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Defining a HTML Bookmark
How To Define a Bookmark? A bookmark is a named reference point in an HTML document. If a bookmark can be included in the URL that represents this document, the browser will automatically move the display window to the reference point as soon as the document is open. If you want to define a bookmark...
2017-07-15, 374👍, 0💬

Hyper Link Points to a PDF File
What Happens If a Hyper Link Points to a PDF File? If you want to build a hyper link to allow visitors to access a PDF file by clicking a hyper link, you can put the URL of the PDF file directly in the "href" attribute of the hyper link. If a visitor clicks the link, the browser will fetch the PDF f...
2017-07-03, 374👍, 0💬

HTML Table Cell 'td' Tag/Element
What Is a "td" Tag/Element? A "td" element is a special element that can only be used as a sub-element of a "tr" element. A "td" element defines a column in a row. Here are basic rules about "td" elements: "td" elements are special elements only valid inside "tr" elements. "td" elements can have tex...
2017-05-20, 374👍, 0💬

Verifying If a Key Exists in an Array in PHP
How Do You Know If a Key Is Defined in an Array in PHP? There are two functions can be used to test if a key is defined in an array or not: array_key_exists($key, $array) - Returns true if the $key is defined in $array. isset($array[$key]) - Returns true if the $key is defined in $array. Here is a P...
2017-01-29, 374👍, 0💬

URL Starts with Path or File name
What Happens If a URL Starts with Path or File name? If a URL starts with a path name, the browser will borrow the protocol name, the host name, and the port number from the URL of the current document to make up the missing parts. For example, if the following URL is used in this document you are v...
2017-07-07, 372👍, 0💬

'frame' - Controlling HTML Table Borders
How To Turn On Some Parts of Table Outer Borders? If you don't want to turn all 4 edges of outer borders in a table, you need to use the "frame" attribute, which offer the following options: &lt;table border="1" frame="border"&gt; - Turns on all 4 edges. &lt;table border="1" frame="box"&...
2017-05-13, 371👍, 0💬

Looping through an Array in PHP
How to Loop through an Array in PHP? The best way to loop through an array is to use the "foreach" statement. There are two forms of "foreach" statements: foreach ($array as $value) {} - This gives you only one temporary variable to hold the current value in the array. foreach ($array as $key=&g...
2017-02-03, 371👍, 0💬

HTML Forms and Input Fields
Where to find tutorials of introduction to HTML Forms and Input Fields? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team in introduction to HTML Forms and Input Fields. Clear answers are provided with tutorial exercises on forms and input fields: f...
2017-04-22, 370👍, 0💬

Supporting Multiple Submit Buttons in PHP
How To Support Multiple Submit Buttons in PHP? Sometimes, you may need to give visitors multiple submit buttons on a single form to allow them to submit the form for different purposes. For example, when you show your customer a purchase order in a Web form, you may give your customer 3 submit butto...
2016-11-08, 370👍, 0💬

HTML Keywords 'meta' Tag/Element
What Is the HTML Keywords "meta" Tag/Element? The keywords "meta" element is a special meta element that provides a list of keywords about the HTML document. The keywords "meta" element must include the "name" attribute as, name="keywords". Here is an example: &lt;meta name="keywords" content="X...
2017-06-23, 369👍, 0💬

Splitting a String into an Array in PHP
How To Split a String into an Array of Substring in PHP? There are two functions you can use to split a string into an Array of Substring: explode(substring, string) - Splitting a string based on a substring. Faster than split(). split(pattern, string) - Splitting a string based on a regular express...
2016-12-28, 369👍, 0💬

Passing Arrays to Function in PHP
Can You Pass an Array into a Function? in PHP? You can pass an array into a function in the same as a normal variable. No special syntax needed. Here is a PHP script on how to pass an array to a function: &lt;?php function average($array) { $sum = array_sum($array); $count = count($array); retur...
2016-12-18, 369👍, 0💬

