📄 common.php
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*
* @param string $query the query
* @param intr $from the row to start to fetching (0 = the first row)
* @param int $count the numbers of rows to fetch
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
*
* @return mixed a new DB_result object for successful SELECT queries
* or DB_OK for successul data manipulation queries.
* A DB_Error object on failure.
*/
function &limitQuery($query, $from, $count, $params = array())
{
$query = $this->modifyLimitQuery($query, $from, $count, $params);
if (DB::isError($query)){
return $query;
}
$result =& $this->query($query, $params);
if (is_a($result, 'DB_result')) {
$result->setOption('limit_from', $from);
$result->setOption('limit_count', $count);
}
return $result;
}
// }}}
// {{{ getOne()
/**
* Fetches the first column of the first row from a query result
*
* Takes care of doing the query and freeing the results when finished.
*
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
*
* @return mixed the returned value of the query.
* A DB_Error object on failure.
*/
function &getOne($query, $params = array())
{
$params = (array)$params;
// modifyLimitQuery() would be nice here, but it causes BC issues
if (sizeof($params) > 0) {
$sth = $this->prepare($query);
if (DB::isError($sth)) {
return $sth;
}
$res =& $this->execute($sth, $params);
$this->freePrepared($sth);
} else {
$res =& $this->query($query);
}
if (DB::isError($res)) {
return $res;
}
$err = $res->fetchInto($row, DB_FETCHMODE_ORDERED);
$res->free();
if ($err !== DB_OK) {
return $err;
}
return $row[0];
}
// }}}
// {{{ getRow()
/**
* Fetches the first row of data returned from a query result
*
* Takes care of doing the query and freeing the results when finished.
*
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @param int $fetchmode the fetch mode to use
*
* @return array the first row of results as an array.
* A DB_Error object on failure.
*/
function &getRow($query, $params = array(),
$fetchmode = DB_FETCHMODE_DEFAULT)
{
// compat check, the params and fetchmode parameters used to
// have the opposite order
if (!is_array($params)) {
if (is_array($fetchmode)) {
if ($params === null) {
$tmp = DB_FETCHMODE_DEFAULT;
} else {
$tmp = $params;
}
$params = $fetchmode;
$fetchmode = $tmp;
} elseif ($params !== null) {
$fetchmode = $params;
$params = array();
}
}
// modifyLimitQuery() would be nice here, but it causes BC issues
if (sizeof($params) > 0) {
$sth = $this->prepare($query);
if (DB::isError($sth)) {
return $sth;
}
$res =& $this->execute($sth, $params);
$this->freePrepared($sth);
} else {
$res =& $this->query($query);
}
if (DB::isError($res)) {
return $res;
}
$err = $res->fetchInto($row, $fetchmode);
$res->free();
if ($err !== DB_OK) {
return $err;
}
return $row;
}
// }}}
// {{{ getCol()
/**
* Fetches a single column from a query result and returns it as an
* indexed array
*
* @param string $query the SQL query
* @param mixed $col which column to return (integer [column number,
* starting at 0] or string [column name])
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
*
* @return array the results as an array. A DB_Error object on failure.
*
* @see DB_common::query()
*/
function &getCol($query, $col = 0, $params = array())
{
$params = (array)$params;
if (sizeof($params) > 0) {
$sth = $this->prepare($query);
if (DB::isError($sth)) {
return $sth;
}
$res =& $this->execute($sth, $params);
$this->freePrepared($sth);
} else {
$res =& $this->query($query);
}
if (DB::isError($res)) {
return $res;
}
$fetchmode = is_int($col) ? DB_FETCHMODE_ORDERED : DB_FETCHMODE_ASSOC;
if (!is_array($row = $res->fetchRow($fetchmode))) {
$ret = array();
} else {
if (!array_key_exists($col, $row)) {
$ret =& $this->raiseError(DB_ERROR_NOSUCHFIELD);
} else {
$ret = array($row[$col]);
while (is_array($row = $res->fetchRow($fetchmode))) {
$ret[] = $row[$col];
}
}
}
$res->free();
if (DB::isError($row)) {
$ret = $row;
}
return $ret;
}
// }}}
// {{{ getAssoc()
/**
* Fetches an entire query result and returns it as an
* associative array using the first column as the key
*
* If the result set contains more than two columns, the value
* will be an array of the values from column 2-n. If the result
* set contains only two columns, the returned value will be a
* scalar with the value of the second column (unless forced to an
* array with the $force_array parameter). A DB error code is
* returned on errors. If the result set contains fewer than two
* columns, a DB_ERROR_TRUNCATED error is returned.
