pg_fetch_array
(PHP 4, PHP 5, PHP 7, PHP 8)
pg_fetch_array — Fetch a row as an array
Description
pg_fetch_array() returns an array that corresponds to the fetched row (record).
pg_fetch_array() is an extended version of pg_fetch_row(). In addition to storing the data in the numeric indices (field number) to the result array, it can also store the data using associative indices (field name). It stores both indices by default.
Note: This function sets NULL fields to the PHP
nullvalue.
pg_fetch_array() is NOT significantly slower than using pg_fetch_row(), and is significantly easier to use.
Parameters
-
result -
An PgSql\Result instance, 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. -
mode -
An optional parameter that controls how the returned array is indexed.
modeis a constant and can take the following values:PGSQL_ASSOC,PGSQL_NUMandPGSQL_BOTH. UsingPGSQL_NUM, the function will return an array with numerical indices, usingPGSQL_ASSOCit will return only associative indices whilePGSQL_BOTHwill return both numerical and associative indices.
Return Values
An array indexed numerically (beginning with 0) or
associatively (indexed by field name), or both.
Each value in the array is 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.
Fetching from the result of a query other than SELECT will also return false.
Changelog
| Version | Description |
|---|---|
| 8.1.0 |
The result parameter expects an PgSql\Result
instance now; previously, a resource was expected.
|
Examples
Example #1 pg_fetch_array() example
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.\n";
exit;
}
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occurred.\n";
exit;
}
$arr = pg_fetch_array($result, 0, PGSQL_NUM);
echo $arr[0] . " <- Row 1 Author\n";
echo $arr[1] . " <- Row 1 E-mail\n";
// The row parameter is optional; NULL can be passed instead,
// to pass a result_type. Successive calls to pg_fetch_array
// will return the next row.
$arr = pg_fetch_array($result, NULL, PGSQL_ASSOC);
echo $arr["author"] . " <- Row 2 Author\n";
echo $arr["email"] . " <- Row 2 E-mail\n";
$arr = pg_fetch_array($result);
echo $arr["author"] . " <- Row 3 Author\n";
echo $arr[1] . " <- Row 3 E-mail\n";
?>
See Also
- pg_fetch_row() - Get a row as an enumerated array
- pg_fetch_object() - Fetch a row as an object
- pg_fetch_result() - Returns values from a result instance
