PHP: Hypertext Preprocessor (original) (raw)

mysqli_result::fetch_all

mysqli_fetch_all

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

mysqli_result::fetch_all -- mysqli_fetch_all — Fetch all result rows as an associative array, a numeric array, or both

Description

Object-oriented style

Note:

Prior to PHP 8.1.0, available only withmysqlnd.

Return Values

Returns an array of associative or numeric arrays holding result rows.

Changelog

Examples

Example #1 mysqli_result::fetch_all() example

Object-oriented style

`<?php

mysqli_report

(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); mysqli=newmysqli("localhost","myuser","mypassword","world");mysqli = new mysqli("localhost", "my_user", "my_password", "world");mysqli=newmysqli("localhost","myu​ser","myp​assword","world");result = mysqli−>query("SELECTName,CountryCodeFROMCityORDERBYIDLIMIT3");mysqli->query("SELECT Name, CountryCode FROM City ORDER BY ID LIMIT 3");mysqli−>query("SELECTName,CountryCodeFROMCityORDERBYIDLIMIT3");rows = $result->fetch_all(MYSQLI_ASSOC);
foreach ($rows as $row) {
printf("%s (%s)\n", row["Name"],row["Name"], row["Name"],row["CountryCode"]);
}`

Procedural style

`<?php

mysqli_report

(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); mysqli=mysqliconnect("localhost","myuser","mypassword","world");mysqli = mysqli_connect("localhost", "my_user", "my_password", "world");mysqli=mysqlic​onnect("localhost","myu​ser","myp​assword","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["Name"], row["Name"],row["CountryCode"]);
}`

The above examples will output:

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

See Also

• mysqli_fetch_array() - Fetch the next row of a result set as an associative, a numeric array, or both
• mysqli_fetch_column() - Fetch a single column from the next row of a result set
• mysqli_query() - Performs a query on the database

Found A Problem?

jcastro at eftec dot cl ¶

10 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

`

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...) ?>

mail2magvay at rambler dot ru ¶

5 years ago

`By the way, this case pretty work's too: services=services = 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)

`

m dot amiot at otak-arts dot com ¶

13 years ago

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

`

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.