*
* For example, if the table "mytable" contains:
*
* <pre>
* ID TEXT DATE
* --------------------------------
* 1 'one' 944679408
* 2 'two' 944679408
* 3 'three' 944679408
* </pre>
*
* Then the call getAssoc('SELECT id,text FROM mytable') returns:
* <pre>
* array(
* '1' => 'one',
* '2' => 'two',
* '3' => 'three',
* )
* </pre>
*
* ...while the call getAssoc('SELECT id,text,date FROM mytable') returns:
* <pre>
* array(
* '1' => array('one', '944679408'),
* '2' => array('two', '944679408'),
* '3' => array('three', '944679408')
* )
* </pre>
*
* If the more than one row occurs with the same value in the
* first column, the last row overwrites all previous ones by
* default. Use the $group parameter if you don't want to
* overwrite like this. Example:
*
* <pre>
* getAssoc('SELECT category,id,name FROM mytable', false, null,
* DB_FETCHMODE_ASSOC, true) returns:
*
* array(
* '1' => array(array('id' => '4', 'name' => 'number four'),
* array('id' => '6', 'name' => 'number six')
* ),
* '9' => array(array('id' => '4', 'name' => 'number four'),
* array('id' => '6', 'name' => 'number six')
* )
* )
* </pre>
*
* Keep in mind that database functions in PHP usually return string
* values for results regardless of the database's internal type.
*
* @param string $query the SQL query
* @param bool $force_array used only when the query returns
* exactly two columns. If true, the values
* of the returned array will be one-element
* arrays instead of scalars.
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of
* items passed must match quantity of
* placeholders in query: meaning 1
* placeholder for non-array parameters or
* 1 placeholder per array element.
* @param int $fetchmode the fetch mode to use
* @param bool $group if true, the values of the returned array
* is wrapped in another array. If the same
* key value (in the first column) repeats
* itself, the values will be appended to
* this array instead of overwriting the
* existing values.
*
* @return array the associative array containing the query results.
* A DB_Error object on failure.
*/
function &getAssoc($query, $force_array = false, $params = array(),
$fetchmode = DB_FETCHMODE_DEFAULT, $group = false)
{
$params = (array)$params;
if (sizeof($params) > 0) {
$sth = $this->prepare($query);
if (DB::isError($sth)) {
return $sth;
}
$res =& $this->execute($sth, $params);
$this->freePrepared($sth);
} else {
$res =& $this->query($query);
}
if (DB::isError($res)) {
return $res;
}
if ($fetchmode == DB_FETCHMODE_DEFAULT) {
$fetchmode = $this->fetchmode;
}
$cols = $res->numCols();
if ($cols < 2) {
$tmp =& $this->raiseError(DB_ERROR_TRUNCATED);
return $tmp;
}
$results = array();
if ($cols > 2 || $force_array) {
// return array values
// XXX this part can be optimized
if ($fetchmode == DB_FETCHMODE_ASSOC) {
while (is_array($row = $res->fetchRow(DB_FETCHMODE_ASSOC))) {
reset($row);
$key = current($row);
unset($row[key($row)]);
if ($group) {
$results[$key][] = $row;
} else {
$results[$key] = $row;
}
}
} elseif ($fetchmode == DB_FETCHMODE_OBJECT) {
while ($row = $res->fetchRow(DB_FETCHMODE_OBJECT)) {
$arr = get_object_vars($row);
$key = current($arr);
if ($group) {
$results[$key][] = $row;
} else {
$results[$key] = $row;
}
}
} else {
while (is_array($row = $res->fetchRow(DB_FETCHMODE_ORDERED))) {
// we shift away the first element to get
// indices running from 0 again
$key = array_shift($row);
if ($group) {
$results[$key][] = $row;
} else {
$results[$key] = $row;
}
}
}
if (DB::isError($row)) {
$results = $row;
}
} else {
// return scalar values
while (is_array($row = $res->fetchRow(DB_FETCHMODE_ORDERED))) {
if ($group) {
$results[$row[0]][] = $row[1];
} else {
$results[$row[0]] = $row[1];
}
}
if (DB::isError($row)) {
$results = $row;
}
}
$res->free();
return $results;
}
// }}}
// {{{ getAll()
/**
* Fetches all of the rows from a query result
*
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of
* items passed must match quantity of
* placeholders in query: meaning 1
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