<?php
//用二维数组写出九九乘法表
$array = array();
for($i=1; $i<=9; $i++)
{
for($j = 1; $j <= $i; $j++)
{
$array[$j . '*' . $i] = $i * $j;
}
}
echo '<pre>';
print_r($array);?>其中$array[$j . '*' . $i] = $i * $j;这句能不能换成用二维数组的方式输出?谢谢了
//用二维数组写出九九乘法表
$array = array();
for($i=1; $i<=9; $i++)
{
for($j = 1; $j <= $i; $j++)
{
$array[$j . '*' . $i] = $i * $j;
}
}
echo '<pre>';
print_r($array);?>其中$array[$j . '*' . $i] = $i * $j;这句能不能换成用二维数组的方式输出?谢谢了
这样?
for($a =1;$a<=9;$a++)
{
for($b =1;$b<=$a;$b++)
{$c =$a *$b;
echo "$b*$a=$c ";
}
echo "<p>";
}
$array = array();
for($i=1; $i<=9; $i++)
{
for($j = 1; $j <= $i; $j++)
{
$array[$j][$i] = $i * $j;
}
}
echo '<pre>';
print_r($array);Array
(
[1] => Array
(
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
[6] => 6
[7] => 7
[8] => 8
[9] => 9
) [2] => Array
(
[2] => 4
[3] => 6
[4] => 8
[5] => 10
[6] => 12
[7] => 14
[8] => 16
[9] => 18
) [3] => Array
(
[3] => 9
[4] => 12
[5] => 15
[6] => 18
[7] => 21
[8] => 24
[9] => 27
) [4] => Array
(
[4] => 16
[5] => 20
[6] => 24
[7] => 28
[8] => 32
[9] => 36
) [5] => Array
(
[5] => 25
[6] => 30
[7] => 35
[8] => 40
[9] => 45
) [6] => Array
(
[6] => 36
[7] => 42
[8] => 48
[9] => 54
) [7] => Array
(
[7] => 49
[8] => 56
[9] => 63
) [8] => Array
(
[8] => 64
[9] => 72
) [9] => Array
(
[9] => 81
))
$array = array();
for($i=1; $i<=9; $i++)
{
for($j = 1; $j <= $i; $j++)
{
$array[$j][$j . '*' . $i] = $i * $j;
//echo $array;
}
}
echo '<pre>';
print_r($array);
?>输出的结果是:
Array
(
[1] => Array
(
[1*1] => 1
[1*2] => 2
[1*3] => 3
[1*4] => 4
[1*5] => 5
[1*6] => 6
[1*7] => 7
[1*8] => 8
[1*9] => 9
) [2] => Array
(
[2*2] => 4
[2*3] => 6
[2*4] => 8
[2*5] => 10
[2*6] => 12
[2*7] => 14
[2*8] => 16
[2*9] => 18
) [3] => Array
(
[3*3] => 9
[3*4] => 12
[3*5] => 15
[3*6] => 18
[3*7] => 21
[3*8] => 24
[3*9] => 27
) [4] => Array
(
[4*4] => 16
[4*5] => 20
[4*6] => 24
[4*7] => 28
[4*8] => 32
[4*9] => 36
) [5] => Array
(
[5*5] => 25
[5*6] => 30
[5*7] => 35
[5*8] => 40
[5*9] => 45
) [6] => Array
(
[6*6] => 36
[6*7] => 42
[6*8] => 48
[6*9] => 54
) [7] => Array
(
[7*7] => 49
[7*8] => 56
[7*9] => 63
) [8] => Array
(
[8*8] => 64
[8*9] => 72
) [9] => Array
(
[9*9] => 81
))可是我想要的结果是
1 * 1 = 1
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81