International PHP Conference 2015

mysqli_stmt::fetch

mysqli_stmt_fetch

(PHP 5)

mysqli_stmt::fetch -- mysqli_stmt_fetchFetch results from a prepared statement into the bound variables

Beschreibung

Objektorientierter Stil

bool mysqli_stmt::fetch ( void )

Prozeduraler Stil

bool mysqli_stmt_fetch ( mysqli_stmt $stmt )

Fetch the result from a prepared statement into the variables bound by mysqli_stmt_bind_result().

Hinweis:

Note that all columns must be bound by the application before calling mysqli_stmt_fetch().

Hinweis:

Data are transferred unbuffered without calling mysqli_stmt_store_result() which can decrease performance (but reduces memory cost).

Parameter-Liste

stmt

Nur bei prozeduralem Aufruf: ein von mysqli_stmt_init() zurückgegebenes Statementobjekt.

Rückgabewerte

Rückgabewerte
Value Description
TRUE Success. Data has been fetched
FALSE Error occurred
NULL No more rows/data exists or data truncation occurred

Beispiele

Beispiel #1 Objektorientierter Stil

<?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 Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5";

if (
$stmt $mysqli->prepare($query)) {

    
/* execute statement */
    
$stmt->execute();

    
/* bind result variables */
    
$stmt->bind_result($name$code);

    
/* fetch values */
    
while ($stmt->fetch()) {
        
printf ("%s (%s)\n"$name$code);
    }

    
/* close statement */
    
$stmt->close();
}

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

Beispiel #2 Prozeduraler Stil

<?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 Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5";

if (
$stmt mysqli_prepare($link$query)) {

    
/* execute statement */
    
mysqli_stmt_execute($stmt);

    
/* bind result variables */
    
mysqli_stmt_bind_result($stmt$name$code);

    
/* fetch values */
    
while (mysqli_stmt_fetch($stmt)) {
        
printf ("%s (%s)\n"$name$code);
    }

    
/* close statement */
    
mysqli_stmt_close($stmt);
}

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

Die obigen Bespiele erzeugen folgende Ausgabe:

Rockford (USA)
Tallahassee (USA)
Salinas (USA)
Santa Clarita (USA)
Springfield (USA)

Siehe auch

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