ibase_num_fields

<?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"; 
    }
?>