Session_id() returns the session id for the current session.
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how execute different code depending on the number and type of arguments passed to a method?
PHP doesn't support method polymorphism as a built-in feature.
However, you can emulate it using various type-checking functions. The following
combine( ) function uses is_numeric(),
is_string(), is_array(), and is_bool(… Read More
Top PHP Interview Questions with Answers For Job
What is PHP?
PHP is a server side scripting language used for web development applications.
Php is the powerful tool for making dynamic website.
Many … Read More- how eliminate an object?
Objects are automatically destroyed when a script terminates.
To force the destruction of an
object, use unset( ):
$car = new car; // buy new car
...
unset($car); // car wreck
… Read More
- What is MVC?
MVC- Model, View, Controller - is simply
Model - contains data access code and all of you business logic code.
View - Contains markup/design code, generally html,xml, json.
Controller - contains very little… Read More
- find the number of parameters passed into function in PHP?
func_num_args() function returns the number of parameters/arguments passed to a function in PHP.
… Read More
- Scope Resolution Operator?
:: is the scope operator it is used to call methods of a class that has not been instantiated.
… Read More
- how create a new instance of an object?
Define the class, then use new
to create an instance of the class:
class user {
function load_info($username) {
// load profile from database
}
}
$user = new user;
$user->load_info($_REQUEST['username'… Read More
- what is ob_start?
ob_start turns on output buffering,
… Read More
- php.ini Basics
After you have compiled or installed PHP, you can still change its behavior
with the php.ini file. On Linux/UNIX systems, the default location for this file is
/usr/local/php/lib or the lib subdirectory of the PHP installati… Read More
- difference between include and require?
Answer: It"s how they handle failures. If the file is not found by require(), it will cause a fatal error and halt theexecution of the script. If the file is not found by include(), a warning will be issued, but execution wi… Read More
- What is SQL Injection?
SQL Injection is the hacking technique which attempts to pass SQL
commands (statements) through a web application for execution by the
backend database.
it can be prevented by mysql_real_escape_string() function of PHP.
… Read More
- want to link two objects, so when you update one, you also update the other?
Use =& to assign one object to another by
reference:
$adam = new user;
$dave =& $adam;
… Read More
- How register the variables into a session?
session_register ($session_var) function.
(adsbygoogle = window.adsbygoogle || []).push({});
… Read More
What are “GET” and “POST”?
GET: we are submitting a form to login.php, when we do submit or similar
action, values are sent through visible query string (notice
./login.php?username=…&password=… as URL when executing the script
login.php) and i… Read More- how access a method in the parent class that's been overridden in the child?
Prefix parent:: to the method
name:
class shape {
function draw( ) {
// write to screen
}
}
class circle extends shape {
function draw($origin, $radius) {
// validate data
if ($radius > … Read More