The Pdo\Mysql class

(PHP 8 >= 8.4.0)

Introduzione

A PDO subclass representing a connection using the MySQL PDO driver.

This driver supports a dedicated SQL query parser for the MySQL dialect. It can handle the following:

Single and double-quoted literals with both doubling and backslash as escaping mechanisms
Backtick literals with doubling as escaping mechanism
Two-dashes, C-style comments, and Hash-comments.

Sommario della classe

class Pdo\Mysql extends PDO {

/* Costanti ereditate */

public const int PDO::PARAM_NULL;

public const int PDO::PARAM_BOOL = 5;

public const int PDO::PARAM_INT = 1;

public const int PDO::PARAM_STR = 2;

public const int PDO::PARAM_LOB = 3;

public const int PDO::PARAM_STMT = 4;

public const int PDO::PARAM_INPUT_OUTPUT;

public const int PDO::PARAM_STR_NATL;

public const int PDO::PARAM_STR_CHAR;

public const int PDO::PARAM_EVT_ALLOC;

public const int PDO::PARAM_EVT_FREE;

public const int PDO::PARAM_EVT_EXEC_PRE;

public const int PDO::PARAM_EVT_EXEC_POST;

public const int PDO::PARAM_EVT_FETCH_PRE;

public const int PDO::PARAM_EVT_FETCH_POST;

public const int PDO::PARAM_EVT_NORMALIZE;

public const int PDO::FETCH_DEFAULT;

public const int PDO::FETCH_LAZY;

public const int PDO::FETCH_ASSOC;

public const int PDO::FETCH_NUM;

public const int PDO::FETCH_BOTH;

public const int PDO::FETCH_OBJ;

public const int PDO::FETCH_BOUND;

public const int PDO::FETCH_COLUMN;

public const int PDO::FETCH_CLASS;

public const int PDO::FETCH_INTO;

public const int PDO::FETCH_FUNC;

public const int PDO::FETCH_GROUP;

public const int PDO::FETCH_UNIQUE;

public const int PDO::FETCH_KEY_PAIR;

public const int PDO::FETCH_CLASSTYPE;

public const int PDO::FETCH_SERIALIZE;

public const int PDO::FETCH_PROPS_LATE;

public const int PDO::FETCH_NAMED;

public const int PDO::ATTR_AUTOCOMMIT;

public const int PDO::ATTR_PREFETCH;

public const int PDO::ATTR_TIMEOUT;

public const int PDO::ATTR_ERRMODE;

public const int PDO::ATTR_SERVER_VERSION;

public const int PDO::ATTR_CLIENT_VERSION;

public const int PDO::ATTR_SERVER_INFO;

public const int PDO::ATTR_CONNECTION_STATUS;

public const int PDO::ATTR_CASE;

public const int PDO::ATTR_CURSOR_NAME;

public const int PDO::ATTR_CURSOR;

public const int PDO::ATTR_ORACLE_NULLS;

public const int PDO::ATTR_PERSISTENT;

public const int PDO::ATTR_STATEMENT_CLASS;

public const int PDO::ATTR_FETCH_TABLE_NAMES;

public const int PDO::ATTR_FETCH_CATALOG_NAMES;

public const int PDO::ATTR_DRIVER_NAME;

public const int PDO::ATTR_STRINGIFY_FETCHES;

public const int PDO::ATTR_MAX_COLUMN_LEN;

public const int PDO::ATTR_EMULATE_PREPARES;

public const int PDO::ATTR_DEFAULT_FETCH_MODE;

public const int PDO::ATTR_DEFAULT_STR_PARAM;

public const int PDO::ERRMODE_SILENT;

public const int PDO::ERRMODE_WARNING;

public const int PDO::ERRMODE_EXCEPTION;

public const int PDO::CASE_NATURAL;

public const int PDO::CASE_LOWER;

public const int PDO::CASE_UPPER;

public const int PDO::NULL_NATURAL;

public const int PDO::NULL_EMPTY_STRING;

public const int PDO::NULL_TO_STRING;

public const string PDO::ERR_NONE;

public const int PDO::FETCH_ORI_NEXT;

public const int PDO::FETCH_ORI_PRIOR;

public const int PDO::FETCH_ORI_FIRST;

public const int PDO::FETCH_ORI_LAST;

public const int PDO::FETCH_ORI_ABS;

public const int PDO::FETCH_ORI_REL;

public const int PDO::CURSOR_FWDONLY;

public const int PDO::CURSOR_SCROLL;

/* Costanti */

public const int ATTR_USE_BUFFERED_QUERY;

public const int ATTR_LOCAL_INFILE;

public const int ATTR_LOCAL_INFILE_DIRECTORY;

public const int ATTR_INIT_COMMAND;

public const int ATTR_MAX_BUFFER_SIZE;

public const int ATTR_READ_DEFAULT_FILE;

public const int ATTR_READ_DEFAULT_GROUP;

public const int ATTR_COMPRESS;

public const int ATTR_DIRECT_QUERY;

public const int ATTR_FOUND_ROWS;

public const int ATTR_IGNORE_SPACE;

public const int ATTR_MULTI_STATEMENTS;

public const int ATTR_SERVER_PUBLIC_KEY;

public const int ATTR_SSL_KEY;

public const int ATTR_SSL_CERT;

public const int ATTR_SSL_CA;

public const int ATTR_SSL_CAPATH;

public const int ATTR_SSL_CIPHER;

public const int ATTR_SSL_VERIFY_SERVER_CERT;

/* Metodi */

public function getWarningCount(): int

/* Metodi ereditati */

public function PDO::__construct(
    string $dsn,
    ?string $username = null,
    #[\SensitiveParameter]?string $password = null,
    ?array $options = null
)

public function PDO::beginTransaction(): bool

public function PDO::commit(): bool

public static function PDO::connect(
    string $dsn,
    ?string $username = null,
    #[\SensitiveParameter]?string $password = null,
    ?array $options = null
): static

public function PDO::errorCode(): ?string

public function PDO::errorInfo(): array

public function PDO::exec(string $statement): int|false

public function PDO::getAttribute(int $attribute): mixed

public static function PDO::getAvailableDrivers(): array

public function PDO::inTransaction(): bool

public function PDO::lastInsertId(?string $name = null): string|false

public function PDO::prepare(string $query, array $options = []): PDOStatement|false

public function PDO::query(string $query, ?int $fetchMode = null): PDOStatement|false

public function PDO::query(string $query, ?int $fetchMode = PDO::FETCH_COLUMN, int $colno): PDOStatement|false

public function PDO::query(
    string $query,
    ?int $fetchMode = PDO::FETCH_CLASS,
    string $classname,
    array $constructorArgs
): PDOStatement|false

public function PDO::query(string $query, ?int $fetchMode = PDO::FETCH_INTO, object $object): PDOStatement|false

public function PDO::quote(string $string, int $type = PDO::PARAM_STR): string|false

public function PDO::rollBack(): bool

public function PDO::setAttribute(int $attribute, mixed $value): bool

}

Costanti predefinite

Pdo\Mysql::ATTR_USE_BUFFERED_QUERY

By default all statements are executed in buffered mode. If this attribute is set to false on a Pdo\Mysql object, the MySQL driver will use the unbuffered mode.

Example #1 Setting MySQL unbuffered mode

<?php
$pdo = new Pdo\Mysql("mysql:host=localhost;dbname=world", 'my_user', 'my_password');
$pdo->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);

$unbufferedResult = $pdo->query("SELECT Name FROM City");
foreach ($unbufferedResult as $row) {
    echo $row['Name'] . PHP_EOL;
}
?>

Pdo\Mysql::ATTR_LOCAL_INFILE

Enable LOAD LOCAL INFILE.

Pdo\Mysql::ATTR_LOCAL_INFILE_DIRECTORY

Allows restricting LOCAL DATA loading to files located in this designated directory.

Pdo\Mysql::ATTR_INIT_COMMAND

Command to execute when connecting to the MySQL server. Will automatically be re-executed when reconnecting.

Pdo\Mysql::ATTR_READ_DEFAULT_FILE

Read options from the named option file instead of from my.cnf.

Pdo\Mysql::ATTR_READ_DEFAULT_GROUP

Read options from the named group from my.cnf or the file specified with Pdo\Mysql::ATTR_READ_DEFAULT_FILE.

Pdo\Mysql::ATTR_COMPRESS

Enable network communication compression.

Pdo\Mysql::ATTR_DIRECT_QUERY

Alias di PDO::ATTR_EMULATE_PREPARES.

Pdo\Mysql::ATTR_FOUND_ROWS

Return the number of found (matched) rows, not the number of changed rows.

Pdo\Mysql::ATTR_IGNORE_SPACE

Permit spaces after SQL function names. Makes all SQL functions names reserved words.

Pdo\Mysql::ATTR_MAX_BUFFER_SIZE

Maximum buffer size. Defaults to 1 MiB.

Pdo\Mysql::ATTR_MULTI_STATEMENTS

Disables multi query execution in both PDO::prepare() and PDO::query() when set to false.

Pdo\Mysql::ATTR_SERVER_PUBLIC_KEY

RSA public key file used with the SHA-256 based authentication.

Pdo\Mysql::ATTR_SSL_KEY

The file path to the SSL key.

Pdo\Mysql::ATTR_SSL_CERT

The file path to the SSL certificate.

Pdo\Mysql::ATTR_SSL_CA

The file path to the SSL certificate authority.

Pdo\Mysql::ATTR_SSL_CAPATH

The file path to the directory that contains the trusted SSL CA certificates, which are stored in PEM format.

Pdo\Mysql::ATTR_SSL_CIPHER

A list of one or more permissible ciphers to use for SSL encryption, in a format understood by OpenSSL. For example: DHE-RSA-AES256-SHA:AES128-SHA

Pdo\Mysql::ATTR_SSL_VERIFY_SERVER_CERT

Provides a way to disable verification of the server SSL certificate.

Indice dei contenuti

Pdo\Mysql::getWarningCount — Returns the number of warnings from the last executed query

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