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13 Aug 2015

Get value from drop down box using PHP

The drop down box allows you to select one or more values from it. The HTML tag "select" is also known as "drop down" or "pul down" box.You can get value from drop down box using PHP while form submitting.

HTML form with drop down box

The below example describes how to create HTML form with drop down box.

<html>
<body>
<form action="#" method="post">
<select name="country">
<option value="USA">USA</option>
<option value="United Kingdom">United Kingdom</option>
<option value="France">France</option>
<option value="Russia">Russia</option>
<option value="India">India</option>
</select>
<input type="submit" name="submit" value="Submit">
</form>
</body>
</html>

Retrieve input data from drop down box using PHP

You can retrieve input data from drop down box using following types in PHP.

$_POST['drop_down_name'] (if method is post)

$_GET['drop_down_name'] (if method is gett)

$_REQUEST['drop_down_name'] (if method is either post or get)

The following PHP script describes how to retrieve input data from drop down box while form submitting.

While submitting form with select country from drop down box, you can get selected country as output.

Related Post:

Store form values into MySQL table using PHP

12 May 2014

Sorting column with pagination by clicking column header using php and mysql

All of you know how to sorting column while clicking column header like mysql table in database through my previous post. Don't you know? Please visit this sorting column by clicking column header using php .

Now we are going to see about sorting column with pagination like table in mysql database. You sorting column by clicking column header in mysql table and you paginated to next page. You will get result followed by next value.
ie, you sort column by id. First 30 values displayed in first page in mysql table. When you paginate to next page, you will get output from 31st to 60 in your mysql table. Can you make your table like mysql table with sorting and pagination? Yes, you can also done pagination using php.
Already you know the sorting concepts. So now we will see sorting with pagination concepts.

1. Start and limit values based on page number:

$limit=10;
$page=$_GET['p'];
if($page=='')
{
$page=1;
$start=0;
}
else
{
$start=$limit*($page-1);
}

Where,
$limit is the number rows per page.
$page is page number.
$start is starting point of limit in mysql query.

2. Total number of data in mysql table:
Then we need to calculate the total number of data in table. Then find the maximum pages like below:

$total_values=mysql_query("SELECT game_ID, category_Name, game_Title FROM table1");
$total=mysql_num_rows($total_values);
$maxpage=ceil($total/$limit);

Where,
mysql_num_rows() returns the numbers results in numeric.
ceil() returns the whole digit number. ie, ceil(2.3) => 3.
$maxpage returns the number of pages.

3. Function for pagination:

function pagination($maxpage,$page,$url,$field,$sort)
{
//After you sorting your table by clicking particular column, the following trick is used to display
//values with similar sorted values.
if($sort=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
echo'<ul style="list-style-type:none;">';
for($i=1; $i<=$maxpage; $i++)
{
if($i==$page)
{
echo'<li style="float:left;padding:5px;">'.$i.'</li>';
}
else
{
echo'<li style="float:left;padding:5px;"><a href="sort.php?p='.$i.'&sorting='.$sort.'&field='.$field.' ">'.$i.'</a></li>';
}
}
echo'</ul>';
}
pagination($maxpage,$page,$url,$field,$sort);

Where, you have to use small tricks. You have to pass the sorting and field values in url using function.
ie, Already we set if the url get 'ASC' value, then it will take as 'DESC'. This is for sorting. Similarly, you have to do same thing for pagination.

Sorting column with pagination by clicking column header:

The total php script as follows for both sorting and pagination by clicking column header:

<?php
error_reporting(E_ALL ^ E_NOTICE);
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new');
$field='game_ID';
$sort='ASC';
if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else { $sort='ASC'; }
}
if($_GET['sorting'])
{
if($_GET['field']=='game_ID')
{ $field = "game_ID"; }
elseif($_GET['field']=='category_Name')
{ $field = "category_Name"; }
elseif($_GET['field']=='game_Title')
{ $field="game_Title"; }
}
//pagination
$url='sort.php';
$limit=10;
$page=$_GET['p'];
if($page=='')
{
$page=1;
$start=0;
}
else
{
$start=$limit*($page-1);
}

