PHP Developers – Page 5 – Tutorials Posted by Sudheesh.R

What is the difference between PHP session and cookie?

Sudheesh.R

The main difference between sessions and cookies, ie, cookies are stored in the user’s browser, and sessions are not.

Cookie
A “cookie” is a file that is physically stored on browser(your computer) and retained when you leave a web site and go somewhere else.

If a user has a login … Read more

How can we create a file using php script ?

Sudheesh.R

In PHP, fopen() function is used to open files. (If does not exist,it will create a new file. It also helps to open file for writing(w) and appending(a).)

Create a File using fopen()

<?php

$fileName = “testFile.txt”;

$fileHandle = fopen($fileName , ‘w’) or die(“can’t open file”);

fclose($fileHandle );

How can we change the first letters to capital letter of “first name” and “last name” from single name string using PHP ?

Sudheesh.R

ucwords() helps to uppercase the first character of each word in a string.

First letter to Capital letter of “First name” and “Last name” using PHP

<?php

$name = ‘rajesh varma’;

$name = ucwords($name);

Output : Rajesh Varma… Read more

What is the differences between GET and POST methods ?

Sudheesh.R

In GET Method have some limit like only 2Kb data able to send for request.
But in POST method unlimited data can we send.when we use GET method requested data show in url but not showing in POST method. So POST method is good for send sensitive request. … Read more

What is the differences between require() and include() in PHP ? )

Sudheesh.R

In PHP, include() and require() used to include a file. But when included file not found
Include() send Warning where as require() send Fatal Error .… Read more

What is the use of header() function in php ?

Sudheesh.R

The header() function sends a raw HTTP header to a client.We can use herder()
function for redirection of pages. It is important to notice that header() must
be called before any actual output is seen. (otherwise use @ob_start() before header())… Read more

What is the use of htaccess?

Sudheesh.R

In several web servers (most commonly Apache), .htaccess (hypertext access) is the default name of a directory-level configuration file that allows for decentralized management of web server configuration. The .htaccess file is placed inside the web tree, and is able to override a subset of the server’s global configuration; the … Read more

Create an array using PHP

Sudheesh.R

In PHP, array() helps to creates an array, with keys and values. If you skip the keys when you specify an array, an integer key is generated, key index starting at 0 and increases by 1 for each value.

Syntax :

array(key =value)

Create an array using PHP

<?php

PHP Array functions

Sudheesh.R

PHP have some inbuilt functions for managing arrays, functions are

array_change _key_case

Returns an array with all string keys to lowercase or uppercase letter(s).

array_chunk

Split an array into chunks

array_combine

Creates an array by using one array for keys and another for its values

array_count _values

Counts all the

What is the difference Between array_merge() and array_combine()

Sudheesh.R

array_merge():- array_merge() function Merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.
If the input arrays have the same string keys, then the value for that key of first array … Read more