php 한글 메뉴얼 도움말 검색 사이트 Get column information from a result and return as an object [function.fbsql-fetch-field]

설명

object fbsql_fetch_field ( resource $result [, int $field_offset ] )

Used in order to obtain information about fields in a certain query result.

인수

result: fbsql_query()나 fbsql_db_query()가 반환한 결과셋 식별자.
field_offset: The numerical offset of the field. The field index starts at 0. If not specified, the next field that wasn't yet retrieved by fbsql_fetch_field() is retrieved.

반환값

Returns an object containing field information, or FALSE on errors.

The properties of the object are:

name - column name
table - name of the table the column belongs to
max_length - maximum length of the column
not_null - 1 if the column cannot be NULL
type - the type of the column

예제

Example #1 fbsql_fetch_field() example


<?php
fbsql_connect($host, $user, $password)
    or die("Could not connect");
$result = fbsql_db_query("database", "select * from table")
    or die("Query failed");
# get column metadata
$i = 0;
while ($i < fbsql_num_fields($result)) {
    echo "Information for column $i:<br />\n";
    $meta = fbsql_fetch_field($result);
    if (!$meta) {
        echo "No information available<br />\n";
    }
    echo "<pre>
max_length:   $meta->max_length
name:         $meta->name
not_null:     $meta->not_null
table:        $meta->table
type:         $meta->type
</pre>";
    $i++;
}
fbsql_free_result($result);
?>

참고

fbsql_field_seek() - Set result pointer to a specified field offset