mysqli_result::fetch_all

mysqli_fetch_all

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

mysqli_result::fetch_all -- mysqli_fetch_all — Récupère toutes les lignes de résultats dans un tableau associatif, numérique, ou les deux

Description

Style orienté objet

public mysqli_result::fetch_all(int $mode = MYSQLI_NUM): array

Style procédural

mysqli_fetch_all(mysqli_result $result, int $mode = MYSQLI_NUM): array

Retourne un tableau deux dimensionnel de tous les résultats sous forme d'un tableau associatif, numérique, ou les deux.

Note:
Antérieur à PHP 8.1.0, disponible uniquement avec mysqlnd.

Liste de paramètres

result: Style procédural uniquement : Un objet mysqli_result retourné par mysqli_query(), mysqli_store_result(), mysqli_use_result(), ou mysqli_stmt_get_result().
mode: Ce paramètre optionnel est une constante, qui indique le type de tableau qui doit être produit à partir du résultat. Les valeurs possibles sont les constantes MYSQLI_ASSOC, MYSQLI_NUM, ou MYSQLI_BOTH.

Valeurs de retour

Retourne un tableau associatif ou numérique contenant les lignes de résultat.

Historique

Version	Description
8.1.0	Désormais aussi disponible lors de la liaison avec libmysqlclient.

Exemples

Exemple #1 mysqli_result::fetch_all() example

Style orienté objet

<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$result = $mysqli->query("SELECT Name, CountryCode FROM City ORDER BY ID LIMIT 3");
$rows = $result->fetch_all(MYSQLI_ASSOC);
foreach ($rows as $row) {
    printf("%s (%s)\n", $row["Name"], $row["CountryCode"]);
}

Style procédural

<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = mysqli_connect("localhost", "my_user", "my_password", "world");
$result = mysqli_query($mysqli, "SELECT Name, CountryCode FROM City ORDER BY ID LIMIT 3");
$rows = mysqli_fetch_all($result, MYSQLI_ASSOC);
foreach ($rows as $row) {
    printf("%s (%s)\n", $row["Name"], $row["CountryCode"]);
}

Les exemples ci-dessus vont afficher :

Kabul (AFG)
Qandahar (AFG)
Herat (AFG)

Voir aussi

mysqli_fetch_array() - Récupère la ligne suivante d'un ensemble de résultats sous forme de tableau associatif, numérique ou les deux
mysqli_fetch_column() - Récupère une seule colonne de la ligne suivante d'un jeu de résultats
mysqli_query() - Exécute une requête sur la base de données

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User Contributed Notes 5 notes

down

jcastro at eftec dot cl ¶

9 years ago

I tested using "fetch all" versus "while / fetch array" and :

fetch-all uses less memory (but not for so much).

In my case (test1 and test2): 147008,262848 bytes (fetch-all) versus 147112,262888 bytes (fetch-array & while.

So, about the memory, in both cases are the same.

However, about the performance
My test takes :350ms (worst case) using fetch-all, while it takes 464ms (worst case) using fetch-array, or about 35% worst using fetch array and a while cycle.

So, using fetch-all, for a normal code that returns a moderate amount of information is :
a) cleaner (a single line of code)
b) uses less memory (about 0.01% less)
c) faster.

php 5.6 32bits, windows 8.1 64bits

down

darek334 at gazeta dot pl ¶

1 year ago

be careful fetch_all(MYSQLI_ASSOC ) returns an array in the form
<?php
array(0 => array(...row...), 1 => array(...row...) .... ), even if is one row...
?>
not compared to fetch_assoc() which returns one array of the result in form:
<?php
array(...row...)
?>

down

mail2magvay at rambler dot ru ¶

5 years ago

By the way, this case pretty work's too:

$services = $mysqli->query("SELECT * FROM table1");

if($services && $services->num_rows>0){
    $services->fetch_all(MYSQLI_ASSOC);
}

foreach($services as $service){
    echo $service; //work properly, cause it implements Iterator  
}

That's mean in this case $services is a valid array (or empty array)

down

m dot amiot at otak-arts dot com ¶

12 years ago

If you really need this function, you can just extend the mysqli_result class with a function like this one.

<?php
        public function fetch_all($resulttype = MYSQLI_NUM)
        {
            if (method_exists('mysqli_result', 'fetch_all')) # Compatibility layer with PHP < 5.3
                $res = parent::fetch_all($resulttype);
            else
                for ($res = array(); $tmp = $this->fetch_array($resulttype);) $res[] = $tmp;

            return $res;
        }
?>

down

-2

andrey at php dot net ¶

14 years ago

Return value changed in 5.3.3 - between 5.3.0 and 5.3.2 (incl.) when the result set was empty NULL was returned. 5.3.3+ returns an empty array.
Also, mysqli_fetch_all works only for buffered result sets, which are the default for mysqli_query. MYSQLI_USE_RESULT will be supported in 5.3.4+
However, it makes little sense to use it this way, materialising unbuffered sets. In this case choose STORE_RESULT, and fetch_all won't copy the data, but reference it, as it is stored already in mysqlnd.

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