محمد احمدی نیا ahmadinia.iauk@gmail.com PHP محمد احمدی نیا ahmadinia.iauk@gmail.com.

محمد احمدی نیا ahmadinia.iauk@gmail.com
PHP محمد احمدی نیا

Server-Side Programming language
asp, asp.net, php, jsp, perl, cgi، ... Server HTTP Requests URL(../../*.php) Client Web Server Index.php DB Data HTTP Responses(HTML code) Browser compiler query (PHP compiler) DBMS (mysql) data

Client-Side Scripting versus Server-Side Scripting
Client-side scripts Validate user input Reduce requests needed to be passed to server Access browser Server-side scripts Executed on server Generate custom response for clients Wide range of programmatic capabilities Access to server-side software that extends server functionality like DBMS

Installing a web server

Hosting a website: Self hosting
Install a web server on a computer Local access Using domain <localhost> or IP address Necessary for server-side programming development Global access Register a human-readable domain name Obtain IP address Static: Costs more Dynamic: Needs dynamic DNS system, e.g.

Web server architecture
LAMP: Most popular—fully open source Linux for operating system Apache for web server MySQL for database PHP for server-side scripting Others: WAMP: Uses Windows for operating system, with Apache, MySQL, and PHP WISA: Full Microsoft package Windows Internet Information Server (IIS) SQL Server (enterprise) or Access (small-scale) ASP or ASP.NET

Apache Web Server Currently the most popular Web server Stability
Efficiency Portability Open-source

All-in-one Apache/MySQL/PHP packages
EasyPHP (recommended) Includes PHPMyAdmin for administering MySQL database AbriaSoft Merlin Desktop Edition Includes PHPMyAdmin WAMP Server PHP Triad

Requesting XHTML or PHP documents
Request PHP documents from Apache Save PHP documents in the www folder for EasyPHP Launch web browser With EasyPHP, right-click on the status bar icon and click “Local Web” Enter PHP document’s location in Address field, starting with or

What is PHP? PHP stands for PHP: Hypertext Preprocessor
PHP is a server-side scripting language PHP scripts are executed on the server PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.) PHP is an open source software PHP is free to download and use Cross Platform زبانهای برنامه سازی وب

What is a PHP File? PHP files can contain text, HTML tags and scripts
PHP files are returned to the browser as plain HTML PHP files have a file extension of ".php", ".php3" زبانهای برنامه سازی وب

Why PHP? Structurally similar to C/C++
Supports procedural and object-oriented paradigm (to some degree) All PHP statements end with a semi-colon Each PHP script must be enclosed in the reserved PHP tag <html> <body> <?php echo "Hello World"; ?> </body> </html> <?php … ?> زبانهای برنامه سازی وب

Comments in PHP Use // to make a single-line comment or /* and */ to make a large comment block. <html> <body> <?php //This is a comment /* This is a comment block */ ?> </body> </html> زبانهای برنامه سازی وب

PHP Variables PHP variables must begin with a “$” sign and then a letter or an underscore "_" Example variables name: $x, $_temp, … Case-sensitive ($Foo != $foo != $fOo) In PHP, a variable does not need to be declared before adding a value to it. <?php $foo = 25; // Numerical variable $bar = “Hello”; // String variable $foo = ($foo * 7); // Multiplies foo by 7 $bar = ($bar * 7); // Invalid expression ?> زبانهای برنامه سازی وب

Echo The PHP command ‘echo’ is used to output the parameters passed to it The typical usage for this is to send data to the client’s web-browser Syntax void echo (string arg1 [, string argn...]) <?php $foo = 25; // Numerical variable $bar = “Hello”; // String variable echo $bar; // Outputs Hello echo $foo,$bar; // Outputs 25Hello echo “5x5=“,$foo; // Outputs 5x5=25 echo “5x5=$foo”; // Outputs 5x5=25 echo ‘5x5=$foo’; // Outputs 5x5=$foo ?> زبانهای برنامه سازی وب

String Variables A string variable is used to store and manipulate text. The concatenation operator (.) is used to put two string values together. <?php $txt="Hello World"; echo $txt; ?> Hello World <?php $txt1="Hello World!"; $txt2="What a nice day!"; echo $txt1 . " " . $txt2; ?> Hello World! What a nice day! زبانهای برنامه سازی وب

