Как "переместить" позицию курсора pg_fetch_row, чтобы начать с первой строки, если вы хотите дважды запустить один и тот же результирующий набор?
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occurred.\n";
exit;
}
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}
while ($row = pg_fetch_row($result)) { // <---- THIS WILL ALWAYS SHOW NOTHING AS IT DOESN'T START FROM the first row (0)
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}
Использовать pg_result_seek()
http://php.net/manual/en/function.pg-result-seek.php
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occurred.\n";
exit;
}
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}
pg_result_seek($result, 0);
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}