Rechercher une fonction PHP

SQLite3::createFunction

Contents

(PHP 5 >= 5.3.0, PHP 7)

SQLite3::createFunction — Registers a PHP function for use as an SQL scalar function

Description

public SQLite3::createFunction ( string $name , mixed $callback [, int $argument_count = -1 [, int $flags = 0 ]] ) : bool

Registers a PHP function or user-defined function for use as an SQL scalar function for use within SQL statements.

PHP: SQLite3::createFunction - Manual Home of Manuel PHP  Contents Haut

Parameters

name

Name of the SQL function to be created or redefined.

callback

The name of a PHP function or user-defined function to apply as a callback, defining the behavior of the SQL function.

This function need to be defined as:

callback ( mixed $value1 [, mixed $... ] ) : mixed
value1

The first argument passed to the SQL function.

...

Further arguments passed to the SQL function.

argument_count

The number of arguments that the SQL function takes. If this parameter is -1, then the SQL function may take any number of arguments.

flags

A bitwise conjunction of flags. Currently, only SQLITE3_DETERMINISTIC is supported, which specifies that the function always returns the same result given the same inputs within a single SQL statement.

PHP: SQLite3::createFunction - Manual Home of Manuel PHP  Contents Haut

Return Values

Returns TRUE upon successful creation of the function, FALSE on failure.

PHP: SQLite3::createFunction - Manual Home of Manuel PHP  Contents Haut

Changelog

Version Description
7.1.4 The flags parameter has been added.

PHP: SQLite3::createFunction - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 SQLite3::createFunction() example

<?php
function my_udf_md5($string) {
    return md5($string);
}

$db = new SQLite3('mysqlitedb.db');
$db->createFunction('my_udf_md5', 'my_udf_md5');

var_dump($db->querySingle('SELECT my_udf_md5("test")'));
?>

The above example will output something similar to:

string(32) "098f6bcd4621d373cade4e832627b4f6"

Find a PHP function

English translation

You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.

If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.

Thank you in advance.

Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-sqlite3.createfunction.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut