PDO 类

(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.1.0)

简介

代表 PHP 和数据库服务之间的一个连接

类摘要

class PDO {

/* 常量 */

public const int PARAM_NULL;

public const int PARAM_BOOL = 5;

public const int PARAM_INT = 1;

public const int PARAM_STR = 2;

public const int PARAM_LOB = 3;

public const int PARAM_STMT = 4;

public const int PARAM_INPUT_OUTPUT;

public const int PARAM_STR_NATL;

public const int PARAM_STR_CHAR;

public const int PARAM_EVT_ALLOC;

public const int PARAM_EVT_FREE;

public const int PARAM_EVT_EXEC_PRE;

public const int PARAM_EVT_EXEC_POST;

public const int PARAM_EVT_FETCH_PRE;

public const int PARAM_EVT_FETCH_POST;

public const int PARAM_EVT_NORMALIZE;

public const int FETCH_DEFAULT;

public const int FETCH_LAZY;

public const int FETCH_ASSOC;

public const int FETCH_NUM;

public const int FETCH_BOTH;

public const int FETCH_OBJ;

public const int FETCH_BOUND;

public const int FETCH_COLUMN;

public const int FETCH_CLASS;

public const int FETCH_INTO;

public const int FETCH_FUNC;

public const int FETCH_GROUP;

public const int FETCH_UNIQUE;

public const int FETCH_KEY_PAIR;

public const int FETCH_CLASSTYPE;

public const int FETCH_SERIALIZE;

public const int FETCH_PROPS_LATE;

public const int FETCH_NAMED;

public const int ATTR_AUTOCOMMIT;

public const int ATTR_PREFETCH;

public const int ATTR_TIMEOUT;

public const int ATTR_ERRMODE;

public const int ATTR_SERVER_VERSION;

public const int ATTR_CLIENT_VERSION;

public const int ATTR_SERVER_INFO;

public const int ATTR_CONNECTION_STATUS;

public const int ATTR_CASE;

public const int ATTR_CURSOR_NAME;

public const int ATTR_CURSOR;

public const int ATTR_ORACLE_NULLS;

public const int ATTR_PERSISTENT;

public const int ATTR_STATEMENT_CLASS;

public const int ATTR_FETCH_TABLE_NAMES;

public const int ATTR_FETCH_CATALOG_NAMES;

public const int ATTR_DRIVER_NAME;

public const int ATTR_STRINGIFY_FETCHES;

public const int ATTR_MAX_COLUMN_LEN;

public const int ATTR_EMULATE_PREPARES;

public const int ATTR_DEFAULT_FETCH_MODE;

public const int ATTR_DEFAULT_STR_PARAM;

public const int ERRMODE_SILENT;

public const int ERRMODE_WARNING;

public const int ERRMODE_EXCEPTION;

public const int CASE_NATURAL;

public const int CASE_LOWER;

public const int CASE_UPPER;

public const int NULL_NATURAL;

public const int NULL_EMPTY_STRING;

public const int NULL_TO_STRING;

public const string ERR_NONE;

public const int FETCH_ORI_NEXT;

public const int FETCH_ORI_PRIOR;

public const int FETCH_ORI_FIRST;

public const int FETCH_ORI_LAST;

public const int FETCH_ORI_ABS;

public const int FETCH_ORI_REL;

public const int CURSOR_FWDONLY;

public const int CURSOR_SCROLL;

/* 方法 */

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

public beginTransaction(): bool

public commit(): bool

public errorCode(): ?string

public errorInfo(): array

public exec(string $statement): int|false

public getAttribute(int $attribute): mixed

public static getAvailableDrivers(): array

public inTransaction(): bool

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

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

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

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

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

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

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

public rollBack(): bool

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

}

PDO::beginTransaction — 启动一个事务
PDO::commit — 提交一个事务
PDO::__construct — 创建一个表示数据库连接的 PDO 实例
PDO::errorCode — 获取跟数据库句柄上一次操作相关的 SQLSTATE
PDO::errorInfo — Fetch extended error information associated with the last operation on the database handle
PDO::exec — 执行 SQL 语句，并返回受影响的行数
PDO::getAttribute — 取回一个数据库连接的属性
PDO::getAvailableDrivers — 返回一个可用驱动的数组
PDO::inTransaction — 检查是否在事务内
PDO::lastInsertId — 返回最后插入行的ID或序列值
PDO::prepare — 预处理要执行的语句，并返回语句对象
PDO::query — 预处理并执行没有占位符的 SQL 语句
PDO::quote — 为 SQL 查询里的字符串添加引号
PDO::rollBack — 回滚事务
PDO::setAttribute — 设置属性

PDO 类

简介

类摘要

目录