International PHP Conference Munich 2021

mysqli_result::fetch_all

mysqli_fetch_all

(PHP 5 >= 5.3.0, PHP 7)

mysqli_result::fetch_all -- mysqli_fetch_allRécupère 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.

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.

Driver MySQL Natif uniquement

Disponible uniquement avec mysqlnd.

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");
$rows mysqli_fetch_all($resultMYSQLI_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() - Retourne une ligne de résultat sous la forme d'un tableau associatif, d'un tableau indexé, ou les deux
  • mysqli_query() - Exécute une requête sur la base de données

add a note add a note

User Contributed Notes 4 notes

up
85
jcastro at eftec dot cl
6 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
up
4
mail2magvay at rambler dot ru
2 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)
up
8
m dot amiot at otak-arts dot com
9 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;
        }
?>
up
2
andrey at php dot net
10 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.
To Top