This question already has an answer here:
How do I run a PHP file in my browser? I know what the file is for and I know how it looks because I tested it online. But now I downloaded it locally to my computer and I do not know how to run it on my browser. Is there a way maybe to link it to a HTML like you do with JavaScript or CSS to make it work on a web browser also after it is online how will I manage it to work?
If I can not link then maybe I can use iframe to see it in a HTML iframe. Is that possible? Yet the question is not based about iframe, but I do not exclude the iframe possibility too. That is why I ask of it too.
Or even better, if there is a way to both link and use iframe for the PHP?
The entire PHP file I got is a email function that works and looks a loot like a HTML and JavaScript file, but it is written in PHP. If I simply change the name to the file from PHP to HTML I can open it in the browser and it looks like a HTML file with few defects since it is a PHP file after all.
The file I downloaded was from here: https://www.hscripts.com/scripts/php/registrationMailer.php
And it is this PHP file I am specifically intrested in: https://www.hscripts.com/scripts/php/HMAD/hmailer.php
NOTE: I am not asking of "PHP code is not being executed, instead code shows on the page" as the other page is asking. I am asking of "How do I show / run a PHP file in a browser? As if it was a webpage."
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You need to download a server, and install it. If you want to go to the trouble, you can get XAMPP, and once it's installed, move the PHP file to the root of your installation (usually c:\xampp\htdocs\ on windows) and then use the url localhost/script.php in your browser.
You do not need a web server to execute PHP script unless you need to run it using a browser. Install PHP in your operating system and include PHP path in your environment path or variable (depending on what OS) you are using. If you are just using the script for the mailing stuff from your own computer, you don't need a web server like apache, you just need PHP and its cli program installed and you be run php scripts directly. Google the web how on how run PHP command line. Or visit this official documentation link: http://php.net/manual/en/features.commandline.php