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PHP : Function Reference : PostgreSQL Functions : pg_lo_read_all

pg_lo_read_all

Reads an entire large object and send straight to browser (PHP 4 >= 4.2.0, PHP 5)
int pg_lo_read_all ( resource large_object )

Example 1948. pg_lo_read_all() example

<?php
  header
('Content-type: image/jpeg');
 
$image_oid = 189762345;
 
$database = pg_connect("dbname=jacarta");
 
pg_query($database, "begin");
 
$handle = pg_lo_open($database, $image_oid, "r");
 
pg_lo_read_all($handle);
 
pg_query($database, "commit");
?>

Code Examples / Notes » pg_lo_read_all

robert dot bernier5

// remember, large objects must be obtained from within a transaction
pg_query ($dbconn, "begin");
// "assume" for this example that the large object resource number of the zipped file is "17899"
$lo_oid = 17899;
$handle_lo = pg_lo_open($dbconn,$lo_oid,"r") or die("<h1>Error.. can't get handle</h1>");
//headers to send to the browser before beginning the binary download
header('Accept-Ranges: bytes');
header('Content-Length: 32029974'); //this is the size of the zipped file
header('Keep-Alive: timeout=15, max=100');
header('Content-type: Application/x-zip');
header('Content-Disposition: attachment; filename="superjob.zip"');
pg_lo_read_all($handle_lo) or
 die("<h1>Error, can't read large object.</h1>");
// committing the data transaction
pg_query ($dbconn, "commit");


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