PHP 5.6.0 released

maxdb_fetch_lengths

maxdb_result::lengths

(PECL maxdb >= 1.0)

maxdb_fetch_lengths -- maxdb_result::lengthsReturns the lengths of the columns of the current row in the result set

Descrizione

Stile procedurale

array maxdb_fetch_lengths ( resource $result )

Stile orientato agli oggetti

array $maxdb_result->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 o FALSE in caso di fallimento.

Valori restituiti

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.

Esempi

Example #1 Stile orientato agli oggetti

<?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();
?>

Example #2 Stile procedurale

<?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);
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

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
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