How to use html with php

PHP and HTML

PHP and HTML interact a lot: PHP can generate HTML, and HTML can pass information to PHP. Before reading these faqs, it’s important you learn how to retrieve variables from external sources. The manual page on this topic includes many examples as well.

• HTML interpretation. In order to specify a random string, you must include it in double quotes, and htmlspecialchars() the whole value.
• URL: A URL consists of several parts. If you want your data to be interpreted as one item, you must encode it with urlencode() .

Example #1 A hidden HTML form element

Note: It is wrong to urlencode() $data , because it’s the browsers responsibility to urlencode() the data. All popular browsers do that correctly. Note that this will happen regardless of the method (i.e., GET or POST). You’ll only notice this in case of GET request though, because POST requests are usually hidden.

Example #2 Data to be edited by the user

Note: The data is shown in the browser as intended, because the browser will interpret the HTML escaped symbols. Upon submitting, either via GET or POST, the data will be urlencoded by the browser for transferring, and directly urldecoded by PHP. So in the end, you don’t need to do any urlencoding/urldecoding yourself, everything is handled automagically.

Example #3 In a URL

Note: In fact you are faking a HTML GET request, therefore it’s necessary to manually urlencode() the data.

Note: You need to htmlspecialchars() the whole URL, because the URL occurs as value of an HTML-attribute. In this case, the browser will first un- htmlspecialchars() the value, and then pass the URL on. PHP will understand the URL correctly, because you urlencode() d the data. You’ll notice that the & in the URL is replaced by & . Although most browsers will recover if you forget this, this isn’t always possible. So even if your URL is not dynamic, you need to htmlspecialchars() the URL.

I’m trying to use an tag, but the $foo.x and $foo.y variables aren’t available. $_GET[‘foo.x’] isn’t existing either. Where are they?

When submitting a form, it is possible to use an image instead of the standard submit button with a tag like:

When the user clicks somewhere on the image, the accompanying form will be transmitted to the server with two additional variables: foo.x and foo.y .

Because foo.x and foo.y would make invalid variable names in PHP, they are automagically converted to foo_x and foo_y . That is, the periods are replaced with underscores. So, you’d access these variables like any other described within the section on retrieving variables from external sources. For example, $_GET[‘foo_x’] .

Note:

Spaces in request variable names are converted to underscores.

How do I create arrays in a HTML ?

To get your result sent as an array to your PHP script you name the , or elements like this:

Notice the square brackets after the variable name, that’s what makes it an array. You can group the elements into different arrays by assigning the same name to different elements:

This produces two arrays, MyArray and MyOtherArray, that gets sent to the PHP script. It’s also possible to assign specific keys to your arrays:

Note:

Specifying array keys is optional in HTML. If you do not specify the keys, the array gets filled in the order the elements appear in the form. Our first example will contain keys 0, 1, 2 and 3.

How do I get all the results from a select multiple HTML tag?

The select multiple tag in an HTML construct allows users to select multiple items from a list. These items are then passed to the action handler for the form. The problem is that they are all passed with the same widget name. I.e.

var=option1 var=option2 var=option3

Each option will overwrite the contents of the previous $var variable. The solution is to use PHP’s «array from form element» feature. The following should be used:

This tells PHP to treat $var as an array and each assignment of a value to var[] adds an item to the array. The first item becomes $var[0] , the next $var[1] , etc. The count() function can be used to determine how many options were selected, and the sort() function can be used to sort the option array if necessary.

Note that if you are using JavaScript the [] on the element name might cause you problems when you try to refer to the element by name. Use it’s numerical form element ID instead, or enclose the variable name in single quotes and use that as the index to the elements array, for example:

variable = document.forms[0].elements['var[]'];

How can I pass a variable from Javascript to PHP?

Since Javascript is (usually) a client-side technology, and PHP is (usually) a server-side technology, and since HTTP is a «stateless» protocol, the two languages cannot directly share variables.

It is, however, possible to pass variables between the two. One way of accomplishing this is to generate Javascript code with PHP, and have the browser refresh itself, passing specific variables back to the PHP script. The example below shows precisely how to do this — it allows PHP code to capture screen height and width, something that is normally only possible on the client side.

Example #4 Generating Javascript with PHP

if (isset( $_GET [ ‘width’ ]) AND isset( $_GET [ ‘height’ ])) // output the geometry variables
echo «Screen width is: » . $_GET [ ‘width’ ] . «
\n» ;
echo «Screen height is: » . $_GET [ ‘height’ ] . «
\n» ;
> else // pass the geometry variables
// (preserve the original query string
// — post variables will need to handled differently)

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  PHP in HTML

  PHP is an HTML-embedded server-side scripting language. Much of its syntax is borrowed from C, Java and Perl with a couple of unique PHP-specific features thrown in. The goal of the language is to allow web developers to write dynamically generated pages quickly. NTC Hosting offers its clients high quality PHP and HTML hosting services. Our servers are configured so as to ensure maximum performance for both your HTML and PHP-based applications and the non-interruptible functioning of your websites.

