pg_fetch_result
pg_fetch_row is faster than pg_fetch_assoc when doing a query with * as the select parameter. Otherwise, with declared columns, the two are similar in speed.
pg_fetch_row
(PHP 4, PHP 5)
pg_fetch_row — Get a row as an enumerated array
Description
array pg_fetch_row
( resource $result
[, int $row
] )
pg_fetch_row() fetches one row of data from the result associated with the specified result resource.
Note: This function sets NULL fields to the PHP NULL value.
Parameters
- result
-
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
- row
-
Row number in result to fetch. Rows are numbered from 0 upwards. If omitted or NULL, the next row is fetched.
Return Values
An array, indexed from 0 upwards, with each value represented as a string. Database NULL values are returned as NULL.
FALSE is returned if row exceeds the number of rows in the set, there are no more rows, or on any other error.
Changelog
| Version | Description |
|---|---|
| 4.1.0 | The parameter row became optional. |
Examples
Example #1 pg_fetch_row() example
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occured.\n";
exit;
}
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occured.\n";
exit;
}
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}
?>
See Also
- pg_query() - Execute a query
- pg_fetch_array() - Fetch a row as an array
- pg_fetch_object() - Fetch a row as an object
- pg_fetch_result() - Returns values from a result resource
add a note
User Contributed Notes
pg_fetch_row
eddie at eddiemonge dot com
06-Oct-2009 05:09
pletiplot at seznam dot cz
06-Jun-2006 03:18
Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.
post at zeller-johannes dot de
26-Apr-2005 02:51
I wondered whether array values of PostgreSQL are converted to PHP arrays by this functions. This is not the case, they are stored in the returned array as a string in the form "{value1 delimiter value2 delimiter value3}" (See http://www.postgresql.org/docs/8.0/interactive/arrays.html#AEN5389).
maxnamara at yahoo dot com
14-Oct-2004 12:03
Get downlines, put them into arrays.
function get_downlines($my_code){
global $link;
$sql = "select user_id, name from tb_user where parentcode = $my_code";
$res = pg_query($link,$sql);
if(!$res){
echo "Error: ".$sql;exit();
}
$num_fields = pg_num_fields($res);
$info_rows = 0;
$num_rows = pg_num_rows($res);
while($arr = pg_fetch_row($res)){
$info_offset = 1;
$info_columns = 0;
while ($info_offset <= $num_fields) {
$info_elements[$info_rows][$info_columns] = $arr[$info_columns];
$info_offset++; $info_columns++;
}
$info_rows++;
}
return $info_elements;
}
Matthew Wheeler
22-May-2003 09:29
Note that the internal row counter is incremented BEFORE the row is retrieved. This causes an off by one error if you try to do:
pg_result_seek($resid,0);
pg_fetch_row($resid);
you will get back the SECOND result not the FIRST.
imantr at cbn dot net dot id
23-Jul-2002 08:38
I use the following code to assigning query result to an array.
while ($row = pg_fetch_row($result)) $newArray[] = $row[0];
print_r($newArray);
darw75 at swbell dot net
22-Aug-2001 05:39
a way to do this with 2 loops to insert data into a table...
$num = pg_numrows($result);
$col_num = pg_numfields($result);
for ($i=0; $i<$num; $i++) {
$line = pg_fetch_array($result, $i, PGSQL_ASSOC);
print "\t<tr bgcolor=#dddddd>\n";
for ($j=0; $j<$col_num; $j++){
list($col_name, $col_value) =each($line);
print "\t\t<TD ALIGN=RIGHT><FONT SIZE=1 FACE='Geneva'>$col_value</FONT></TD>\n";
}
echo "<br>";
}