In this article, you will find php validation code for:
1) Interger Validation
2) String Validation
3) Decimal Validation (two digits after decimal)

Problem:
I want to create a dynamic table with a row starting after certain number of columns, i.e. like, i want to create an html table which automatically generate new row after 3 columns in a row.
Solution:

$content = array(1, 2, 3, 4, 5, 6, 7, 8, 9);
<table border="1" width="50%">
<tr>
<?php
$counter = 0;
foreach($content as $data) {
if($counter != 0 && $counter%3 == 0) {
?>
</tr><tr>
<?php
}
?>
<td>
<?php echo $data; ?>
</td>
<?php
$counter++;
}
?>
</tr>
</table>

Problem:
Concatenate and fetch data from two fields of database and then break it again.
Solution:

Below is the code with sufficient comments on making a tree navigation menu in PHP.
A single page holding different links. :-D
Download link below:

Hello everyone! here is a simple and complete tutorial to add, edit, delete, login, and register in PHP with MySQL database.
The description is present in the code.. in comments :D I hope those comments are sufficient to describe the code. The database part is in the sql file named ‘database.sql’.

Here is the php code for file upload (image upload in this case) with description included within the code:
There are two files. ‘fileupload.html’ contains the form to upload file and ‘upload.php’ contains the php code.

< ?php
/* creating a class with two variables and a function */
class abc
{
var $name = "Ram";
var $surname = "Sharma";
function greet()
{
echo “Welcome! $this->name $this->surname”;
}
}
class xyz extends abc
{
var $middlename = “Kumar”;

At first create database named ‘test’ in mysql. Use ‘test’. Then create table ‘project’.
MySQL queries for the above tasks ::

create database test;
use test;
create table project (id int(9) not null auto_increment, username varchar(50), password varchar(50), time datetime, primary key(id));

Now the php code::