Ye wo rights
hote hai oops me jo decide krte hai ki kon se class ke object kon se class ke
member,properties
etc ko access kar skte hai.in a simple words ye kisi be property ke visibility
ke bare me decide karte hai.
Access
specifiers 3 trah ke hote hai
Private
Protected
Public
Private-
private
access specifies wo hote hai jo with in a class me he access ho skte hai inhe
outsize se access ne kiya ja skta
Example-jesa
apka mobile phone hai mobile phone personal hota hai ise hmare ilawa koi be use
ne kr skta hai ise aap private man skte
ho
Protected-
Protected vo
hote hai jinhe class ke member aur us class se jo new class extend hoti hai us
class ke member he access kr skte hai
Example-man
lijiye apke pass ek car hai to us car ka use aap be kr skte ho or apki family
ke members be apke bhai bhan children etc
Public-
Public accss
specifiers vo hote hai jinhe koi be
access kr skta hai means
Inhe inside,outside
ya knhi se be koi be member access kr skta hai
Example-
App isme
govt bus ka example le skte ho jinka use koi be kr skta hai andar se bahr se
knhi se be
Class tv{
Public $model=’abc’;
Private $color=’red’;
Protected $volume=5;
}
Class plaza
extends tv{
Public $size=20;
}
Class sony {
Public $cost=10;
}
$tv=new tv;
Echo $tv->model;
Jesa ki aap
example me dekh rhe ho yanha $model public hai
Iska mtlb ye
hai ki hm ise knhi se be access kr skte hai means class tv ke andar se be or plaza
tv ke andar se be
Access or
call kese krte hai-
Jesa ki aap
example me dekh rhe ho hmne tv and plaza class bnane ke bad object bnaya hai
$tv or uske bad echo ke dwara model ko call kiya hai.ise jb aap exexute kroge
to apke pass model ki value abc a jayegi program run hone par kiunki ye public
hai
Ab hm plaza
tv ka object bnakar call krege $color ko
Plaza tv ka
object kese bnaye
$plaza=new
plaza;
Echo $plaza->color;
Bt ab hmare
pass error ayega jo niche btaya hai mene.
Notice: Undefined property: plaza::$color in C:\wamp\www\static\mywapy.php on line 17
Kiunki $color
tv class ka member hai
Or ye
private hai mene apko btaya tha ki private access specifier ko inside class se he access kiya jata hai outside se
nhi
Yanha hmne
$plaza jo object bnaya hai wo plaza class ka hai isi karan hm $color properties ko
access ne kar pa rhe hai
Bt agar hm
$model ko access kr skte hai kiunki wo public hai.....$model ko hm $plaza ke
objects and $tv ke objects dono se access kr skte hai kiunki $model public hai.
Bt hm $color
ko sirf $tv ka object bnaker he access kr skte hai kiunki ye private hai .ise
hm $plaza ka object bnakar access ne kar skte.or na he $sony ka object bnakar.
Ab bat ati
hai $volume ki jo ki protected hai to ise hm $tv,$plaza ka object bnakar access
kr skte hai bt hm ise
$sony k
object bnakr access ne kr skte .because mene apko upar btaya tha ki protect
properties ko sirf us class ke memer or usse extend hue class(means uski child
class)ke member he us property ko access kr skte hai.
To dosto
mujhe ummid hai apko access specifiers ki post achi lgi hogi gar apka koi be
swal ho to plz comment kijiye
Thank you
Team
Gajabwap Web In Hindi
Also read-
Comments
Post a Comment