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To Loop or not to Loop?


dtyson2000
Go to solution Solved by QuickOldCar,

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Hello. I have a simple SQL query that returns a list of names, this is good and all is right with the world. I would like to associate a number with each person, a RANDOM number that will change each time I call the page. Desired result:

 

Number      |      Name

18               |      Jeff

2                 |      Tammy

12               |      Steve

10               |      Phil

5                 |      Michelle

 

etc. etc.

 

Pool of numbers will be from 1 to 30. Sometimes the names pool will result in 18 rows or 27 rows or any number in between. I just need to assign a number from 1 to 30 to each name that is not the same each time. Here's my loop.

while ($row= mysql_fetch_array($result)) {
	$lastname = $row["lastname"];
	$firstname = $row["firstname"];

	$numbers = range(1, 30);
	shuffle($numbers);
	foreach ($numbers as $number) {
	}

echo "<tr>
		<td class='results'>$number</td>
		<td class='results'>$firstname $lastname</td>
	</tr>";
}

Here's the problem I'm encountering:

 

1) If I leave the FOREACH inside the loop, I wind up with one or two repeated $number(s).

2) If I take the FOREACH outside the loop, I wind up with the first integer from the $numbers range repeated as many times as there are names

 

I'm just not sure how to achieve a unique designation for each name.

 

Could someone point me in the right direction? Thanks so much!

 

 

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all the foreach() loop is doing is giving you the last element in the array.

 

to eliminate duplicates, you need to remove each number from the array as you use them. array_pop() would be a good choice to both get the last element from the array and remove it at the same time. you would put your range() and shuffle() statements before the start of your while(){} loop.

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  • Solution

As mac_gyver stated, but a different approach.

$numbers = range(1, 30);
shuffle($numbers);
$i = 0;
while ($row= mysql_fetch_array($result)) {
$lastname = $row["lastname"];
$firstname = $row["firstname"];

echo "<tr>
  <td class='results'>$numbers[$i]</td>
  <td class='results'>$firstname $lastname</td>
</tr>";
$i++;
}
Edited by QuickOldCar
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That's the ticket. I swear I tried something similar but messed something up. I think it was the [$i] in the echo. I think I recall doing it but just putting , which threw an error of course. Then I became so "cornfused" that I tried 17 different things before asking. Thank you so much for your time and for enlightening me!

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