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# maxdb_stmt_result_metadata

(PECL)

maxdb_stmt_result_metadata -- Returns result set metadata from a prepared statement

## Description

Procedural style:

resource maxdb_stmt_result_metadata ( resource stmt )

Object oriented style (method):

class stmt {
resource result_metadata ( void )
}

If a statement passed to maxdb_prepare() is one that produces a result set, maxdb_stmt_result_metadata() returns the result resource that can be used to process the meta information such as total number of fields and individual field information.

> Note: This result set pointer can be passed as an argument to any of the field-based functions that process result set metadata, such as:

> - maxdb_num_fields()

> - maxdb_fetch_field()

> - maxdb_fetch_field_direct()

> - maxdb_fetch_fields()

> - maxdb_field_count()

> - maxdb_field_seek()

> - maxdb_field_tell()

> - maxdb_free_result()

The result set structure should be freed when you are done with it, which you can do by passing it to maxdb_free_result()

> Note: The result set returned by maxdb_stmt_result_metadata() contains only metadata. It does not contain any row results. The rows are obtained by using the statement handle with maxdb_fetch().

## Return Values

maxdb_stmt_result_metadata() returns a result resource or `FALSE` if an error occured.

## See also:

maxdb_prepare(), maxdb_free_result()

## Example

Example 1. Object oriented style
`<?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); $maxdb->query("CREATE TABLE temp.friends (id int, name varchar(20))"); $maxdb->query("INSERT INTO temp.friends VALUES (1,'Hartmut')"); $maxdb->query("INSERT INTO temp.friends VALUES (2, 'Ulf')"); $stmt = $maxdb->prepare("SELECT id, name FROM temp.friends"); $stmt->execute(); /* get resultset for metadata */ $result = $stmt->result_metadata(); /* retrieve field information from metadata result set */ $field = $result->fetch_field(); printf("Fieldname: %s\n", $field->name); /* close resultset */ $result->close(); /* close connection */ $maxdb->close(); ?>`

Example 2. Procedural style
`<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); maxdb_query($link, "CREATE TABLE temp.friends (id int, name varchar(20))"); maxdb_query($link, "INSERT INTO temp.friends VALUES (1,'Hartmut')"); maxdb_query($link, "INSERT INTO temp.friends VALUES (2, 'Ulf')"); $stmt = maxdb_prepare($link, "SELECT id, name FROM temp.friends"); maxdb_stmt_execute($stmt); /* get resultset for metadata */ $result = maxdb_stmt_result_metadata($stmt); /* retrieve field information from metadata result set */ $field = maxdb_fetch_field($result); printf("Fieldname: %s\n", $field->name); /* close resultset */ maxdb_free_result($result); /* close connection */ maxdb_close($link); ?>`

The above examples would produce the following output:

    Fieldname: ID

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