PHP Sending E-mails

November 12th, 2010 by aBisona 
PHP allows you to send e-mails directly from a script. The PHP mail() Function The PHP mail() function is used to send emails from inside a script. Syntax mail(to,subject,message,headers,parameters) Parameter Description to Required. Specifies the receiver / receivers of the email subject Required. Specifies the subject of the email. Note: This parameter cannot contain any newline characters message Required....

PHP Sessions

November 12th, 2010 by aBisona 
A PHP session variable is used to store information about, or change settings for a user session. Session variables hold information about one single user, and are available to all pages in one application. PHP Session Variables When you are working with an application, you open it, do some changes and then you close it. This is much like a Session. The computer knows who you are. It knows when...

PHP Cookies

November 12th, 2010 by aBisona 
A cookie is often used to identify a user. What is a Cookie? A cookie is often used to identify a user. A cookie is a small file that the server embeds on the user’s computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values. How to Create a Cookie? The setcookie() function is used to set a...

PHP File Upload

November 12th, 2010 by aBisona 
With PHP, it is possible to upload files to the server. Create an Upload-File Form To allow users to upload files from a form can be very useful. Look at the following HTML form for uploading files: <html> <body> <form action=”upload_file.php” method=”post” enctype=”multipart/form-data”> <label for=”file”>Filename:</label> <input...

PHP File Handling

November 12th, 2010 by aBisona 
The fopen() function is used to open files in PHP. Opening a File The fopen() function is used to open files in PHP. The first parameter of this function contains the name of the file to be opened and the second parameter specifies in which mode the file should be opened: <html> <body> <?php $file=fopen(“welcome.txt”,”r”); ?> </body> </html> The...

PHP Include File

November 12th, 2010 by aBisona 
Server Side Includes (SSI) You can insert the content of one PHP file into another PHP file before the server executes it, with the include() or require() function. The two functions are identical in every way, except how they handle errors: include() generates a warning, but the script will continue execution require() generates a fatal error, and the script will stop These two functions...

PHP Date Function

November 12th, 2010 by aBisona 
The PHP date() function is used to format a time and/or date. The PHP Date() Function The PHP date() function formats a timestamp to a more readable date and time. A timestamp is a sequence of characters, denoting the date and/or time at which a certain event occurred. Syntax date(format,timestamp) Parameter Description format Required. Specifies the format of the timestamp timestamp Optional....

PHP $_POST Function

November 12th, 2010 by aBisona 
The built-in $_POST function is used to collect values in a form with method=”post”. The $_POST Function The built-in $_POST function is used to collect values from a form sent with method=”post”. Information sent from a form with the POST method is invisible to others and has no limits on the amount of information to send. Note: However, there is an 8 Mb max size for the...

PHP $_GET Function

November 12th, 2010 by aBisona 
The built-in $_GET function is used to collect values in a form with method=”get”. The $_GET Function The built-in $_GET function is used to collect values from a form sent with method=”get”. Information sent from a form with the GET method is visible to everyone (it will be displayed in the browser’s address bar) and has limits on the amount of information to send. Example <form...

PHP Forms and User Input

November 12th, 2010 by aBisona 
The PHP $_GET and $_POST variables are used to retrieve information from forms, like user input. PHP Form Handling The most important thing to notice when dealing with HTML forms and PHP is that any form element in an HTML page will automatically be available to your PHP scripts. Example The example below contains an HTML form with two input fields and a submit button: <html> <body> <form...

PHP Functions

November 12th, 2010 by aBisona 
The real power of PHP comes from its functions. In PHP, there are more than 700 built-in functions. PHP Built-in Functions For a complete reference and examples of the built-in functions, please visit our PHP Reference. PHP Functions In this chapter we will show you how to create your own functions. To keep the script from being executed when the page loads, you can put it into a function. A function...

PHP Looping – For Loops

November 12th, 2010 by aBisona 
Loops execute a block of code a specified number of times, or while a specified condition is true. The for Loop The for loop is used when you know in advance how many times the script should run. Syntax for (init; condition; increment) { code to be executed; } Parameters: init: Mostly used to set a counter (but can be any code to be executed once at the beginning of the loop) condition: Evaluated...