Hi guyz,
The most useful code snippet in present day web application development is MYSQL PLUS PHP CONNECTION.
for this we require the basic three modules:
Mysql - database
PHP - Backend scripting language
XAMPP - Server
for developing any web application we require to deal with database hence for maintaining database and for manipulating database we require a server and a specific db language.
here im specifying some MYSQL Commands used for DB CONNECTION
Connecting php with server
mysql_connect();
Connecting php with database
mysql_select_db();
For writing any php mysql query we use
mysql_query();
ex: mysql_query("SELECT * FROM table_name WHERE col='$data' ");
For fetching data from this query
ex: mysql_fetch_array($query);
For counting number of rows
ex: mysql_num_rows($query);
Php mysql tester:
An example programm - for database connection:
Programm name : db_connection.php
<?php
$hostname = ''localhost';
$username = 'root'; //for local server
$password = ''; // empty for local server
$database = 'example_db';
mysql_connect($hostname,$username,$password);
mysql_select_db($database);
mysql_close();
?>
Example programm - 2
Program name : check_sql.php
<html>
<head> <title> checking the database </title> </head>
<body>
<?php
include('db_connection.php'); // including the db connection
?>
<center>
<h2> printing all the values from the datase table </h2>
<br><br>
<?php
$k = mysql_query("SELECT * FROM users ORDER BY u_id DESC");
if($mysql_num_rows($k)>0) { // number of rows
while($kk = mysql_fetch_array($k)) // fetching array
{
echo $name = $kk['name']; // printing the names from name coloumn in table
echo $id_no = $kk['id_num']; // printing id numbers from id_number coloumn in table
}
}
?>
</br>
<h2> All the values are printed </h2>
The most useful code snippet in present day web application development is MYSQL PLUS PHP CONNECTION.
for this we require the basic three modules:
Mysql - database
PHP - Backend scripting language
XAMPP - Server
for developing any web application we require to deal with database hence for maintaining database and for manipulating database we require a server and a specific db language.
here im specifying some MYSQL Commands used for DB CONNECTION
Connecting php with server
mysql_connect();
Connecting php with database
mysql_select_db();
For writing any php mysql query we use
mysql_query();
ex: mysql_query("SELECT * FROM table_name WHERE col='$data' ");
For fetching data from this query
ex: mysql_fetch_array($query);
For counting number of rows
ex: mysql_num_rows($query);
Php mysql tester:
An example programm - for database connection:
Programm name : db_connection.php
<?php
$hostname = ''localhost';
$username = 'root'; //for local server
$password = ''; // empty for local server
$database = 'example_db';
mysql_connect($hostname,$username,$password);
mysql_select_db($database);
mysql_close();
?>
Example programm - 2
Program name : check_sql.php
<html>
<head> <title> checking the database </title> </head>
<body>
<?php
include('db_connection.php'); // including the db connection
?>
<center>
<h2> printing all the values from the datase table </h2>
<br><br>
<?php
$k = mysql_query("SELECT * FROM users ORDER BY u_id DESC");
if($mysql_num_rows($k)>0) { // number of rows
while($kk = mysql_fetch_array($k)) // fetching array
{
echo $name = $kk['name']; // printing the names from name coloumn in table
echo $id_no = $kk['id_num']; // printing id numbers from id_number coloumn in table
}
}
?>
</br>
<h2> All the values are printed </h2>
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