[RESOLVED] Remove repeating values

Hi,

I am trying to display data to the screen using the following code:

PHP Code:

---

<?php

$db_host = "localhost";

$db_name = "students";

$db_user = "root";

$db_pass = "";

$table = "students";

 mysql_connect($db_host,$db_user,$db_pass);
mysql_select_db($db_name) or die("Unable to select database.");

    $data = mysql_query("SELECT * FROM $table");

$info = mysql_fetch_array($data);
while($info = mysql_fetch_array( $data )){

$comma_separated = implode(",", $info);

print $comma_separated;
}
?>

---

It works! However, I get a double up of the values like so:

Quote:

---

2 2 Mike Mike 17 17 Male Male 05/06/1990 05/06/19903 3 Joann Joann 17 17 Female Female 26/06/1982 26/06/19824 4 Rachel Rachel 14 14 Female Female 23/07/1980 23/07/19805 5 Robert Robert 13 13 Male Male 23/06/1990 23/06/19906 6 Sarah Sarah 14 14 Female Female 21/4/1990 21/4/19907 7 evan evan e e e e e e8 8 fiona fiona f f f f f f

---

I checked over my code to see what might be causing the problem but I can't find it.

Thanks,


Nightwalker

For one thing, take out:

Code:

---

$info = mysql_fetch_array($data);

---

...unless you want to skip printing the first row of results, because that's what this will cause in your code.

As for the duplicates, this is because the array returned by mysql_fetch_array (by default) has each value in the row twice - once under a numeric index, and once under the column name. Try this and you can see what I mean:

Code:

---

while($info = mysql_fetch_array( $data )){
print_r($info);
}

---

To change this, you can set a second argument in mysql_fetch_array:

Code:

---

while($info = mysql_fetch_array( $data,MYSQL_ASSOC )){

OR

while($info = mysql_fetch_array( $data,MYSQL_NUM )){

---

The first option will return an array with only column names as array keys, and the second option will return an array with only numeric indexes for your columns.

Thanks, that solved the problem.

a better way would be to just use the associative array function mysql_fetch_assoc() (though it does accomplish the same thing, it just does it in less typing and is probably easier to read).

for future reference, you can alternatively use mysql_fetch_row() to return just the numeric array; there are very, very few circumstances where using the numeric indexes would actually be practical, however.