pg_fetch_all
pg_fetch_assoc
PostgreSQL Функции
PHP Manual

# pg_fetch_array

(PHP 4, PHP 5)

pg_fetch_array — Fetch a row as an array

### Описание

array pg_fetch_array ( resource `$result` [, int `$row` [, int `$result_type` ]] )

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 indicies by default.

> Замечание: Эта функция устанавливает NULL-поля в значение `NULL` PHP.

pg_fetch_array() is NOT significantly slower than using pg_fetch_row(), and is significantly easier to use.

### Список параметров

`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, next row is fetched.

`result_type`

  An optional parameter that controls how the returned array is indexed. `result_type` is a constant and can take the following values: `PGSQL_ASSOC`, `PGSQL_NUM` and `PGSQL_BOTH`. Using `PGSQL_NUM`, pg_fetch_array() will return an array with numerical indices, using `PGSQL_ASSOC` it will return only associative indices while `PGSQL_BOTH`, the default, will return both numerical and associative indices.

### Возвращаемые значения

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.

### Список изменений

Версия | Описание
--- | ---
4.1.0 | The `row` parameter became optional.
4.0.0 | The `result_type` parameter was added.

### Примеры

Пример #1 pg_fetch_array() 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;
}
$arr = pg_fetch_array($result, 0, PGSQL_NUM);
echo $arr[0] . " <- Row 1 Author\n";
echo $arr[1] . " <- Row 1 E-mail\n";
// As of PHP 4.1.0, 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";
?>`

### Смотрите также

- pg_fetch_row()
- pg_fetch_object()
- pg_fetch_result()

pg_fetch_all
pg_fetch_assoc
PostgreSQL Функции
PHP Manual