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PHP : Function Reference : PostgreSQL Functions : pg_fetch_object

pg_fetch_object

Fetch a row as an object (PHP 4, PHP 5)
object pg_fetch_object ( resource result [, int row [, int result_type]] )
object pg_fetch_object ( resource result [, int row [, string class_name [, array params]]] )

Example 1923. pg_fetch_object() example

<?php

$database
= "store";

$db_conn = pg_connect("host=localhost port=5432 dbname=$database");
if (!
$db_conn) {
 echo
"Failed connecting to postgres database $database\n";
 exit;
}

$qu = pg_query($db_conn, "SELECT * FROM books ORDER BY author");


while (
$data = pg_fetch_object($qu)) {
 echo
$data->author . " (";
 echo
$data->year . "): ";
 echo
$data->title . "<br />";
}

pg_free_result($qu);
pg_close($db_conn);

?>

Code Examples / Notes » pg_fetch_object

lars

When you retrieve the contents of a "timestamp with timezone" field, this will set the environment's timezone variables. Therefore, this is dangerous:
$s=$row->mydatefield;
$unixtimestamp=postgresqltimestamp2unix($s);
echo date("Y-m-d H:i:s",$unixtimestamp);
Here, postgresqltimestamp2unix is a function that converts the postgresql timestamp to Unix. The retrieval of the field data in the first line of the example above will influence the timezone used in date() in the third line.


ian

This isn't all that useful. If you do, for example, foreach($row as $field) then you still get every value twice!
You can do something like this, though:
foreach ($line as $key => $cell){
    if (! is_numeric($key)){
               echo "<td>$key $cell</td>";
    }
}
is is_numeric strict enough?


inbox

The result_type arg is either invalid or incorrectly documented, since the "result_type is optional..." paragraph is copied verbatim from pg_fetch_array, and the PGSQL_NUM option is in conflict with the preceding paragraph's, "you can only access the data by the field names, and not by their
offsets."


michiel

Something I have learned to use:
$result=$pg_query (...);
$num = pg_numrows($result);
for($count=0;$count < $num && $data=pg_fetch_object($result,$count);$count++)
{
   printf("<tr>\n");
   printf("    <td>%s</td>\n",$data->foo);
   printf("    <td>%s</td>\n",$data->bar);
   printf("</tr>\n");
}


ekevu

PostgreSQL boolean true becomes string "t"
PostgreSQL boolean false becomes string "f"
This is ambiguous, and leads to code duplication. I wonder why aren't the types correctly typed when fetching values. We could at least have an optional parameter to enable that.


oracle dot shinoda

If you're wanting to use objects for your results, but are put off because you can't seem to apply a function to each field of the result (like stripslashes for example), try this code:
<?php
// Code to connect, do query etc etc...
$row = pg_fetch_object($result);
$vars = get_object_vars($row);
foreach ( $vars as $key => $var )
{
$row->{$key} = stripslashes($var);
}
?>


jzago

I use a loop like this:
for ($row = 0; $data = @pg_fetch_object ($res, $row); $row++) {
   // do what you want with the row
}


robeddielee

I noticed that many people use FOR loops to extract query data. This is the method I use to extract data.
<?php
@$members = pg_query($db_conn, 'SELECT id,name FROM boards.members ORDER BY name;');
if ($members AND pg_num_rows($members)) {
 while ($member = pg_fetch_object($members)) {
  echo $member->name.' ('.$member->id.')';
 }
}
?>
If an error occurs (or nothing is returned) in the above code nothing will output. An ELSE clause can be added to the IF to handle query errors (or nothing being returned). Or a seperate check can be performed for the event that nothing is returned by using an ELSEIF clause.
I like this method because it doesn't use any temporary counter variables.


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