Php pdostatement getcolumnmeta () function

Write your php code

(no version information, might be only in CVS)

PDOStatement::getColumnMeta -- Returns metadata for a column in a result set

Syntax

mixed PDOStatement::getColumnMeta ( int column )

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

Retrieves the metadata for a 0-indexed column in a result set as an associative array.

Warning

Not all PDO drivers support PDOStatement::getColumnMeta().

Parameters

column: The 0-indexed column in the result set.

Return Values

Returns an associative array containing the following values representing the metadata for a single column:

Table 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.

Examples

Example 1. Retrieving column metadata

The following example shows the results of retrieving the metadata for a single column generated by a function (COUNT) in a PDO_SQLITE driver.


<?php
$select = $DB->query('SELECT COUNT(*) FROM fruit');
$meta = $select->getColumnMeta(0);
var_dump($meta);
?>

The above example will output:

array(6) {
  ["native_type"]=>
  string(7) "integer"
  ["flags"]=>
  array(0) {
  }
  ["name"]=>
  string(8) "COUNT(*)"
  ["len"]=>
  int(-1)
  ["precision"]=>
  int(0)
  ["pdo_type"]=>
  int(2)
}

Php pdostatement getcolumnmeta Function syntax tag

pdostatement getcolumnmeta php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online

Php pdostatement getcolumnmeta syntax tutorial

php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.