Programming PHP

For example, this fetches the names of all the Bond movies in the database, ordered
by the year they were released:
$titles = $db->getAll("SELECT title FROM movies ORDER BY year ASC");
foreach ($titles as $title) {
echo "$title\n";
}
Dr No
From Russia With Love
Goldfinger
...
The getAll( ) method returns an array of all the rows returned by the query:
$all = $db->getAll(SQL [, values [, fetchmode ]]);
For example, the following code builds a select box containing the names of the
movies. The ID of the selected movie is submitted as the parameter value.
$results = $db->getAll("SELECT id,title FROM movies ORDER BY year ASC");
echo "\n";
foreach ($results as $result) {
echo "{$result[1]}\n";
}
echo "";
All the get*( ) methods return DB_ERROR when an error occurs.
Details About a Query Response
Four PEAR DB methods provide you with information on a query result object:
numRows( ), numCols( ), affectedRows( ), and tableInfo( ).
The numRows( ) and numCols( ) methods tell you the number of rows and columns
returned from a SELECT query:
$howmany = $response->numRows( );
$howmany = $response->numCols( );
The affectedRows( ) method tells you the number of rows affected by an INSERT,
DELETE, or UPDATE operation:
$howmany = $response->affectedRows( );
The tableInfo( ) method returns detailed information on the type and flags of fields
returned from a SELECT operation:
$info = $response->tableInfo( );
The following code dumps the table information into an HTML table:
$info = $response->tableInfo( );
a_to_table($info);
function a_to_table ($a) {
echo "\n";
foreach ($a as $k => $v) {
200 | Chapter 8: Databases
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