0408 learning--increase and decrease rhts 040 tomn 040 mide 04

Increment operator and decrement operator
$a = 10;
$a++;
echo $a;

The above $a is the output item, so assign the value first and then perform the operation

$a has a value of 11

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echo "

---

";
$e = 10;
--$e;
echo $e;

$e above is the output item, so it needs to be calculated first and then assigned.

$e value is 9

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echo "

---

";
$b = 10;
$x = $b++ + ++$b;
echo $b." ";
echo $x;
The above ($b + 1) plus (+1 of $b)
++$b is calculated first and then used

At this time, the The value of a $b is 10; the corresponding second value of

is 12

------------------------- ----------------------------------
echo "

---

";
$c = 10;
$z = $c++ + $c++;
echo $c." ";
echo $z;

The above $c++ is used first and then operated

At this time, the value of the first $c is 10;

The second value is 12

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The above introduces the 0408 learning - self-increasing and self-decreasing, including the content of 040,408. I hope it will be helpful to friends who are interested in PHP tutorials.