SQLite3::createFunction

(PHP 5 >= 5.3.0, PHP 7)

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

Descrierea

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

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

Parametri

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.
argument_count: The number of arguments that the SQL function takes. If this parameter is negative, then the SQL function may take any number of arguments.

Valorile întoarse

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

Exemple

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")'));
?>

Exemplul de mai sus va afișa ceva similar cu:

string(32) "098f6bcd4621d373cade4e832627b4f6"