ibase_field_info

<?php
    $rs = ibase_query("SELECT * FROM tablename"); 
    $coln = ibase_num_fields($rs);
    for ($i = 0; $i < $coln; $i++) {
        $col_info = ibase_field_info($rs, $i); 
        echo "name: ". $col_info['name']. "\n"; 
        echo "alias: ". $col_info['alias']. "\n"; 
        echo "relation: ". $col_info['relation']. "\n"; 
        echo "length: ". $col_info['length']. "\n"; 
        echo "type: ". $col_info['type']. "\n"; 
    }
?>