(no version information, might be only in CVS)
PDOStatement::getColumnMeta -- Returns metadata for a column in a result set警告 |
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Retrieves the metadata for a 0-indexed column in a result set as an associative array.
警告 |
Not all PDO drivers support PDOStatement::getColumnMeta(). |
Returns an associative array containing the following values representing the metadata for a single column:
表格 1. Column metadata
Name | Value |
---|---|
native_type | The PHP native type used to represent the column value. |
driver:decl_type | The SQL type used to represent the column value in the database. If the column in the result set is the result of a function, this value is not returned by PDOStatement::getColumnMeta(). |
flags | Any flags set for this column. |
name | The name of this column as returned by the database. |
len | The length of this column. Normally -1 for types other than floating point decimals. |
precision | The numeric precision of this column. Normally 0 for types other than floating point decimals. |
pdo_type | The type of this column as represented by the PDO::PARAM_* constants. |
Returns FALSE if the requested column does not exist in the result set, or if no result set exists.