Somewhere in that mess there should be something to do a
mysqli_select_db() to choose WHICH database to use...
Where it's supposed to be in the mess of OOP layers you're wrapped
around yourself, god only knows.
On Fri, June 29, 2007 12:31 pm, Lee PHP wrote:
> Hi,
>
> I have a class that extends msyqli that AFAIK can connect to the
> database, but gives me an error when I try and query it. Here's my
> class:
>
> -- BEGIN DATABASE CLASS --
> require_once('Configuration.php');
> require_once('RSFSException.php');
>
> class Database extends mysqli {
>
> private $strUrl = "DEV";
> private $strUser;
> private $strPass;
> private $strHost;
> private $intPort;
> private $strName;
>
> private static $INSTANCE;
> private static $CONFIG;
>
> private function __construct() {
> $this->CONFIG = Configuration::getInstance();
> $this->establishConnectionSettings();
> $this->connect($this->getHost(), $this->getUser(),
> $this->getPass(), $this->getName);
>
> if (mysqli_connect_errno()) {
> throw new RSFSException("Connect exception:\n ".
> mysqli_connect_error(), -1);
> }
> }
>
> public static function getInstance($url = null) {
> // Set the URL if one is provided.
> if (isset($url)) {
> $this->setUrl($url);
> }
>
> // Instantiate the Singleton if not already instantiated.
> if(empty(self::$INSTANCE)) {
> self::$INSTANCE = new Database();
> }
>
> return self::$INSTANCE;
> }
>
> public function establishConnectionSettings() {
> // DEVELOPMENT (default) database settings.
> if ($this->getUrl() == "DEV") {
>
> $this->setUser($this->CONFIG->getProperty("rsfsTestDbUser"));
>
> $this->setPass($this->CONFIG->getProperty("rsfsTestDbPass"));
>
> $this->setHost($this->CONFIG->getProperty("rsfsTestDbHost"));
>
> $this->setPort($this->CONFIG->getProperty("rsfsTestDbPort"));
>
> $this->setName($this->CONFIG->getProperty("rsfsTestDbName"));
> }
>
> // PRODUCTION database settings.
> else if ($this->getUrl() == "PROD") {
>
> $this->setUser($this->CONFIG->getProperty("rsfsDbUser"));
>
> $this->setPass($this->CONFIG->getProperty("rsfsDbPass"));
>
> $this->setHost($this->CONFIG->getProperty("rsfsDbHost"));
>
> $this->setPort($this->CONFIG->getProperty("rsfsDbPort"));
>
> $this->setName($this->CONFIG->getProperty("rsfsDbName"));
> }
>
> else {
> // Throw an exception.
> }
> }
>
> public function query($sql) {
> $result = parent::query($sql);
>
> if(mysqli_error($this)){
> throw new RSFSException(mysqli_error($this),
> mysqli_errno($this));
> }
>
> return $result;
> }
>
> public function valueExists($table, $column, $value,
> $caseInsensitive = false) {
> if (!$caseInsensitive) {
> $sql = "SELECT * FROM $table WHERE $column = $value";
> }
>
> else {
> $sql = "SELECT * FROM $table " .
> "WHERE upper($column) = ($value)";
> }
>
> $result = $this->query($sql);
> echo "Result: $result\n";
> $count = $result->num_rows;
>
> if ($count > 0) {
> return true;
> }
>
> else {
> return false;
> }
> }
>
> public function valuesExist($table, $columns, $values) {
> // Placeholder.
> }
>
> public function procedureQuery($name, $params) {
> return $this->query("call $name($params)");
> }
>
> /** Return the URL. */
> public function getUrl() {
> return $this->strUrl;
> }
>
> .
> .
> .
>
> /** Set the database URL. */
> public function setName($url) {
> $this->strUrl = $$url;
> }
> }
>
> -- END DATABASE CLASS --
>
> To test it, I'm doing the following:
>
> -- BEGIN --
> echo "Attempting to establish connection.\n";
> $CONN = Database::getInstance();
>
> if ($CONN->ping()) {
> printf ("Our connection is ok!\n");
> } else {
> printf ("Danger, Will Robinson!!!\n");
> }
>
> echo "Attempting to test query() method.\n";
> if ($result = $CONN->query("SELECT * FROM country")) {
> echo "In result set\n";
> while( $row = mysqli_fetch_assoc($result) ){
> printf("%s (%s)\n", $row['cnt_code'], $row['cnt_name']);
> }
> }
> -- END --
>
> Which outputs the following:
>
> Attempting to establish connection.
> localhost:rsfs:rsfs:rsfs
> Our connection is ok!
> Attempting to test query() method.
>
>
> Fatal error: Uncaught RSFSException: [1046]: No database selected
>
> thrown in /home/lee/Development/rsfs/php/classes/core/Database.php
> on line 84
>
> I've tried removing the query method from my class, but even Mysqli's
> query() isn't working. Can anyone help me identify the problem?
>
> Thanks!
> Lee
>
> PS: I posted a similar question a few weeks ago - I though I had it
> working when I saw that it was connecting. Now that I'm ready to
> actually use it, I see that it just can't query...
>
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>
>
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