42
mysqli_result::$lengths, mysqli_fetch_lengths
236
The mysqli_fetch_lengths function returns an array containing the lengths of every column of the
current row within the result set.
Parameters
result
Procedural style only: A result set identifier returned by mysqli_query,
mysqli_store_result or mysqli_use_result.
Return Values
An array of integers representing the size of each column (not including any terminating null characters).
FALSE if an error occurred.
mysqli_fetch_lengths is valid only for the current row of the result set. It returns FALSE if you call it
before calling mysqli_fetch_row/array/object or after retrieving all rows in the result.
Examples
Example 3.131 Object oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT * from Country ORDER BY Code LIMIT 1";
if ($result = $mysqli->query($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 */
$mysqli->close();
?>
Example 3.132 Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
