(PHP 5 >= 5.1.0)
pg_send_query_params — Submits a command and separate parameters to the server without waiting for the result(s).
$connection
   , string $query
   , array $params
   )Submits a command and separate parameters to the server without waiting for the result(s).
    This is equivalent to pg_send_query() except that query 
    parameters can be specified separately from the 
    query string. The function's parameters are 
    handled identically to pg_query_params(). Like 
    pg_query_params(), it will not work on pre-7.4 PostgreSQL 
    connections, and it allows only one command in the query string. 
  
connectionPostgreSQL database connection resource.
queryThe parameterized SQL statement. Must contain only a single statement. (multiple statements separated by semi-colons are not allowed.) If any parameters are used, they are referred to as $1, $2, etc.
paramsAn array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string. The number of elements in the array must match the number of placeholders.
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Use pg_get_result() to determine the query result.
Example #1 Using pg_send_query_params()
<?php
  $dbconn = pg_connect("dbname=publisher") or die("Could not connect");
  // Using parameters.  Note that it is not necessary to quote or escape
  // the parameter.
  pg_send_query_params($dbconn, 'select count(*) from authors where city = $1', array('Perth'));
  
  // Compare against basic pg_send_query usage
  $str = pg_escape_string('Perth');
  pg_send_query($dbconn, "select count(*) from authors where city = '${str}'");
?>