php training workshop by vtips
Post on 24-May-2015
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DESCRIPTION
TRANSCRIPT
BRIEF HISTORY
PHP development
began in 1994.
Rasmus Lerdorf
CGI Perl scripts used to
maintain his personal
home page.
PHP FULL FORMS
PERSONAL HOME PAGE PHP: HYPERTEXT
PREPROCESSOR
DEFINITION
PHP is a server side scripting language that is embedded in HTML. It is used to manage
dynamic content in your website.
WAMP SERVER
It automatically installs apache server.
Configures a MySQL database
Installs PHP support applications for easy mantainence and configuration.
"Hello World" Script in PHP
<HTML>
<HEAD> <TITLE> First program <TITLE> </HEAD>
<BODY> HELLO WORLD! </BODY
</HTML>
<BODY> <?php echo "Hello, World!"; ?>
PHP is embedded in
HTML.
VARIABLES IN PHP
All variables are declared with leading
dollar($) sign.
$sum=34; $sum=“hiii”;
PHP does a good job of automatically converting
types from one to another when
necessary.
Variable can, but do not need to be declared before assignment.
$vary=34; $many=5.34;
OPERATORS
Arithmetic Operators
Logical (or Relational) Operators
Assignment Operators
Conditional (or ternary) Operators
DATE FUNCTION IN PHP
• date(format)
• Print date with time
EXAMPLE:-
DATE( );
EXAMPLE:-
DATE( “d-m-y h:m:s” );
Time zones
• To set the time zone
• To get the time zone
date_default_timezone_set();
date_default_timezone_get();
ARRAYS IN PHP
• Numeric array
• Associative array
An array with a numeric index. Values are stored and accessed in linear fashion
An array with strings as index. This stores element values in association with key values rather than in a strict linear index order.
Example (Numeric arrays)
• <?php$cars=array("Volvo","BMW","Toyota");
• Echo “I like”.$cars[2];• ?>
Example (associative array)
• <html> • <body> • <?php • $salaries['mohammad'] = "high"; • $salaries['qadir'] = "medium"; • $salaries['zara'] = "low";• echo "Salary of qadir is ". $salaries['qadir']."<br/>"; • ?> • </body>• </html>
HEADER,INCLUDE ANDREQUIRE
• HEADER
• INCLUDE
• REQUIRE
IT IS USED TO REDIRECT TO ANOTHER PAGE.
IT IS USED TO INCLUDE THE ANOTHER PAGE INTO THE CURRENT PAGE.
SAME AS INCLUDE.
DATABASE CONNECTION
STEP 1 :- TO ESTABLISH CONNECTION
<? PHP
$LINK=MYSQL_CONNECT(“LOCALHOST”,”ROOT”,””,”myd”);
IF($LINK)
{
ECHO “CONNECTION ESTABLISHED”
}
mysql_connect(host,username,password,databasename);
MYSQL BASIC QUERIES
• TO CREATE DATABASE
• TO CREATE TABLE
• TO LIST THE DATA
CREATE DATABASE DB_NAME;
CREATE TABLE TB_NAME(COL_NM1 DATATYPE,COL_NM2 DATATYPE……);
SELECT * FROM TABLE_NAME;
• TO INSERT VALUES IN TABLE
INSERT INTO TABLE_NAME VALUES(VALUE1,VALUE2……..VALUEN);
QUERIES TO BE USED WITH MYSQL
• MYSQLI_CONNECT();
• The mysqli_connect() function opens a MySQL connection.
• This function returns the connection on success, or FALSE on failure.
CONT..
• MYSQLI_QUERY($CON,”QUERY”);
• MYSQLI_CLOSE($CON);• Closes a previously opened database
connection
FETCHING DATA FROM MYSQL DATABASE
<?php$link=mysqli_connect("localhost","root","","mys");
if($link){
$tab=mysqli_query($link,"select * from m");while($row=mysqli_fetch_row($tab))
{echo "<br>"."value is:",$row[0];}
mysqli_close($link);}
Else{
echo "error";}
?>
ORDER BY RAND() FUNCTION IN MYSQL
• MySQL has a ORDER BY RAND() function that can be used to randomize the set of values.
• SYNTAX• SELECT * FROM TABLE_NAME ORDER
BY RAND();
WORDPRESS
WordPress is a free and open source blogging tool and a content-management system based on PHP and MySQL.
WordPress is an OPEN SOURCE project, which means there are hundreds of people all over the world working on it.
WordPress started as just a blogging system, but has evolved to be used as full content management system and so much more through the thousands of plugins and widgets and themes. WordPress is limited only by your imagination.
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