fbsql_fetch_field

Get column information from a result and return as an object (PHP 4 >= 4.0.6)
object fbsql_fetch_field ( resource result [, int field_offset ] )

Returns an object containing field information.

fbsql_fetch_field() can be used in order to obtain information about fields in a certain query result. If the field offset isn't specified, the next field that wasn't yet retrieved by fbsql_fetch_field() is retrieved.

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

Example 289. fbsql_fetch_field() example

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<?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);
?>

See also fbsql_field_seek().

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