php实例：1到9之间三个数相加等于15_PHP教程

$j = 0; $k = 0;$m = 0;
for ($i = 0;$i < 1000;$i++)
{
$a1 = rand(1,9);
$a2 = rand(1,9);
$a3 = rand(1,9);
if ($a1+$a2+$a3 === 15)
{
$m++;
if($a1 === $a2 or $a1 === $a3 or $a2 === $a3)
{
echo "有重复的值".$a1."+".$a2."+".$a3."\n";
$j++;
}
else
{
echo $a1."+".$a2."+".$a3."=15"."\n";
$k++;
}
}
}
echo "等于15的次数有".$m."次\n等于15但是有重复的次数有".$j."次\n等于15而且没有重复的次数".$k."次";

http://www.bkjia.com/PHPjc/364661.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/364661.htmlTechArticle?php $j = 0; $k = 0;$m = 0; for ($i = 0;$i 1000;$i++) { $a1 = rand(1,9); $a2 = rand(1,9); $a3 = rand(1,9); if ($a1+$a2+$a3 === 15) { $m++; if($a1 === $a2 or $a1 === $a3 or $a2 === $...