Code:
  for($i=0; $i< $cols; $i++){
    $o_pom = sybase_fetch_field($query, $i);
    $s_pom = $o_pom->name;
    $s2_pom = $o_pom->column_source;
    echo "  <TH>$s2_pom.$s_pom\n";
  }

expression $o_pom->column_source do not return value.

- No Error or Warning message
- Value name is returned OK
- simple SQL query with aliased tables
e.g.                ...FROM D_Fond       T1,
                            C_Typ_fondu  T2,
                            D_Osoba      T3