php下的99乘法表的几种循环写法

TzuHsing Su

2018-09-11

2416 次瀏覽

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##php下的99乘法表的几种循环写法##

写的时长太久，而且记不住。
<pre>
 <code>
    <?php
    header("Content-Type: text/html;charset=utf-8");
    function se(){
        echo "<h2>使用for循环生成的99乘法表</h2>";
        echo "<table border='1px', width='600'>";
        echo "<tr>".'<th colspan="9">99乘法表</th>'."</tr>";
        for ($i=1; $i <=9 ; $i++) { 
            # code...
            echo "<tr>";
            for ($j=1; $j <=$i; $j++) { 
                # code...
                echo "<td>".$j."*".$i."=".$j*$i."&nbsp;"."</td>";
            }
            echo "</tr>";
        }
        echo "</table>";
    }
    se();

function sed($kk){

echo $kk*2;

}
    sed(22);

echo "<h2>使用while循环生成的99乘法表</h2>";

// echo "<br>";
    $k=1;
    echo "<table border='1px', width='600'>";
    echo "<tr>".'<th colspan="9">99乘法表</th>'."</tr>";
    while ($k <= 9) {
        # code...
        $a=1;
        echo "<tr>";
        while ($a <= $k) {
            # code...
            echo "<td>".$a."*".$k."=".$a*$k."&nbsp;"."</td>";
            // echo $a."*".$k."=".$k*$a." ";
            $a++;
        }
        echo "</tr>";
        echo "<br>";
        $k++;
    }
    echo "</table>";

echo "<br>";
    echo "<br>";
    echo "<h2>使用do while循环生成的99乘法表</h2>";

echo "<table border='1px', width='600'>";
    echo "<tr>".'<th colspan="9">99乘法表</th>'."</tr>";
    $w=1;
    do {
        # code...
        $q=1;
        echo "<tr>";
        do{
            // echo $q."&nbsp;";
            echo "<td>".$q."*".$w."=".$q*$w."&nbsp;"."</td>";
            $q++;
        }while ($q <= $w);
        echo "</tr>";
        echo "<br>";
        $w++;
    }while ($w<=9);
    echo "</table>";
    echo "<br>";
    echo "<br>";
    echo "<br>";
    echo "<br>";
    echo "<br>";
    echo "<br>";

</code>
</pre>

最后修改：2019-08-09