Arithmetic Operators Operator Description Example Result + Addition
$x=$y+2 $x=7 $y=5 - Subtraction $x=$y-2 $x=3 * Multiplication $x=$y*2 $x=10 / Division $x=$y/2 $x=2.5 % Modulus $x=$y%2 $x=1 ++ Increment $x=++$y $x=6 $y=6 $x=$y++ $x=5 -- Decrement $x=--$y $x=4 $y=4 $x=$y-- زبانهای برنامه سازی وب

Assignment Operators Operator Example Same As = $x=$y += $x+=$y
+= $x+=$y $x=$x+$y -= $x-=$y $x=$x-$y *= $x*=$y $x=$x*$y .= $x.=$y $x=$x.$y /= $x/=$y $x=$x/$y %= $x%=$y $x=$x%$y زبانهای برنامه سازی وب

Comparison Operators Given that $x=5, the table below explains the comparison operators: Operator Description Example == is equal to $x==8 is false $x==5 is true != is not equal $x!=8 is true > is greater than $x>8 is false < is less than $x<8 is true >= is greater than or equal to $x>=8 is false <= is less than or equal to $x<=8 is true زبانهای برنامه سازی وب

Logical Operators Logical operators are used to determine the logic between variables or values. Given that $x=6 and $y=3, the table below explains the logical operators: Operator Description Example && and ($x < 10 && $y > 1) is true || or ($x==5 || $y==5) is false ! not !($x==$y) is true زبانهای برنامه سازی وب

Conditional Statements
If...else Statement if (condition) { code to be executed if condition is true } else { code to be executed if condition is not true } زبانهای برنامه سازی وب

Conditional Statements
The Switch Statement switch(n) { case 1: execute code block 1 break; case 2: execute code block 2 break; default: code to be executed if n is different from case 1 and 2 } زبانهای برنامه سازی وب

Arrays Numeric Arrays A numeric array stores each array element with a numeric index. the index are automatically assigned (the index starts at 0) $cars=array("Saab","Volvo","BMW","Toyota"); assign the index manually $cars[0]="Saab"; $cars[1]="Volvo"; $cars[2]="BMW"; $cars[3]="Toyota"; زبانهای برنامه سازی وب

Arrays Associative Arrays
An associative array, each ID key is associated with a value. $ages = array("Peter"=>32, "Quagmire"=>" book", "Joe"=>34); $ages['Peter'] = "32"; $ages['Quagmire'] = " book"; $ages['Joe'] = "34"; زبانهای برنامه سازی وب

PHP Loops The for Loop The for loop is used when you know in advance how many times the script should run. for (variable=startvalue;variable<=endvalue;variable=variable+increment) { code to be executed } <?php for ($i=1; $i<=5; $i++) { echo "The number is " . $i . "<br />"; } ?> زبانهای برنامه سازی وب

PHP Loops The while loop
The while loop loops through a block of code while a specified condition is true. while (variable<=endvalue) { code to be executed } <?php $i=1; while($i<=5) { echo "The number is " . $i . "<br />"; $i++; } ?> زبانهای برنامه سازی وب

PHP Loops The do...while Loop
do { code to be executed } while (variable<=endvalue); <?php $i=1; do { $i++; echo "The number is " . $i . "<br />"; } while ($i<=5); ?> زبانهای برنامه سازی وب

PHP Functions The real power of PHP comes from its functions.In PHP, there are more than 700 built-in functions. Create a PHP Function function functionName() { code to be executed; } <?php function writeName() { echo "Kai Jim Refsnes"; } echo "My name is "; writeName(); ?> زبانهای برنامه سازی وب

PHP Functions Return values
<?php function add($x,$y) { $total=$x+$y; return $total; } echo " = " . add(1,16); ?> زبانهای برنامه سازی وب

User Input and Sending Information
For using the information and storing them to database requires that transform information between web pages. The PHP $_GET and $_POST variables are used to retrieve information from forms and transform information. زبانهای برنامه سازی وب

Sending Information-Get method
The predefined $_GET variable is used to collect values in a form with method="get". Information sent from a form with the GET method displayed in the browser's address bar has limits on the amount of information to send(exceeding 2000 characters). It is possible to bookmark the page. This can be useful in some cases. زبانهای برنامه سازی وب

Sending Information-Get method
<a href= > link to welcome</a> welcome.php : <form action="welcome.php" method=“get"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> <body> Welcome <?php echo $_GET["fname"]; ?>!<br /> You are <?php echo $_GET["age"]; ?> years old. </body> زبانهای برنامه سازی وب

