Question

I want to “automatically” load ALL my database data into $db[] and/or $_SESSION['db']. Thus, I just have to load this code once, instead of loading bits and pieces throughout the website.

I was able to query the meta data and raw data, my problem is creating the array.

Let’s say I have a table temp with columns name and age I want to be able to do something like this: echo $db['temp']['name'] . "'s age is: " . $db['temp']['age']; -Obviously I have lots of tables with lots of columns. This is just an example

<?php
$dbn = "db_name";
$dbu = "db_user";
$dbp = "db_password";
$hst = 'db_host';

$dbc = mysql_connect($hst,$dbu,$dbp);


$sql_metadata = 
"SELECT `COLUMNS`.`TABLE_NAME` as 'table' , `COLUMNS`.`COLUMN_NAME` as 'column'
FROM `information_schema`.COLUMNS
WHERE `COLUMNS`.`TABLE_SCHEMA` = '$dbn'
ORDER BY TABLE_NAME ASC , `COLUMNS`.`COLUMN_NAME` ASC";

$dbq = mysql_query($sql_metadata, $dbc);
while( $meta = mysql_fetch_array($dbq) )
{
    $sql_rawdata = "SELECT `$meta['column']` FROM `$dbn`.`$meta['table']`";
    $dbq2 = mysql_query($sql_rawdata);
    foreach( ($raw = mysql_fetch_array($dbq2)) as $value) )
    {
        $db = array
                ( 
                $meta['table'] => array( $meta['column'] => $value)
                );
    }
}
print_r($db);
?>

Answer 1

Declare your array before going into the loop and then fill it:

$db = array();

$sql_metadata = 
"SELECT DISTINCT `COLUMNS`.`TABLE_NAME` as 'table' 
FROM `information_schema`.COLUMNS 
WHERE `COLUMNS`.`TABLE_SCHEMA` = '$dbn'";

$dbq = mysql_query($sql_metadata, $dbc);
while( $meta = mysql_fetch_array($dbq) )
{
    $sql_rawdata = "SELECT `$meta['column']` FROM `$dbn`.`$meta['table']`";
    $dbq2 = mysql_query($sql_rawdata);
    $raw = mysql_fetch_array($dbq2);

    foreach($raw as $value )
    {
        $db[$meta['table']][$meta['column']][] = $value;
    }
}
print_r($db);

For explanation: You create a multi-dimensional array with the table name pointing towards the column names. the [] at the end of the array tells PHP to store the content of $value into a new array element of table=>column.

THis would be an easier way to fetch the whole data:

    $sql_rawdata = "SELECT * FROM `".$dbn."`.`".$meta['table']."`";
    $dbq2 = mysql_query($sql_rawdata);

    while($raw = mysql_fetch_assoc($dbq2)){
        foreach($raw as $column => $value )
        {
            $db[$meta['table']][$column][] = $value;
        }
    }