1~100加總、奇數加總、偶數加總 1~100加總、奇數加總、偶數加總

 

<?php
 
$a = 1;
while ( $a <= 100 ) {
$sum = $sum + $a;
$a++;
}
 
$b = 1;
while ( $b <= 100 ) {
$odd = $odd + $b;
$b+=2;
}
 
$c = 1;
$c++;
while ( $c <= 100 ) {
$even = $even + $c;
$c+=2;
}
 
echo "1-100總和:" . $sum . "<br>";
echo "1-100奇數總和:" . $odd . "<br>";
echo "1-100偶數總和:" . $even;
 
?>
加總結果如下圖: 加總結果如下圖:

 

印*號 印*號

 

<?php
 
for ($a = 1; $a <= 5; $a++){
for($b = 1; $b <= $a; $b++){
echo "*";
}
echo "<br>" ;
}
 
?>
結果如下圖: 結果如下圖: