GoLang SQLite3::createFunction

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PHP SQLite3::createFunction

PHP original manual for SQLite3::createFunction [ show | php.net ]


(PHP 5 >= 5.3.0, PHP 7)

SQLite3::createFunctionRegisters a PHP function for use as an SQL scalar function


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

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



Name of the SQL function to be created or redefined.


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


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


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.

Return Values

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


Version Description
PHP 7.1.4 The flags has been added.


Example #1 SQLite3::createFunction() example

function my_udf_md5($string) {

$db = new SQLite3('mysqlitedb.db');

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

The above example will output something similar to:

string(32) "098f6bcd4621d373cade4e832627b4f6"