads in the browser.

All hope is not lost, though. In this tutorial, I’ll explain how you can call PHP functions from JavaScript and JavaScript functions from PHP.

Call a PHP Function From JavaScript

We can use AJAX to call a PHP function on data generated inside a browser. AJAX is used by a lot of websites to update parts of webpages without a full page reload. It can significantly improve the user experience when done properly.

Keep in mind that the PHP code will still run on the server itself. We will just provide it with data from within our script.

Using jQuery AJAX to Run PHP Code

If you are using jQuery on your website, it becomes incredibly easy to call any PHP file with code that you want to run.

You can pass one or two parameters to the ajax() function. When two parameters are passed, the first one will be the URL of the webpage where the browser will send your request. When you pass only one parameter to ajax() , the URL will be specified in the configuration.

The second parameter contains a bunch of different configuration options to specify the data you intend to process and what to do in case of success or failure, etc. The configuration options are passed in JSON format.

You can use the method parameter to specify the HTTP method which should be used for making the request. We will be setting it to POST because we will be sending data to the server as well.

Now, let’s see an example of a basic AJAX request where we will pass data to a PHP file and call the PHP function wordwrap() within that file. Here is our complete webpage:

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Выполнение PHP-кода в файлах JavaScript

В большинстве веб-приложений статические JavaScript-файлы устраивают разработчика на 100%. Однако же иногда бывает лучшим решением подключить PHP и сгенерировать содержимое JS-файла «на лету» (например, получить актуальные цены на продукты из БД и передать их JavaScript-программе для валидации формы заказа). Как же это сделать?

Способ первый: простой

Конечно же, самое простое решение состоит в том, чтобы включить код PHP внутрь секции вашего HTML-шаблона, поскольку есть шансы, что у него будет расширение .php.

Даже если расширение шаблона .htm или .html, то в большинстве случаев веб-сервер настроен так, чтобы понимать включения PHP-кода (если же нет, то в конце заметки есть простой пример как решить и эту проблему). Но что касается красоты, то этот вариант не самый изящный. Хорошо бы держать мух и котлеты раздельно.

Способ второй: красивый

Второй вариант решения — настроить веб-сервер так, чтобы он парсил JavaScript-файлы на предмет выполнения PHP-кода. Достаточно создать в нужной папке файл .htaccess или открыть уже существующий и добавить в него следующие строки:

AddType application/x-httpd-php .js AddHandler x-httpd-php5 .js SetHandler application/x-httpd-php 

Pro et Contra: что нам это дает?

• Вы можете включать PHP-код в файлы с расширением .js и он автоматически выполнится при клиентском обращении к JavaScript-файлу.
• Вы можете держать такие «гибридные» скрипты в отдельной папке — достаточно в эту папку поместить описанный выше файл .htaccess.
• Если вы хотите держать все JavaScript-файлы в одном месте (статические и гибридные), то можете зарегистрировать обработчик файлов с произвольным расширением, например, .js2 — достаточно немного модифицировать текст .htaccess.
• Вы можете разделить статические HTML-страницы, шаблоны и JavaScript-файлы.

• Теоретически это вызовет минимальную дополнительную нагрузку на работу сервера, но, учитывая вариации с отдельными папками или расширениями файлов, польза кажется превосходящей.

Дополнение

Для того, чтобы веб-сервер парсил файлы .htm и .html и выполнял включенный в них PHP-код, нужно добавить в .htaccess следующие строки:

AddType application/x-httpd-php .htm .html AddHandler x-httpd-php5 .htm .html SetHandler application/x-httpd-php 

Замечания, дополнения и обмен опытом приветствуются.

ВЫВОДЫ

Довольно странно, что небольшая заметка, которая фактически предлагает всего-навсего сниппет для быстрой реализации конкретной практической задачи вызвала такое бурное обсуждение, по большей части похожее на попытки блеснуть теорией. Знаменитое хабра-сообщество в данном случае самоотверженно линчевало те идеи, которые в заметке в принципе не затрагивались. Хотя надо отдать должное — несколько здоровых мыслей все таки есть. И кроме того — нет «никакой другой роскоши, кроме роскоши человеческого общения» (если верить Экзюпери)))).

Источник

How to Call a PHP Function From JavaScript

Monty Shokeen Last updated Feb 17, 2021

PHP comes with a lot more built-in functions to work with strings, arrays and other types of data in comparison to JavaScript. Therefore, it is natural for a lot of people to feel the urge to call PHP functions from JavaScript. However, as you might have guessed or found out, this does not work as expected.

There can be a lot of other cases where you might want to run some PHP code inside JavaScript—for example, to save some data on your server. Simply placing the PHP code inside JavaScript will not work in this case either.

The reason you can’t simply call a PHP function from JavaScript has to do with the order in which these languages are run. PHP is a server-side language, and JavaScript is primarily a client-side language.

Whenever you want to visit a page, the browser sends a request to the server, which then processes the request and generates some output by running the PHP code. The output or generated webpage is then sent back to you. The browser usually expects the webpage to consist of HTML, CSS, and JavaScript. Any PHP that you might have placed or echoed inside JavaScript would either have run already or won’t run at all when the webpage loads in the browser.

All hope is not lost, though. In this tutorial, I’ll explain how you can call PHP functions from JavaScript and JavaScript functions from PHP.

Call a PHP Function From JavaScript

We can use AJAX to call a PHP function on data generated inside a browser. AJAX is used by a lot of websites to update parts of webpages without a full page reload. It can significantly improve the user experience when done properly.

Keep in mind that the PHP code will still run on the server itself. We will just provide it with data from within our script.

Using jQuery AJAX to Run PHP Code

If you are using jQuery on your website, it becomes incredibly easy to call any PHP file with code that you want to run.

You can pass one or two parameters to the ajax() function. When two parameters are passed, the first one will be the URL of the webpage where the browser will send your request. When you pass only one parameter to ajax() , the URL will be specified in the configuration.

The second parameter contains a bunch of different configuration options to specify the data you intend to process and what to do in case of success or failure, etc. The configuration options are passed in JSON format.

You can use the method parameter to specify the HTTP method which should be used for making the request. We will be setting it to POST because we will be sending data to the server as well.

Now, let’s see an example of a basic AJAX request where we will pass data to a PHP file and call the PHP function wordwrap() within that file. Here is our complete webpage:

Источник