How Generate data to alphabet on MySQL table using PHP? [closed] - php

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Hello i have tables like this :
Employee
EmployeeID EmployeeName
1234 Sooyoung
1235 Yoona
1236 Tiffany
1237 Hyoyeon
1238 Taeyeon
1239 Seohyun
1240 Sunny
1241 Yuri
i want to generate the employee id sequentially like this :
1234 as A
1235 as B
1236 as C
1237 as D
1238 as C
1239 as E
1240 as D
1241 as F
may you know what mysql code and php what i have to use? thank you

Answer 1

This is how you would do it in PHP, I am assuming this is the method you want seeing as you tagged PHP.
<?php
mysql_connect("localhost", "username", "password") or die(mysql_error());
mysql_select_db("yourdatabase") or die(mysql_error());
$employees = mysql_query("SELECT * FROM Employee ORDER BY EmployeeID")
or die(mysql_error());
$letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$position = 0;
$position2 = 0;
$toomany = '';
while($row = mysql_fetch_array( $employees )) {
echo "<DIV>" . $toomany.substr($letters, $position, 1) . " = " . $row['EmployeeName'] . " </div>";
$position ++;
if($position > 25) {
$position = 0;
$position2 ++;
if($position2 > 25) { echo "We need to rethink this idea."; break; }
$toomany = substr($letters, $position2, 1);
}
}
?>
EDITED: What if you run out of alphabets ? what did you want to happen? I took a guess, but you will have to explain more if I am not right.
EDITED: TurdPile has a simplified version of what I had. Accept his answer.

Answer 2

As stated in the comments, I don't think you can work with data directly and evaluate it to the alphabet as you are wishing (of course you can still assign results to variables).
If you must have A-Z for whatever reason, I think the best solution would be to use a PHP script to parse the results of the query. If this is the case, you won't really need the Employee ID number, as you can work with the occurrence of the results, but I left the ID number in there anyways.
<?php
// DB connection info
include("mysql_connection.php");
$query = mysql_query("SELECT EmployeeID, EmployeeName FROM Employees WHERE EmployeeID >= 1234");
$results = mysql_fetch_array($query);
$iteration = "A";
echo "ID - Name";
while(list($empNumber,$empName) = $results)){
echo $iteration." - ".$empName;
++$iteration;
}
?>
Note: mysql_query was used for the example, generally you should use MySQLi or PDO.
Note 2: The use of $iteration in this will automatically increment the letter output, when it reaches Z, it should go onto AA.