maxdb_fetch_lengths
(PECL)
maxdb_fetch_lengths
(no version information, might be only in CVS)
result->lengths -- Returns the lengths of the columns of the current row in the result set
Description
Procedural style:
mixed
maxdb_fetch_lengths ( resource result )
Object oriented style (property):
class
result {
mixed lengths
}
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 or FALSE on failure.
Return values
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.
Example
例子 1. Object oriented style
<?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 = $result->fetch_row();
/* display column lengths */
for ($i=0; $i < count($result->lengths); $i++) {
printf("Field %2d has Length %2d\n", $i+1, $result->lengths[$i]);
}
$result->close();
}
/* close connection */
$maxdb->close();
?>
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例子 2. Procedural style
<?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 */
$lengths = maxdb_fetch_lengths($result);
for ($i=0; $i < count($lengths); $i++) {
printf("Field %2d has Length %2d\n", $i+1, $lengths[$i]);
}
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
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The above examples would produce the following output:
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 |