(PECL maxdb >= 1.0)
maxdb_fetch_lengths -- maxdb_result::lengths — Returns the lengths of the columns of the current row in the result set
Yordamsal kullanım
$result
)Nesne yönelimli kullanım
The maxdb_fetch_lengths() function returns an array containing the
lengths of every column of the current row within the result set represented by the
result parameter. If successful, a numerically indexed array
representing the lengths of each column is returned başarısızlık durumunda FALSE döner.
An array of integers representing the size of each column (not including
any terminating null characters). FALSE if an error occurred.
maxdb_fetch_lengths() is valid only for the current row of the result set.
It returns FALSE if you call it before calling maxdb_fetch_row/array/resource or after retrieving
all rows in the result.
Örnek 1 Nesne yönelimli kullanım
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
$query = "SELECT * from hotel.customer WHERE cno = 3000";
if ($result = $maxdb->query($query)) {
$row = $result->fetch_row();
/* display column lengths */
foreach ($result->lengths as $i => $val) {
printf("Field %2d has Length %2d\n", $i+1, $val);
}
$result->close();
}
/* close connection */
$maxdb->close();
?>
Örnek 2 Yordamsal kullanım
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
$query = "SELECT * from hotel.customer WHERE cno = 3000";
if ($result = maxdb_query($link, $query)) {
$row = maxdb_fetch_row($result);
/* display column lengths */
foreach (maxdb_fetch_lengths($result) as $i => $val) {
printf("Field %2d has Length %2d\n", $i+1, $val);
}
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
Yukarıdaki örnek şuna benzer bir çıktı üretir:
Field 1 has Length 4 Field 2 has Length 3 Field 3 has Length 5 Field 4 has Length 6 Field 5 has Length 5 Field 6 has Length 21