fbsql_fetch_field

説明

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

<?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);
?>

fbsql_field_seek()も参照下さい。