(PHP 4 >= 4.2.0, PHP 5)
pg_field_prtlen — Returns the printed length
   pg_field_prtlen() returns the actual printed
   length (number of characters) of a specific value in a PostgreSQL
   result.  Row numbering starts at 0.  This
   function will return FALSE on an error.
  
   field_name_or_number can be passed either as an
   integer or as a string. If it is passed as an
   integer, PHP recognises it as the field number, otherwise as
   field name.
  
See the example given at the pg_field_name() page.
Note:
This function used to be called pg_fieldprtlen().
resultPostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
rowRow number in result. Rows are numbered from 0 upwards. If omitted, current row is fetched.
   The field printed length, or FALSE on error.
  
Example #1 Getting information about fields
<?php
  $dbconn = pg_connect("dbname=publisher") or die("Could not connect");
  $res = pg_query($dbconn, "select * from authors where author = 'Orwell'");
  $i = pg_num_fields($res);
  for ($j = 0; $j < $i; $j++) {
      echo "column $j\n";
      $fieldname = pg_field_name($res, $j);
      echo "fieldname: $fieldname\n";
      echo "printed length: " . pg_field_prtlen($res, $fieldname) . " characters\n";
      echo "storage length: " . pg_field_size($res, $j) . " bytes\n";
      echo "field type: " . pg_field_type($res, $j) . " \n\n";
  }
?>
The above example will output:
column 0 fieldname: author printed length: 6 characters storage length: -1 bytes field type: varchar column 1 fieldname: year printed length: 4 characters storage length: 2 bytes field type: int2 column 2 fieldname: title printed length: 24 characters storage length: -1 bytes field type: varchar