如何存储数组？

Question

我需要关于锻炼的帮助。它说我必须在PHP中创建一个小程序，创建7个随机数（实际上它是一个有6个随机数和1到49之间的1个随机数（互补）的抽奖）。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一个文件中。我这样做：

$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]; 

然后我试图像这样来存储数字：

$lott=array($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，这是行不通的。我是新的PHP，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

您试图保存$_REQUEST['lott']和$_REQUEST['comp']到你的文件。这些变量是否设置？

只需保存您的$lott和$comp变量即可。两者都是数组，因此必须将其转换为字符串，然后才能保存它。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

您可以使用功能破灭加入您的阵列中的数据在一个字符串：

$lott=array($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

这里就是你的回答是：代码虽然注释---

<?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); 

这里有另外一个变体：

<?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); 

Answer 4

<?php 

$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]; 

$lott=array($num[1],$num[2],$num[3],$num[4],$num[5],$num[6]); 
$comp=array($num[7]); // You don't need an array to store only one number 
$arch=fopen("lottery.txt","a") or die("Internal error"); 
fputs($arch,"Lottery numbers:"); 
//fputs($arch,$_REQUEST['lott']); 
foreach ($lott as $number) 
{ 
    fputs($arch, $number); 
    fputs($arch, "\n"); 
} 
fputs($arch, "Complementary number:"); 
//fputs($arch,$_REQUEST['comp']); 
fputs($arch, $comp[0]); 
fputs($arch,"\n"); 
fputs($arch,"-------------------------------------------------------"); 
fputs($arch,"\n"); 
fclose($arch); 
echo "The dates have been stored correctly.";