Sending Information-Post method
The predefined $_POST variable is used to collect values from a form sent with method="post". Information sent is invisible to others has no limits on the amount of information to send. However, there is an 8 Mb max size for the POST method, by default(can be changed by setting the post_max_size in the php.ini file). زبانهای برنامه سازی وب

Sending Information-Post method
<form action="welcome.php" method=“post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> welcome.php : <body> Welcome <?php echo $_POST["fname"]; ?>!<br /> You are <?php echo $_POST["age"]; ?> years old. </body> زبانهای برنامه سازی وب

Date() Function The PHP date() function is used to format a time and/or date. date(format,timestamp) format: Specifies the format of the timestamp (Required) d - Represents the day of the month (01 to 31) m - Represents a month (01 to 12) Y - Represents a year (in four digits) Timestamp: Specifies a timestamp. Default is the current date and time (Optional) <?php echo date("Y/m/d") . "<br />"; echo date("Y.m.d") . "<br />"; echo date("Y-m-d"); ?> 2009/05/ زبانهای برنامه سازی وب

include() Function takes all the content in a specified file and includes it in the current file. <html> <body> <?php include("header.php"); ?> <h1>Welcome to my home page!</h1> <p>Some text.</p> </body> </html> زبانهای برنامه سازی وب

Sending E-mails PHP allows you to send e-mails directly from a script.
The PHP mail() Function mail(to,subject,message,headers) Parameter Description to Required. Specifies the receiver / receivers of the subject Required. Specifies the subject of the . message Required. Defines the message to be sent. Each line should be separated with a LF (\n). Lines should not exceed 70 characters headers Optional. Specifies additional headers, like From, Cc, and Bcc. The additional headers should be separated with a CRLF (\r\n) زبانهای برنامه سازی وب

Sending E-mails PHP Simple E-Mail
<?php $to = $subject = "Test mail"; $message = "Hello! This is a simple message."; $from = $headers = "From:" . $from; mail($to,$subject,$message,$headers); echo "Mail Sent."; ?> زبانهای برنامه سازی وب

Sessions 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, store them on the server temporary and are available to all pages in one application. Sessions work by creating a unique id (UID) for each visitor and store variables based on this UID. زبانهای برنامه سازی وب

Sessions Starting a PHP Session
The code above will register the user's session with the server, allow you to start saving user information, and assign a UID for that user's session. <?php session_start(); ?> <html> <body> </body> </html> Note: The session_start() function must appear BEFORE the <html> tag: زبانهای برنامه سازی وب

Sessions Storing a Session Variable
The correct way to store and retrieve session variables is to use the PHP $_SESSION variable: <?php session_start(); // store session data $_SESSION['views']=1; ?> <html> <body> <?php //retrieve session data echo "Pageviews=". $_SESSION['views']; ?> </body> </html> زبانهای برنامه سازی وب

Sessions A simple page-views counter.
The isset() function checks if the "views" variable has already been set. <?php session_start(); if(isset($_SESSION['views'])) $_SESSION['views']=$_SESSION['views']+1; else $_SESSION['views']=1; echo "Views=". $_SESSION['views']; ?> زبانهای برنامه سازی وب

Sessions Destroying a Session
The unset() function is used to free the specified session variable: session_destroy() function completely destroy the session: <?php unset($_SESSION['views']); ?> <?php session_destroy(); ?> زبانهای برنامه سازی وب

MySQL MySQL is the most popular open-source database system.
The data in MySQL is stored in database objects called tables. A table is a collection of related data entries and it consists of columns and rows. زبانهای برنامه سازی وب

Database Tables Databases are useful when storing information categorically. A company may have a database with the following tables: "Employees", "Products", "Customers" and "Orders". A database most often contains one or more tables. Each table is identified by a name (e.g. "Customers" or "Orders"). Tables contain records (rows) with data. زبانهای برنامه سازی وب

Database Tables Below is an example of a table called "Persons":
زبانهای برنامه سازی وب

Queries A query is a question or a request from database
SELECT LastName FROM Persons زبانهای برنامه سازی وب

PHPMyAdmin PHPMyAdmin is used for creating and administering MySQL database زبانهای برنامه سازی وب

Creating Database sample

Creating Table in Database

Length/Values

Table structure Delete Table Perform SQL statement Empty Table

Inserting data into table

Table Browse

Importing Database Browse for file Start record from which row
Choose format

MySQL - Connect to a Database
Before access data in a database, must create a connection to the database. mysql_connect(servername,username,password); Parameter Description servername Optional. Specifies the server to connect to. Default value is "localhost:3306" username Optional. Specifies the username to log in with. Default value is the name of the user that owns the server process(“root”) password Optional. Specifies the password to log in with. Default is "" زبانهای برنامه سازی وب