  PHP in HTML

  When building a complex page, at some point you will be faced with the need to combine PHP and HTML to achieve your needed results. At first point, this can seem complicated, since PHP and HTML are two separate languages, but this is not the case. PHP is designed to interact with HTML and PHP scripts can be included in an HTML page without a problem.

  In an HTML page, PHP code is enclosed within special PHP tags. When a visitor opens the page, the server processes the PHP code and then sends the output (not the PHP code itself) to the visitor’s browser. Actually it is quite simple to integrate HTML and PHP. A PHP script can be treated as an HTML page, with bits of PHP inserted here and there. Anything in a PHP script that is not contained within tags is ignored by the PHP compiler and passed directly to the web browser. If you look at the example below you can see what a full PHP script might look like:

  Recommended usage:

  The code above is simply HTML, with just a bit of PHP that prints out today’s date using the built-in date function. As mentioned above, all of the plain HTML in the code above will be ignored by the PHP compiler and passed through to the web browser untouched.

  See how easy that is? Integrating PHP and HTML is really very simple. Just remember that at its core, a PHP script is just an HTML page with some PHP sprinkled through it. If you want, you can create a PHP script that only has HTML in it and no tags, and it will work just fine.

  More advanced techniques:

  • Menu Item 1
  • Menu Item 2
  • Menu Item 3
  • Menu Item 4
  • Menu Item 5

  PHP in HTML using short_open_tag

  PHP in HTML using short_tags:

  Have in mind that if you want to build a website compatible with as many platforms as possible, you should not rely on short_tags.

  HTML in PHP using echo

  A possible way to integrate HTML tags in a PHP file is via the echo command:

  Possible yet not recommended usage:

  
  echo ««;
  echo » «;
  echo » echo «Hello, today is «;
  echo date(‘l, F jS, Y’); //other php code here echo ««;
  echo ««;
  ?>

  This will, however, affect the HTML Code Coloring option in most HTML/PHP editors, which allows for easy understanding of the role of HTML tags. You should escape each double quote within the HTML code with a backslash.

  PHP in HTML — file extensions

  When a given file contains PHP code, it must have a PHP extension. In most cases this is .php, but you can also configure the .htaccess file to read the PHP code in the HTML file without renaming it or changing its extension. Below you can view the «handlers», which will have to be added in order to achieve this

  For a normally configured web server:

  A web server running FastCGI:

  AddHandler fcgid-script .html .htm Note: this is tested and works with the NTC web hosting servers. If you are using a different hosting provider, consult them for assistance. Additionally, if you are faced with constant problems there, you can consider switching to NTC Hosting in order to get the PHP optimized stable servers you need.

  HTML in PHP

  You can also use HTML code in a PHP script. This can be very useful if you have built your whole page in PHP, but want to include a custom HTML form, for example. All that you need to do is reverse the order of the HTML and PHP opening tags, opening the page with PHP:

  Using HTML in PHP:

  While this looks a bit complicated, it actually saves you a lot of code. Here, we are using the $PHP_SELF super global, which allows us to use the value of the fields, specified under it, in the same file. Usually, for such forms two files are created — the first one is the HTML form itself and the second one is the backend PHP file, which does all the work.

  If you already have a complicated PHP application, which relies on a great number of files, and you just want to keep everything as simple as possible, this can be of great assistance.

  PHP with NTC Hosting

  NTC Hosting offers its clients an ultimate web hosting solution. All our web hosting plans provide support for HTML and give you the possibility to choose between PHP4and PHP5

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  How to Use HTML Inside PHP on the Same Page

  

  Here in this file as you can see that PHP code is being put inside html tags namely HTML tag and BODY tag and php code is written inside PHP delimiters (lines 4 and 7) $name=”your name”; is a variable that stores the string inside ” ” and here string stores in variable name is Your name $ is used to declare a variable in PHP. Right now this is the only thing I know about variables and how to declare them in PHP. I am planning to read more about it later and then I’ll record what I understand through the blog post. print $name; Here I have used Print to show the value stored in the variable $name .

  print is not actually a real function (it is a language construct) so you are not required to use parentheses with its argument list.

  There is more to this function I suppose and will study it in detail. I could also have used echo to obtain the same thing. In line 10 see that I have put PHP code inside the bold html tag ( ) which resulted in bold faced “your name” string. So this way you can put your PHP scripts inside any HTML tags. There are other alternative PHP delimiters you can use to tell server to distinguish between your php script and other webpage elements.
  Although these alternative PHP delimiters can be used but I have read that these forms should be avoided and you in practice should use following PHP delimiter as used firstly inside HTML file

  Html code inside PHP tags and using echo or print to show those HTML elements

  We can use html tags inside PHP also as given below

  " echo "" $name="your name"; print $name; echo "
  " echo "" print $name; echo "" echo "" echo "" ?>

  So we can basically echo all the HTML construct and get it working.Another example could be

  Hope you like post on HTML Inside PHP

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