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pg_loread
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pg_loread

Name

pg_loread — Reads data from a large object.

Synopsis

string pg_loread(fd, length); int fd: File descriptor int length: Length

Returns

Contents of field

Description

Writes the contents of a large object to a string. The file descriptor, which is obtained from pg_loopen() , must be readable. Data from the large object will be returned until end of output or until the maximum byte length specified by length has been returned.

Example

Example 1048. Read a large object

$db = pg_connect("host=dbserver dbname=db user=dbuser password=dbpasswd") or die ("Unable to connect");
$sql = "SELECT first_name, last_name, details2 FROM employees";
$result = pg_exec($db, $sql);
$rowcount = 0;
while (list($first, $last, $details) = @pg_fetch_array($result, $rowcount)) {
    echo "$first $last";
    pg_exec($db,"begin");
    $fhandle = pg_loopen($db,$details,"r");
    $text=pg_loread($fhandle,2048);
    echo $text;
    pg_loclose($fd);
    pg_exec($db,"commit");
    $rowcount++;
}

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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.