XHTML 'meta' Tag/Element
What Is an XHTML "meta" Tag/Element? A "meta" element is optional child element of the head element. A "meta" element provides one piece of extra information about the XHTML document. Here are some important rules about "meta" elements: Meta elements are optional. Meta elements can only be used as s...
2017-06-28, 367👍, 0💬

Function Returns Data by Value in PHP
How Values Are Returned from Functions? in PHP? If a value is returned from a function, it is returned by value, not by reference. That means that a copy of the value is return. Here is a PHP script on how values are returned from a function: &lt;?php $favor = "vbulletin"; function getFavor() { ...
2016-12-08, 367👍, 0💬

Structure of a URL
What Is the Structure of a URL? The structure of a URL is defined by the URL specification, see http://www.ietf.org/rfc/rfc239 6.txt.Generally, a URL consists of 7 parts: Protocol Name - Identifies the communication protocol through which this resource is made available, like "http://" or "ftp://". ...
2017-07-07, 365👍, 0💬

Using HTML 'div' Elements with CSS Properties
How To Use "div" Elements to Change CSS Properties? As elements containers, "div" elements are perfect places to set CSS properties which will be applied to all elements in the container. Here is a tutorial example of how to set CSS properties on "div" elements: &lt;?xml version="1.0" ?&gt; ...
2017-03-11, 365👍, 0💬

Opening a File for Writing in PHP
How To Open a File for Writing in PHP? If you want to open a new file and write date to the file, you can use the fopen($fileName, "w") function. It creates the specified file, and returns a file handle. The second argument "w" tells PHP to open the file for writing. Once the file is open, you can u...
2016-12-02, 365👍, 0💬

Using isset($_REQUEST('name')) in PHP
How To Avoid the Undefined Index Error in PHP? If you don't want your PHP page to give out errors as shown in the previous exercise, you should consider checking all expected input fields in $_REQUEST with the isset() function as shown in the example script below: &lt;?php if (isset($_REQUEST['n...
2016-11-15, 365👍, 0💬

Setting session.gc_maxlifetime Properly in PHP
How To Set session.gc_maxlifetime Properly in PHP? As you know that session.gc_maxlifetime is the session value timeout period. You should set this value based on the usage pattern of your visitors. Here are some suggestions: # Set it to 20 minutes for a normal Web site: session.gc_maxlifetime = 120...
2016-10-24, 364👍, 0💬

Defining an HTML Hyper Link
How To Define a Hyper Link? If you want to define a hyper link in your HTML document, you need to use an "a" element with the "href" attribute. Here are basic rules about defining a hyper link with "a" element: An "a" element with the "href" attribute defines a hyper link. The "href" attribute is us...
2017-07-15, 363👍, 0💬

Hyper Link Points to a ZIP File
What Happens If a Hyper Link Points to a ZIP File? If you want to build a hyper link to allow visitors to access a ZIP file by clicking a hyper link, you can put the URL of the ZIP file directly in the "href" attribute of the hyper link. If a visitor clicks the link, the browser will fetch the PDF f...
2017-07-03, 363👍, 0💬

HTML Robots 'meta' Tag/Element
What Is the HTML Robots "meta" Tag/Element? The robots "meta" element is a special "meta" element that provides directives to robots who is visiting the HTML document. The robots "meta" element must include the "name" attribute as, name="robots". The "content" attribute must use predefined values of...
2017-06-23, 363👍, 0💬

Accessing Global Variables inside a Function in PHP
How To Access a Global Variable inside a Function? in PHP? By default, global variables are not accessible inside a function. However, you can make them accessible by declare them as "global" inside a function. Here is a PHP script on declaring "global" variables: &lt;?php ?&gt; $intRate = 5...
2016-12-08, 363👍, 0💬

HTML 'form' Element Attributes
What Are the Attributes of a "form" Element? There are 3 commonly used attributes for a "form" element: "action" - Required attribute. Used to specify the URL of the form processing program. "method" - Optional attribute. Used to specify the form submission method: "get" or "post". method="get" is t...
2017-04-19, 362👍, 0💬

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