Question

我需要有关锻炼的帮助。它说我必须在PHP中创建一个小程序，它创建7个随机数（实际上它是一个带有6个随机数的抽奖和1个随机数（互补）在1到49之间）。这些数字必须存储在一个数组中。问题是我必须将这些数字存储在文件中。我这样做了：

$num[1]=rand(1,49);
$num[2]=rand(1,49);
$num[3]=rand(1,49);
$num[4]=rand(1,49);
$num[5]=rand(1,49);
$num[6]=rand(1,49);
$num[7]=rand(1,49);
echo "The numbers are: "; echo $num[1]; echo "-"; echo $num[2]; echo "-"; echo $num[3]; echo "-"; echo $num[4]; echo "-"; echo $num[5]; echo "-"; echo $num[6];
echo "<br>";
echo "Complementary: ".$num[7];

然后我尝试了这样的东西来存储这些数字：

$lott=array($num[1],$num[2],$num[3],$num[4],$num[5],$num[6]);
$comp=array($num[7]);
$arch=fopen("lottery.txt","a") or die("Internal error");
fputs($arch,"Lottery numbers:");
fputs($arch,$_REQUEST['lott']);
fputs($arch,"\n");
fputs($arch,"\n");
fputs($arch, "Complementary number:");
fputs($arch,$_REQUEST['comp']);
fputs($arch,"\n");
fputs($arch,"-------------------------------------------------------");
fputs($arch,"\n");
fclose($arch);
echo "The dates have been stored correctly.";

显然它不起作用。我是php的新手，所以我不知道如何将这些数字存储在一个文件中。

我很感激帮助。

Answer 1

您正在尝试将$_REQUEST['lott']和$_REQUEST['comp']保存到您的文件中。这些变量是否已设定？

只需保存您的$lott和$comp个变量即可。两者都是数组，因此必须先将其转换为字符串，然后才能保存。您可以使用implode()。

$lott=array($num[1],$num[2],$num[3],$num[4],$num[5],$num[6]);
$comp=array($num[7]);
$arch=fopen("lottery.txt","a") or die("Internal error");
fputs($arch,"Lottery numbers:");
fputs($arch,implode(',', $lott));
fputs($arch,"\n");
fputs($arch,"\n");
fputs($arch, "Complementary number:");
fputs($arch,implode(',', $comp));
fputs($arch,"\n");
fputs($arch,"-------------------------------------------------------");
fputs($arch,"\n");
fclose($arch);

这将输出

Lottery numbers:37,27,41,1,2,14

Complementary number:19
-------------------------------------------------------

Answer 2

您可以使用函数implode将数组数据连接成一个字符串：

$lott=array($num[1],$num[2],$num[3],$num[4],$num[5],$num[6]);
$comp=array($num[7]);
$arch=fopen("lottery.txt","a") or die("Internal error");
fputs($arch,"Lottery numbers:");
fputs($arch, implode(' - ', $lott); //HERE
fputs($arch,"\n");
fputs($arch,"\n");
fputs($arch, "Complementary number:");
fputs($arch,$comp[0]); //HERE you get only index 0, because your array have just one item
fputs($arch,"\n");
fputs($arch,"-------------------------------------------------------");
fputs($arch,"\n");
fclose($arch);
echo "The dates have been stored correctly.";

Answer 3

以下是您的答案：代码虽然评论了---

    <?php

        // GENERATE 6 RANDOM NUMBERS BETWEEN 1 AND 49 WITH...       
        $arrRandNumbers = array();

        for($i=1; $i<7; $i++){
            $arrRandNumbers[]   = rand(1, 49);
        }

        // BUILD-UP A STRING FOR THE RANDOM NUMBERS, DELIMITED WITH A NEW LINE CHARACTER
        $strRandom      = "";
        foreach($arrRandNumbers as $randNumber){
            $strRandom .= $randNumber . "\n";
        }

        // STORE NUMBER IN A TEXT FILE... FILE-NAME: random-numbers.txt
        file_put_contents("random-numbers.txt", rtrim($strRandom, "\n"));

        var_dump($arrRandNumbers);

这是另一个变体：

    <?php

        // GENERATE 6 RANDOM NUMBERS BETWEEN 1 AND 49 WITH...
        $arrRandNumbers = array();

        for($i=1; $i<7; $i++){
            $arrRandNumbers[]   = rand(1, 49);
        }

        // GENERATE A COMPLEMENTARY NUMBER: BETWEEN 1 AND 49 WITH...
        $compNum        = rand(1, 49);

        // BUILD-UP A STRING FOR THE RANDOM NUMBERS, DELIMITED WITH 2 SPACES & WRAPPED IN SQUARE BRACKETS
        $strRandom      = "LOTTERY NUMBERS:" .PHP_EOL;
        foreach($arrRandNumbers as $randNumber){
            $strRandom .= "[" . $randNumber . "]  ";
        }

        // TRIM-OFF THE SPACES TO THE RIGHT OF THE LOTTERY NUMBERS:
        rtrim($strRandom);


        // ADD THE COMPLEMENTARY NUMBER TO THE MIX WITH 3 NEW LINES IN-BETWEEN:
        $strRandom     .= "\n\n\nCOMPLEMENTARY NUMBER:\n" . $compNum;

        // STORE NUMBER IN A TEXT FILE... FILE-NAME: random-numbers.txt
        file_put_contents("random-numbers.txt", $strRandom);

        var_dump($arrRandNumbers);

如何存储数组？

4 个答案: