How to store an array? - php

Question

I need help about an exercise. It says I have to create a little program in PHP which creates 7 random numbers (actually it's a lottery with 6 random numbers and 1 random number (complementary) between 1 and 49). That numbers have to store in an array.
The problem is I must to store that numbers in a file too. I did this:
$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];
Then I tried something like this to store that numbers:
$lott=array($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.";
Obviously it doesn't work. I'm new with php, so I don't know how to store that numbers in a file.
I appreciate the help.

Answer 1

You are trying to save $_REQUEST['lott'] and $_REQUEST['comp'] to your file. Are these variables set?
Just save your $lott and $comp variables. Both are arrays and therefor must be converted to string, before you can save it. You can use implode() for this.
$lott=array($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);
This will output
Lottery numbers:37,27,41,1,2,14
Complementary number:19
-------------------------------------------------------

Answer 2

You can use function implode to join your array data in one string:
$lott=array($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

Here is to your answer: The code is commented though---
<?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);
And here is another Variant:
<?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.";