MySQL - Connect to a Database
Closing a Connection : mysql_close() function <?php $con = mysql_connect("localhost", "root", ""); if (!$con) { die('Could not connect ‘); } // some code mysql_close($con); ?> زبانهای برنامه سازی وب

Query Executation Execute query Select a database
mysql_select_db(“databasename", connection name); mysql_select_db("my_db", $con); Execute query mysql_query("command sql”) mysql_query(“select fname from person”); زبانهای برنامه سازی وب

SQL-Insert Into The INSERT INTO statement is used to insert new records in a table. It is possible to write the INSERT INTO statement in two forms. INSERT INTO table_name VALUES (value1, value2, value3,...) INSERT INTO table_name (column1, column2, column3,...) VALUES (value1, value2, value3,...) زبانهای برنامه سازی وب

SQL-Insert Into <?php $con = mysql_connect("localhost",“root",“ "); if (!$con) { die('Could not connect: ‘); } mysql_select_db("my_db", $con); mysql_query("INSERT INTO Persons (FirstName, LastName, Age) VALUES ('Peter', 'Griffin', '35')"); mysql_query("INSERT INTO Persons (FirstName, LastName, Age) VALUES ('Glenn', 'Quagmire', '33')"); mysql_close($con); ?> زبانهای برنامه سازی وب

SQL- Select The SELECT statement is used to select data from a database. SELECT column_name1, column_name2, …, column_name_k FROM table_name where condition Condition is Comparison statement involves Comparison Operators like: = , >, >= , < , <=, <> زبانهای برنامه سازی وب

SQL- Select mysql_fetch_array() function return the first row from the recordset as an array. Each call to mysql_fetch_array() returns the next row in the recordset. <?php $con = mysql_connect("localhost","peter","abc123"); mysql_select_db("my_db", $con); $result = mysql_query("SELECT * FROM Persons"); while($row = mysql_fetch_array($result)) { echo $row['FirstName'] . " " . $row['LastName']; echo "<br />"; } mysql_close($con); ?> زبانهای برنامه سازی وب

SQL- Select Display the Result in an HTML Table
<?php $con = mysql_connect("localhost","peter","abc123"); mysql_select_db("my_db", $con); $result = mysql_query("SELECT * FROM Persons"); echo "<table border='1'> <tr> <th>Firstname</th> <th>Lastname</th> </tr>"; while($row = mysql_fetch_array($result)) { echo "<tr>"; echo "<td>" . $row['FirstName'] . "</td>"; echo "<td>" . $row['LastName'] . "</td>"; echo "</tr>"; } echo "</table>"; ?> زبانهای برنامه سازی وب

SQL- Update The UPDATE statement is used to modify data in a table.
UPDATE table_name SET column1=value, column2=value2,... WHERE some_column=some_value <?php $con = mysql_connect("localhost","peter","abc123"); mysql_select_db("my_db", $con); mysql_query("UPDATE Persons SET Age = '36' WHERE FirstName = 'Peter' AND LastName = 'Griffin'"); mysql_close($con); ?> زبانهای برنامه سازی وب

SQL- Delete The DELETE statement is used to delete records in a table.
DELETE FROM table_name WHERE condition <?php $con = mysql_connect("localhost","peter","abc123"); mysql_select_db("my_db", $con); mysql_query("DELETE FROM Persons WHERE LastName='Griffin'"); mysql_close($con); ?> زبانهای برنامه سازی وب

For more information… http://www.php.net/manual/en/
زبانهای برنامه سازی وب

محمد احمدی نیا ahmadinia.iauk@gmail.com PHP محمد احمدی نیا ahmadinia.iauk@gmail.com.

Similar presentations

Presentation on theme: "محمد احمدی نیا ahmadinia.iauk@gmail.com PHP محمد احمدی نیا ahmadinia.iauk@gmail.com."— Presentation transcript:

Similar presentations

About project

Feedback

Log in

Auth with social network:

محمد احمدی نیا ahmadinia.iauk@gmail.com PHP محمد احمدی نیا ahmadinia.iauk@gmail.com.

Similar presentations

Presentation on theme: "محمد احمدی نیا ahmadinia.iauk@gmail.com PHP محمد احمدی نیا ahmadinia.iauk@gmail.com."— Presentation transcript:

Similar presentations

About project

Feedback