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pg_query

(PHP 4 >= 4.2.0, PHP 5)

pg_query -- Execute a query

Descripción

resource pg_query ( string query )

resource pg_query ( resource connection, string query )

pg_query() executes the query on the specified database connection.

If an error occurs, and FALSE is returned, details of the error can be retrieved using the pg_last_error() function if the connection is valid.

Nota: Although connection can be omitted, it is not recommended, since it can be the cause of hard to find bugs in scripts.

Nota: This function used to be called pg_exec(). pg_exec() is still available for compatibility reasons, but users are encouraged to use the newer name.

Lista de parámetros

connection

PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

query

The SQL statement or statements to be executed.

Valores retornados

A query result resource on success, or FALSE on failure.

Ejemplos

Ejemplo 1. pg_query() 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;
}

while ($row = pg_fetch_row($result)) {
  echo "Author: $row[0]  E-mail: $row[1]";
  echo "<br />\n";
}

?>

Ver también

pg_connect()
pg_pconnect()
pg_fetch_array()
pg_fetch_object()
pg_num_rows()
pg_affected_rows()

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