Re: help with print value

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You're talking about a table in a database, correct? Assuming the database is MySQL, you would:
1. open a connection to the database
2. execute a SQL select statement to fetch the data
3. process the results, formatting them into HTML.

There are a number of tutorials on doing this, but it's only a few lines of code:

1. Connect to the database:

require( "dbname.inc" ); //stores your hostname, username and password outside the script. $db = mysql_pconnect("$host", "$user", "$pass") or die("Unable to connect to server");

2. Create your query, usually done by first assigning it to a variable. That way, if you are not getting the results you want it's easy to echo the SQL to the screen:

$sql = "SELECT month, day, value from sometable order by month, day"; // use your own field names in place of month, etc.
 $result = mysql_query($sql); // executes the SQL statement
 //echo $result . &nbsp;&nbsp; . mysql_num_rows( $result) . "<br>";

3. test for and process the results. Here we assume a table displayed in the user's browser.

if( $result && mysql_num_rows( $result) ){ //test that you have a result AND that number of rows is > 0. Remember the convention that 0 is false.
   while ($myrow = mysql_fetch_array($result)) {
      //assuming you have issued a <table> somewhere above ...
echo "<tr> <td>" . $myrow['month'] . "</td>"; // the "." (dot) concatenates in PHP echo "<td> . $myrow['day'] . "</td>"; // or should we say "joins strings and variables" echo "<td> . $myrow['value'] . "</td> </tr>"; // and of course, close the row
   }
}

That's rudimentary. There is no WHERE condition on the SELECT which you would use if you wanted a particular month or year.

Hope this has been helpful. Check out the various tutorials; there are probably some written in Spanish. Go to:
http://www.php.net/links.php
and scroll down to Spanish, there are four links there.

Hope this has been helpful - Miles Thompson


At 02:38 PM 7/30/2005, Jesús Alain Rodríguez Santos wrote:
Sorry for my english, i'm cuban, it's dificult for me explain that in
english but I'll try:

 I have a table columns: month, day  and value

||month||day||value
    7     1    56
    7     3    34
    8     4    50
    9     5    78
    .     .     .
    .     .     .
etc...

I need to get the value for every day, for example:
for day 1 the value is 56
for day 3 the value is 67
for day 4 the value is 50

did you understain, please helpe me



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