Php/docs/mysqli-result.lengths
mysqli_result::$lengths
mysqli_fetch_lengths
(PHP 5, PHP 7)
mysqli_result::$lengths -- mysqli_fetch_lengths — Returns the lengths of the columns of the current row in the result set
Description
Object oriented style
array $mysqli_result->lengths;
Procedural style
mysqli_fetch_lengths
( mysqli_result $result
) : array
The mysqli_fetch_lengths() function returns an array containing the lengths of every column of the current row within the result set.
Parameters
result- Procedural style only: A result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result().
Return Values
An array of integers representing the size of each column (not including
any terminating null characters). FALSE if an error occurred.
mysqli_fetch_lengths() is valid only for the current
row of the result set. It returns FALSE if you call it before calling
mysqli_fetch_row/array/object or after retrieving all rows in the result.
Examples
Example #1 Object oriented style
<?php$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 #2 Procedural style
<?php$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}$query = "SELECT * from Country ORDER BY Code LIMIT 1";if ($result = mysqli_query($link, $query)) { $row = mysqli_fetch_row($result); /* display column lengths */ foreach (mysqli_fetch_lengths($result) as $i => $val) { printf("Field %2d has Length %2d\n", $i+1, $val); } mysqli_free_result($result);}/* close connection */mysqli_close($link);?>
The above examples will output:
Field 1 has Length 3 Field 2 has Length 5 Field 3 has Length 13 Field 4 has Length 9 Field 5 has Length 6 Field 6 has Length 1 Field 7 has Length 6 Field 8 has Length 4 Field 9 has Length 6 Field 10 has Length 6 Field 11 has Length 5 Field 12 has Length 44 Field 13 has Length 7 Field 14 has Length 3 Field 15 has Length 2
