No. PHP runs on the server. It receives a http request from the web server, and sends output (typically as html) to the browser.
Any code in an onclick event would be handled by javascript. To send data back to the webserver (and PHP) you can make a synchronous request (AJAX) from an onclick, or any other browser event.
this is not really a question... But I think you are asking why php functions inside a HTML button do not work. Well probably because php is rendered serverside and is passed to a user-browser afterwards.... it is possible to use php inside onclick... but only to display specific content (javascript function for instance)... it is not possible to let a user decide to run a specific php function by clicking a button.
Its done exactly the same as when you put it in an HTML file. There are 2 ways you can do it: <html> <?php // php stuff ?> </html> Or you can do it like this: <?php echo "<html>"; // php stuff echo "</html>"; ?>
You can't use PHP in an HTML document, but you can use HTML in PHP script.
A simple function call <html> <body> <?php if(isset($_POST['button'])) { setValue(); // Function is called } function setValue() { echo "<br>The button property to call PHP function works"; // Your code here } ?> <input type="submit" name="button" onclick=<?php $_SERVER['PHP_SELF']; ?> /> </body> </head>
change the extention of the .HTML file to .php and then open the file that was previously HTML and put <?php include ("path/to/second/php/file.php"); ?> so for example if i have page1.HTML and page2.php i rename page1.HTML to page1.php and then put <?php include ("page2.php"); ?> where i want page2 to appear. Note: Any HTML file can be renamed to have a .php extention even if it doesnt contain any PHP.
Build your form in HTML and specify your PHP file in the action of the document. HTML does the form stuff, PHP the processing (although you can - of course - use HTML inside PHP via print() or echo(), too)
It is not possible to do it with HTML alone, you have to use Javascript, PHP or another scripting language that has the time as a built in function.
there are in fact two basic methods - one is called minimal PHP, and the second tends to be referred to as the CGI-way. minimal php means that you're making php secions in HTML only where really necessary (using the php section begin (<?php ) and end (?> ) tags.). the CGI-way, or maximum PHP means, that you're in fact embedding HTML into strings in php, and the whole page is echo()ed. the second way tends to be viewed as an abuse of php by some people, as php was meant to be "templating" language, and designed to be used mainly the first way.
In structure <?php ?> <html> </html> in application - one is static and another is dynamic. this much ......
To do programming in PHP, there is often the dilemma of whether or not to place the code within the HTML. Depending on the writer's coding experience it is usually better to place the PHP within the HTML.
PHP support is not up to the clients (browsers). If it runs on the server, then HTML is served to the client. PHP may have generated the HTML, but that does not matter to the client.
PHP files are HTML files with any amount of PHP intermingled into it, so the file can be empty or only contain HTML and be valid, yes.