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pg_numfields
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pg_numfields

Name

pg_numfields — Retrieves the number of fields from a query.

Synopsis

int pg_numfields(result); int result: Result identifier

Returns

Number of columns; FALSE on error

Description

Returns the number of fields in a table when used with pg_listfields() .

Example

Example 1052. Display number of fields

$db = pg_connect("host=dbserver dbname=db user=dbuser password=dbpasswd");
$result = pg_exec($db,"SELECT * FROM employees WHERE age>65");
// traverse rows
for ($i=0; $i < pg_numrows($result);; $i++) {
  echo "<b>ROW $i</b><BR>\n";
  // traverse each field
  for ($j=0; $j < pg_numfields($result); $j++) {
    $field = pg_fieldname($result,$j);
    printf("Field %s equals %s\n", $field, pg_result($result,$i,$j));
  }
}

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.