Database connection
| public db_connect ( boolean $persistent = FALSE ) : object | ||
| $persistent | boolean | |
| return | object | |
/**
* Non-persistent database connection
*
* @param bool
* @return object
*/
public function db_connect($persistent = FALSE)
{
/* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
* on connect - it was ignored. This is a work-around for the issue.
*
* Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
*/
if (!is_php('5.3.6') && !empty($this->char_set)) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES ' . $this->char_set . (empty($this->dbcollat) ? '' : ' COLLATE ' . $this->dbcollat);
}
return parent::db_connect($persistent);
}
/**
* Non-persistent database connection
*
* @param bool
* @return object
*/
public function db_connect($persistent = FALSE)
{
$this->conn_id = parent::db_connect($persistent);
if (!is_object($this->conn_id)) {
return $this->conn_id;
}
// Determine how identifiers are escaped
$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
$query = $query->row_array();
$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
$this->_escape_char = $this->_quoted_identifier ? '"' : array('[', ']');
return $this->conn_id;
}
/**
* Database connection
*
* @param bool $persistent
* @return object
*/
public function db_connect($persistent = FALSE)
{
$this->conn_id = parent::db_connect($persistent);
if (is_object($this->conn_id) && !empty($this->schema)) {
$this->simple_query('SET search_path TO ' . $this->schema . ',public');
}
return $this->conn_id;
}
/**
* Non-persistent database connection
*
* @param bool
* @return object
*/
public function db_connect($persistent = FALSE)
{
if (!empty($this->char_set) && preg_match('/utf[^8]*8/i', $this->char_set)) {
$this->options[PDO::SQLSRV_ENCODING_UTF8] = 1;
}
$this->conn_id = parent::db_connect($persistent);
if (!is_object($this->conn_id) or is_bool($this->_quoted_identifier)) {
return $this->conn_id;
}
// Determine how identifiers are escaped
$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
$query = $query->row_array();
$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
$this->_escape_char = $this->_quoted_identifier ? '"' : array('[', ']');
return $this->conn_id;
}
/**
* Database connection
*
* @param bool $persistent
* @return object
*/
public function db_connect($persistent = FALSE)
{
/* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
* on connect - it was ignored. This is a work-around for the issue.
*
* Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
*/
if (!is_php('5.3.6') && !empty($this->char_set)) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES ' . $this->char_set . (empty($this->dbcollat) ? '' : ' COLLATE ' . $this->dbcollat);
}
if ($this->stricton) {
if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND])) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode="STRICT_ALL_TABLES"';
} else {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = "STRICT_ALL_TABLES"';
}
}
if ($this->compress === TRUE) {
$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
}
// SSL support was added to PDO_MYSQL in PHP 5.3.7
if (is_array($this->encrypt) && is_php('5.3.7')) {
$ssl = array();
empty($this->encrypt['ssl_key']) or $ssl[PDO::MYSQL_ATTR_SSL_KEY] = $this->encrypt['ssl_key'];
empty($this->encrypt['ssl_cert']) or $ssl[PDO::MYSQL_ATTR_SSL_CERT] = $this->encrypt['ssl_cert'];
empty($this->encrypt['ssl_ca']) or $ssl[PDO::MYSQL_ATTR_SSL_CA] = $this->encrypt['ssl_ca'];
empty($this->encrypt['ssl_capath']) or $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath'];
empty($this->encrypt['ssl_cipher']) or $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher'];
// DO NOT use array_merge() here!
// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
empty($ssl) or $this->options += $ssl;
}
// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
if (($pdo = parent::db_connect($persistent)) !== FALSE && !empty($ssl) && version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=') && empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value)) {
$message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!';
log_message('error', $message);
return $this->db->db_debug ? $this->db->display_error($message, '', TRUE) : FALSE;
}
return $pdo;
}
/**
* Database connection.
*
* @param bool $persistent
*
* @return object
*/
public function db_connect($persistent = false)
{
if ($persistent === true) {
log_message('debug', "dblib driver doesn't support persistent connections");
}
$this->conn_id = parent::db_connect(false);
if (!is_object($this->conn_id)) {
return $this->conn_id;
}
// Determine how identifiers are escaped
$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
$query = $query->row_array();
$this->_quoted_identifier = empty($query) ? false : (bool) $query['qi'];
$this->_escape_char = $this->_quoted_identifier ? '"' : ['[', ']'];
return $this->conn_id;
}
/**
* Database connection
*
* @param bool $persistent
* @return object
* @todo SSL support
*/
public function db_connect($persistent = FALSE)
{
/* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
* on connect - it was ignored. This is a work-around for the issue.
*
* Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
*/
if (!is_php('5.3.6') && !empty($this->char_set)) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES ' . $this->char_set . (empty($this->dbcollat) ? '' : ' COLLATE ' . $this->dbcollat);
}
if ($this->stricton) {
if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND])) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode="STRICT_ALL_TABLES"';
} else {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = "STRICT_ALL_TABLES"';
}
}
if ($this->compress === TRUE) {
$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
}
return parent::db_connect($persistent);
}
/**
* Database connection
*
* @param bool $persistent
* @return object
*/
public function db_connect($persistent = FALSE)
{
if (isset($this->stricton)) {
if ($this->stricton) {
$sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")';
} else {
$sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
@@sql_mode,
"STRICT_ALL_TABLES,", ""),
",STRICT_ALL_TABLES", ""),
"STRICT_ALL_TABLES", ""),
"STRICT_TRANS_TABLES,", ""),
",STRICT_TRANS_TABLES", ""),
"STRICT_TRANS_TABLES", "")';
}
if (!empty($sql)) {
if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND])) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = ' . $sql;
} else {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = ' . $sql;
}
}
}
return parent::db_connect($persistent);
}
/**
* Database connection
*
* @param bool $persistent
* @return object
*/
public function db_connect($persistent = FALSE)
{
if (isset($this->stricton)) {
if ($this->stricton) {
$sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")';
} else {
$sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
@@sql_mode,
"STRICT_ALL_TABLES,", ""),
",STRICT_ALL_TABLES", ""),
"STRICT_ALL_TABLES", ""),
"STRICT_TRANS_TABLES,", ""),
",STRICT_TRANS_TABLES", ""),
"STRICT_TRANS_TABLES", "")';
}
if (!empty($sql)) {
if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND])) {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = ' . $sql;
} else {
$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = ' . $sql;
}
}
}
if ($this->compress === TRUE) {
$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
}
if (is_array($this->encrypt)) {
$ssl = array();
empty($this->encrypt['ssl_key']) or $ssl[PDO::MYSQL_ATTR_SSL_KEY] = $this->encrypt['ssl_key'];
empty($this->encrypt['ssl_cert']) or $ssl[PDO::MYSQL_ATTR_SSL_CERT] = $this->encrypt['ssl_cert'];
empty($this->encrypt['ssl_ca']) or $ssl[PDO::MYSQL_ATTR_SSL_CA] = $this->encrypt['ssl_ca'];
empty($this->encrypt['ssl_capath']) or $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath'];
empty($this->encrypt['ssl_cipher']) or $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher'];
// DO NOT use array_merge() here!
// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
empty($ssl) or $this->options += $ssl;
}
// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
if (($pdo = parent::db_connect($persistent)) !== FALSE && !empty($ssl) && version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=') && empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value)) {
$message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!';
log_message('error', $message);
return $this->db->db_debug ? $this->db->display_error($message, '', TRUE) : FALSE;
}
return $pdo;
}
