pg_result_seek

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

pg_result_seek — Set internal row offset in result instance

Опис

pg_result_seek(PgSql\Result $result, int $row): bool

pg_result_seek() sets the internal row offset in the result instance.

Параметри

result: Примірник PgSql\Result, якого повертає одна з функцій pg_query(), pg_query_params() або pg_execute() (серед інших).
row: Row to move the internal offset to in the PgSql\Result instance. Rows are numbered starting from zero.

Значення, що повертаються

Повертає true у разі успіху або false в разі помилки.

Журнал змін

Версія	Опис
8.1.0	Тепер параметр `result` має бути примірником PgSql\Result. Раніше очікувався resource.

Приклади

Приклад #1 pg_result_seek() example

<?php

// Connect to the database
$conn = pg_pconnect("dbname=publisher");

// Execute a query
$result = pg_query($conn, "SELECT author, email FROM authors");

// Seek to the 3rd row (assuming there are 3 rows)
pg_result_seek($result, 2);

// Fetch the 3rd row
$row = pg_fetch_row($result);
 
?>

Прогляньте також

pg_fetch_row() - Get a row as an enumerated array
pg_fetch_assoc() - Fetch a row as an associative array
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 instance

Improve This Page

Learn How To Improve This Page • Submit a Pull Request • Report a Bug

＋add a note

User Contributed Notes 1 note

down

andrew-php dot net at andrew dot net dot au ¶

20 years ago

Ah, this is a handy feature for resetting the record index, for example, if you're used pg_fetch_{row,array,assoc} to iterate over the result set, and you want to do it again later on, without reexecuting your query. Something like:

<?php pg_result_seek($result, 0); ?>

will allow you to iterate over the result set all over again...

＋add a note