db_query_range

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Definition

db_query_range($query)
includes/database.pgsql.inc, line 270

Description

Runs a limited-range query in the active database.

Use this as a substitute for db_query() when a subset of the query is to be returned. User-supplied arguments to the query should be passed in as separate parameters so that they can be properly escaped to avoid SQL injection attacks.

NOTE: using this syntax will cast NULL and FALSE values to decimal 0, and TRUE values to decimal 1.

Parameters

$query A string containing an SQL query.

... A variable number of arguments which are substituted into the query using printf) syntax. Instead of a variable number of query arguments, you may also pass a single array containing the query arguments. Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose in '') and %%.

$from The first result row to return.

$count The maximum number of result rows to return.

Return value

A database query result resource, or FALSE if the query was not executed correctly.

Related topics

Name	Description
Database abstraction layer	Allow the use of different database servers using the same code base.

Code

<?php
function db_query_range($query) {
  $args = func_get_args();
  $count = array_pop($args);
  $from = array_pop($args);
  array_shift($args);

  $query = db_prefix_tables($query);
  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
    $args = $args[0];
  }
  _db_query_callback($args, TRUE);
  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
  $query .= ' LIMIT '. (int)$count .' OFFSET '. (int)$from;
  return _db_query($query);
}
?>