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Returns the lengths of the columns of the current row in the result set


mysqli_result::$lengths

mysqli_fetch_lengths

(PHP 5)

mysqli_result::$lengths -- mysqli_fetch_lengthsReturns the lengths of the columns of the current row in the result set

Description

Object oriented style

Procedural style

array mysqli_fetch_lengths ( mysqli_result $result )

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 


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