各种99乘法表
教科书写法：
<?php
for($i = 1; $i <= 9; $i++){
for($j = 1; $j <= $i; $j++){
echo $i .'*'. $j .'='. $i*$j .' ';
}
echo "<br/>";
}
while：
$i=1;
$j=1;
while($i<10){
echo "{$j}*{$i}=".$i*$j.' ';
if($i==$j){
echo "<br/>";
$j=1;
$i++;
}else{
$j++;
}
}
for里边写上俩游标：
<?php
function test(){
for($i=1, $j=1; $j<=9; $i++){
echo $i . "x" . $j . "=" . $i * $j . " ";
if($i == $j){
$i = 0;
$j++;
echo '<br />';
}
}
}
test();
?>文青程序员：
<?php
$tpl="AX%d=A ";
$p='/((A)X(\d+)=(A))/e';
for ($i=1;$i<=9;$i++) {
$j=1;
$s=str_repeat(sprintf($tpl,$i),$i);
preg_replace($p,'printf("%dX%s=%d\t",$j,"\\3",\\3*($j++));',$s);
echo "\n";
}
苦力：
$arr = array(
9,8,7,6,5,4,3,2,1,
8,7,6,7,4,3,2,1,
7,6,5,4,3,2,1,
6,5,4,3,2,1,
5,4,3,2,1,
4,3,2,1,
3,2,1,
2,1,
1,
);
$m=0;
foreach($arr as $v) {
if($m < $v) {
echo " <br /> \n";
$m = $v;
}
echo "$m * $v = " . ($m * $v) . " ";
if($v==1) {
$m = 0;
}
}
2B：
$table = "1 * 1 = 1 \n1 * 2 = 2 2 * 2 = 4 \n1 * 3 = 3 2 * 3 = 6 3 * 3 = 9 \n1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16 \n1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25 \n1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36 \n1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49 \n1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64 \n1 * 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 \n";
do {
printf("%s", $table);
} while (0);
老夫蛋疼了写的：
<?php
for ($i = 0; $i < 81; $i++) {
$a = $i % 9 + 1;
$b = floor($i / 9 + 1);
if ($a <= $b){
echo $a . '*' . $b . '=' . $a * $b . ' ';
}
if ($a == 9){
echo '<br>';
}
}