My friends can you help me please?

Question

so i have a small problem ...
what is difference between x++ and --x
when i do many challenges but... just i have this problems
I'm waiting you're answers..
/*i know the difference but when i go to practice i have an error. */

Answer 1

(a++ )== (a = a +1)

Answer 2

welcome so are you doing well in php right now ?

Answer 3

x++ is called post-increment -- it increments the variable after it returns the original value as the value of the expression

--x is called pre-decrement. It Decrease the value first.

Answer 4

but what about ++z

Answer 5

++z is oposit of --z. It called pre increment.

Answer 6

heyy @ismail look it's very easy
post increment
$x = 1;
echo $x++ // out out 1 but $x next time will equal 2

we increment the value but we don't assigne it
another example
$x = 1;
$y = $x++; // here $y take just 1 and $x will be 2 if we call it

but here
$x = 1;
echo ++$x // $x will equal 2
*******
$x = 1;
$y = ++$x; // $x will be 2 and $y will be also equal 2

Answer 7

thank my friend @Said

Answer 8

yes thank you my brother's @said
now when i challenge anyone i got 5/5 on php