[PHP] Randomizing 3 different numbers.
I am tring to output 3 different random numbers between 1 and 20 into 3 different strings. Using Rand() for each string isn't sufficient as I may get the same number repeated for one of the other strings- eg 1,1,3 or 5,3,3 . It's important that I get three different numbers outputted into for example $one, $two, $three. Can anyone help? Ian = - Ian A. Gray Manchester, UK Telephone: +44 (0) 161 224 1635 - Fax: +44 (0) 870 135 0061 - Mobile: +44 (0) 7900 996 328 Business Enquiries: +44(0)870 770 8832 E-mail: [EMAIL PROTECTED]: www.baritone.uk.com (Performance) www.vocalstudio.co.uk (Vocal Tuition)www.selectperformers.com (Web design for professional musicians) - -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Randomizing 3 different numbers.
Before you add a number to a string make sure that the number is not in
any of the other ones if they exist.
Use a do-while loop on it...
$one = rand( 1,20 );
do {
$two = rand( 1, 20 );
}while( $two == $one );
do {
$three = rand( 1, 20 );
}while( ($three == $one) ($three == $two) );
echo One: $one\n;
echo Two: $two\n;
echo Three: $three\n;
HTH
--
Ray
On Mon, 2003-10-27 at 05:26, Ian Gray wrote:
I am tring to output 3 different random numbers between 1
and 20 into 3 different strings. Using Rand() for each
string isn't sufficient as I may get the same number
repeated for one of the other strings- eg 1,1,3 or 5,3,3 .
It's important that I get three different numbers outputted
into for example $one, $two, $three.
Can anyone help?
Ian
=
-
Ian A. Gray
Manchester, UK
Telephone: +44 (0) 161 224 1635 - Fax: +44 (0) 870 135 0061 - Mobile: +44 (0) 7900
996 328
Business Enquiries: +44(0)870 770 8832
E-mail: [EMAIL PROTECTED]: www.baritone.uk.com (Performance) www.vocalstudio.co.uk
(Vocal Tuition)www.selectperformers.com (Web design for professional musicians)
-
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PHP General Mailing List (http://www.php.net/)
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RE: [PHP] Randomizing 3 different numbers.
Sorry for top-posting, gotta configure my mail client better later.
Small error here:
}while( ($three == $one) ($three == $two) );
Change to:
}while( ($three == $one) || ($three == $two) );
-Original Message-
From: Ray Hunter [mailto:[EMAIL PROTECTED]
Sent: den 27 oktober 2003 15:56
To: [EMAIL PROTECTED]
Subject: Re: [PHP] Randomizing 3 different numbers.
Before you add a number to a string make sure that the number is not in
any of the other ones if they exist.
Use a do-while loop on it...
$one = rand( 1,20 );
do {
$two = rand( 1, 20 );
}while( $two == $one );
do {
$three = rand( 1, 20 );
}while( ($three == $one) ($three == $two) );
echo One: $one\n;
echo Two: $two\n;
echo Three: $three\n;
HTH
--
Ray
On Mon, 2003-10-27 at 05:26, Ian Gray wrote:
I am tring to output 3 different random numbers between 1
and 20 into 3 different strings. Using Rand() for each
string isn't sufficient as I may get the same number
repeated for one of the other strings- eg 1,1,3 or 5,3,3 .
It's important that I get three different numbers outputted
into for example $one, $two, $three.
Can anyone help?
Ian
=
-
Ian A. Gray
Manchester, UK
Telephone: +44 (0) 161 224 1635 - Fax: +44 (0) 870 135 0061 - Mobile:
+44 (0) 7900 996 328
Business Enquiries: +44(0)870 770 8832
E-mail: [EMAIL PROTECTED]: www.baritone.uk.com
(Performance) www.vocalstudio.co.uk (Vocal
Tuition)www.selectperformers.com (Web design for professional
musicians)
-
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PHP General Mailing List (http://www.php.net/)
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Re: [PHP] Randomizing 3 different numbers.
Dont you mean || at the last loop? You loop as long as 3 is equal to both 1
and 2, || would cause it to loop while it's equal to any of them..
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Before you add a number to a string make sure that the number is not in
any of the other ones if they exist.
Use a do-while loop on it...
$one = rand( 1,20 );
do {
$two = rand( 1, 20 );
}while( $two == $one );
do {
$three = rand( 1, 20 );
}while( ($three == $one) ($three == $two) );
echo One: $one\n;
echo Two: $two\n;
echo Three: $three\n;
HTH
--
Ray
On Mon, 2003-10-27 at 05:26, Ian Gray wrote:
I am tring to output 3 different random numbers between 1
and 20 into 3 different strings. Using Rand() for each
string isn't sufficient as I may get the same number
repeated for one of the other strings- eg 1,1,3 or 5,3,3 .
It's important that I get three different numbers outputted
into for example $one, $two, $three.
Can anyone help?
Ian
=
-
Ian A. Gray
Manchester, UK
Telephone: +44 (0) 161 224 1635 - Fax: +44 (0) 870 135 0061 - Mobile:
+44 (0) 7900 996 328
Business Enquiries: +44(0)870 770 8832
E-mail: [EMAIL PROTECTED]: www.baritone.uk.com
(Performance) www.vocalstudio.co.uk (Vocal
Tuition)www.selectperformers.com (Web design for professional musicians)
-
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PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Randomizing 3 different numbers.
Just to give you something to chew on, try the code below.
?php
$myResultsArray = array();
$numberOfRandNumbersToGet = 3;
$randomNumberRange= 20;
while(count($myResultsArray) $numberOfRandNumbersToGet)
{
do {
$rand = rand(1, $randomNumberRange);
}while(in_array($rand, $myResultsArray));
$myResultsArray[] = $rand;
}
print_r($myResultsArray);
// If you really want $one, $two, $three for exactly three results:
list($one, $two, $three) = $myResultsArray;
echo 1: $one\n2: $two\n3: $three\n;
?
It is slightly more generic, and you can change things a little
without having to modify a whole bunch of if() statements.
-Original Message-
From: Ian Gray [mailto:[EMAIL PROTECTED]
Sent: 27 October 2003 12:26
To: [EMAIL PROTECTED]
Subject: [PHP] Randomizing 3 different numbers.
I am tring to output 3 different random numbers between 1
and 20 into 3 different strings. Using Rand() for each
string isn't sufficient as I may get the same number
repeated for one of the other strings- eg 1,1,3 or 5,3,3 .
It's important that I get three different numbers outputted
into for example $one, $two, $three.
Can anyone help?
Ian
=
-
Ian A. Gray
Manchester, UK
Telephone: +44 (0) 161 224 1635 - Fax: +44 (0) 870 135 0061 - Mobile:
+44 (0) 7900 996 328
Business Enquiries: +44(0)870 770 8832
E-mail: [EMAIL PROTECTED]: www.baritone.uk.com
(Performance) www.vocalstudio.co.uk (Vocal
Tuition)www.selectperformers.com (Web design for professional
musicians)
-
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