$sql = "SELECT game_ID, category_Name, game_Title FROM table1 ORDER BY $field $sort limit $start, $limit";
$total_values=mysql_query("SELECT game_ID, category_Name, game_Title FROM table1");
$total=mysql_num_rows($total_values);
$maxpage=ceil($total/$limit);
$result = mysql_query($sql) or die(mysql_error());
echo'<table border="0">';
echo'<th><a href="sort.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="sort.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="sort.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>';
while($row = mysql_fetch_array($result)) {
echo'<tr><td>'.$row['game_ID'].'</td><td>'.$row['category_Name'].'</td><td>'.$row['game_Title'].'</td></tr>';
}
echo'</table>';
function pagination($maxpage,$page,$url,$field,$sort)
{
//After you sorting your table by clicking particular column, the following trick is used to display
//values with similar sorted values.
if($sort=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
echo'<ul style="list-style-type:none;">';
for($i=1; $i<=$maxpage; $i++)
{
if($i==$page)
{
echo'<li style="float:left;padding:5px;">'.$i.'</li>';
}
else
{
echo'<li style="float:left;padding:5px;"><a href="sort.php?p='.$i.'&sorting='.$sort.'&field='.$field.' ">'.$i.'</a></li>';
}
}
echo'</ul>';
}
pagination($maxpage,$page,$url,$field,$sort);
?>

Now you will get output like this:

Display table data in both ascending and descending order by clicking column header using php

Now you can sorting column with pagination by clicking column header.

Related Post:

Simple pagination concepts using php and mysql
Pagination using php, mysql and ajax

7 May 2014

Sorting column by clicking column header with php and mysql in table

All of you use the tables in mysql database. When you click the column header at first time, it displays values in ascending order. Likewise it displays values in descending order, while clicking field name second time. Normally the table look like this:

sorting column values using PHP and Mysql at phponwebsites

When you click the category_Name field, it display value by ascending order as follow as:

ascending and descending column values while clicking column header using PHP and Mysql at phponwebsites

We can make our table like tables in mysql database. We can sorting values in column by clicking filed name. It can be done by PHP.
Follow the below steps.
1. Connect file with mysql database as follows as:

mysql_connect('server_name','username','password');
mysql_select_db('db_name');

where,
- server_name means localhost,
- username is username of your database
- password is password of your database
- db_name is name of your database

2. Then, you need to sorting tables based on column filed name. So you have to pass the field name in url. Similarly, you sort table values both ascending and descending. So you need to also pass order types in url. By default, table values displays in ascending. You can fixed order types and also field name.

$field='game_ID';
$sort='ASC';

where, the mysql table display values by ascending order based on game_ID

Now your headings should be like this.

<th><a href="table1.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>

where,
- table1.php is the name of file.
- $sort means order type either ascending or descending
- game_ID, category_Name, game_Title are field names in mysql table.

3. Now you need get the values from url.

if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else { $sort='ASC'; }
}
if($_GET['field']=='game_ID')
{
$field = "game_ID";
}
elseif($_GET['field']=='category_Name')
{
$field = "category_Name";
}
elseif($_GET['field']=='game_Title')
{
$field="game_Title";
}

where, you handle your statergies. ie, If sorting value is ascending, then you will sort table by descending. Likewise you'll sort table by ascending, if sort value is descending. Then you need to get column field values.

4. Then you write a query in which both order types and field name should be present. The mysql query should be like this.

SELECT game_ID, category_Name, game_Title FROM yobash_game ORDER BY $field $sort

where,
- $filed is a default field name ie, gameId
- $sort is a default order type already we fixed. ie. ASC

Sorting column by clicking column header

5. Finally combine all the PHP codes as follows as:

table1.php

<?php
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('db_name') or die(mysql_error());
$field='game_ID';
$sort='ASC';
if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
}
if($_GET['field']=='game_ID')
{
$field = "game_ID";
}
elseif($_GET['field']=='category_Name')
{
$field = "category_Name";
}
elseif($_GET['field']=='game_Title')
{
$field="game_Title";
}
$sql = "SELECT game_ID, category_Name, game_Title FROM yobash_game ORDER BY $field $sort";
$result = mysql_query($sql) or die(mysql_error());
echo'<table border="1">';
echo'<th><a href="table1.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>';
while($row = mysql_fetch_array($result))
{
echo'<tr><td>'.$row['game_Id'].'</td><td>'.$row['category_Name'].'</td><td>'.$row['game_Title'].'</td></tr>';
}
echo'</table>';
?>

Finally you'll get PHP scripts for sorting table when you click the column filed name. Now you can sort tables as like as tables in mysql database.

Related Post:
Simple pagination concepts using php and mysql
Pagination using php, mysql and ajax

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