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(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_num_fields — Returns the number of fields in a result
pg_num_fields() returns the number of fields (columns) in the PgSql\Result instance.
Nota:
This function used to be called pg_numfields().
result
Uma instância de PgSql\Result, retornada por pg_query(), pg_query_params() ou pg_execute() (entre outras).
The number of fields (columns) in the result. On error, -1 is returned.
Versão | Descrição |
---|---|
8.1.0 |
O parâmetro result agora espera uma instância de PgSql\Result;
anteriormente, um resource era esperado.
|
Exemplo #1 pg_num_fields() example
<?php
$result = pg_query($conn, "SELECT 1, 2");
$num = pg_num_fields($result);
echo $num . " field(s) returned.\n";
?>
O exemplo acima produzirá:
2 field(s) returned.