AIDEC SpaceX

<?php

$a=10;
$b=5;
$c=15;
$d=20;
echo ‘$a=10 $b=5 $c=15 $d=20<br><br>’;

echo ‘1.前置遞增<br>’;
echo ‘++$a =’.++$a.'<br>’;
echo ‘前置遞增後，這時$a=’.$a.'<br><br>’;

echo ‘2.後置遞增<br>’;
echo ‘$b++ =’.$b++.'<br>’;
echo ‘後置遞增後，這時$b=’.$b.'<br><br>’;

echo ‘3.前置遞減<br>’;
echo ‘$–c =’.–$c.'<br>’;
echo ‘後置遞增後，這時$c=’.$c.'<br><br>’;

echo ‘4.後置遞減<br>’;
echo ‘$d– =’.$d–.'<br>’;
echo ‘後置遞增後，這時$d=’.$d.'<br><br>’;
?>

<?php

$a=9; $b=2;

$a += $b; //加法指派

echo $a; // $a=11

 

$a=9; $b=2;

$a *= $b; //乘法指派

echo $a; //$a=18

 

$a=9; $b=2;

$a /= $b; //除法指派

echo $a; //$a=4.5

 

$a=9; $b=2;

$a %= $b; //餘數法指派

echo $a; //$a=1

?>