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...
pg_result_seek
(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
pg_result_seek — Set internal row offset in result instance
Descrição
pg_result_seek() sets the internal row offset in
the result instance.
Parâmetros
-
result -
Uma instância de PgSql\Result, retornada por pg_query(), pg_query_params() ou pg_execute() (entre outras).
-
row -
Row to move the internal offset to in the PgSql\Result instance. Rows are numbered starting from zero.
Valor Retornado
Retorna true em caso de sucesso ou false em caso de falha.
Registro de Alterações
| Versão | Descrição |
|---|---|
| 8.1.0 |
O parâmetro result agora espera uma instância de PgSql\Result;
anteriormente, um resource era esperado.
|
Exemplos
Exemplo #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);
?>Veja Também
- 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
add a note
User Contributed Notes 1 note
andrew-php dot net at andrew dot net dot au ¶
20 years ago
