PHP Unconference Europe 2015

mysqli::$warning_count

mysqli_warning_count

(PHP 5)

mysqli::$warning_count -- mysqli_warning_countReturns the number of warnings from the last query for the given link

Descrierea

Stil obiect-orientat

Stil procedural

int mysqli_warning_count ( mysqli $link )

Returns the number of warnings from the last query in the connection.

Notă:

For retrieving warning messages you can use the SQL command SHOW WARNINGS [limit row_count].

Parametri

link

Numai stilul procedural: Un identificator al legăturii întors de mysqli_connect() sau mysqli_init()

Valorile întoarse

Number of warnings or zero if there are no warnings.

Exemple

Example #1 $mysqli->warning_count example

Stil obiect-orientat

<?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();
}

$mysqli->query("CREATE TABLE myCity LIKE City");

/* a remarkable city in Wales */
$query "INSERT INTO myCity (CountryCode, Name) VALUES('GBR',
        'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')"
;

$mysqli->query($query);

if (
$mysqli->warning_count) {
    if (
$result $mysqli->query("SHOW WARNINGS")) {
        
$row $result->fetch_row();
        
printf("%s (%d): %s\n"$row[0], $row[1], $row[2]);
        
$result->close();
    }
}

/* close connection */
$mysqli->close();
?>

Stil procedural

<?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();
}

mysqli_query($link"CREATE TABLE myCity LIKE City");

/* a remarkable long city name in Wales */
$query "INSERT INTO myCity (CountryCode, Name) VALUES('GBR',
        'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')"
;

mysqli_query($link$query);

if (
mysqli_warning_count($link)) {
    if (
$result mysqli_query($link"SHOW WARNINGS")) {
        
$row mysqli_fetch_row($result);
        
printf("%s (%d): %s\n"$row[0], $row[1], $row[2]);
        
mysqli_free_result($result);
    }
}

/* close connection */
mysqli_close($link);
?>

Exemplele de mai sus vor afișa:

Warning (1264): Data truncated for column 'Name' at row 1

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