PHP is perfect for handling the data collected by HTML forms. You can process the forms and use the data in PHP. The data can then be emailed or stored in a database. The information then can be processed using POST or GET method. The method is specified when creating the form in HTML. Depending upon this method, you have…
In PHP there exists what is known as super global variables. These variables are usable from anywhere or any php file or script. They do not need to be pre-defined. Their values also need not be specified. They are used to hold certain values such as ip addresses, domain names, referrers etc. These superglobals are associative arrays. $_SERVER This is…
Cookies are used to store values and information. They are stored by the browser on the client’s side. So you can access cookies from multiple pages of your website. When they are stored, the data is URLencoded and they are decoded during retrieval. While setting a cookie, you can set a name, value, expiration date and other additional details like…
If you have to send email in PHP, then simply use the in-built mail() function. It must be enabled by your PHP web host. It normally is. If you need to see whether PHP mail is activated or not, just try the simplest example from below. If the mail is delivered, then the host supports PHP mail. Here’s a simple…
It is very important to pay attention to time zones in PHP. Your server might be hosted in one location while your visitors might be in another time zone. The local time of your visitors will be different from your server’s. To handle such differences, there are several inbuilt PHP functions. These functions allow you to easily tell the timezone…
In PHP, the time() function is used to display the current Unix timestamp in milliseconds. Of course, a whole lot more can be achieved with this and other related functions. You can use the time function to find out the unix timestamp. This can later be formatted using the date() function. Example: <?php echo time(); ?> Output: 1414305327 If you…
If you need to work with date and time in PHP, you can use the date() function. It will output the date as well as time in your desired format. There are several formatting options. You can choose among them to decide how the date is displayed. A simple example use of date() function is: <?php echo date(“d M y”);…
Die and Exit These two constructs are equivalent with each other. They are used to stop the execution of the current PHP script. A message can also be printed as well. These are used when there is an error in a script and you want to exit it as soon as a problem is encountered. Like when you try to…
These four functions are used to add a PHP script file in another. This allows you to break your script into several files instead of having a single long file. You could have a file called functions.php with your user defined functions. Then include it in your other files to use those functions. All four of them behave differently. Let…
Variables by Reference Variables can also hold their value as a reference to another value. This means, a variable simply points to another variable. So whatever value the other variable holds, the reference variable also holds the same. For reference assignment we use an ampersand sign (&) after the equals to sign (=) while assigning a variable. Example: <?php $var1…