Manuel PHP

SQLite3
PHP Manual

SQLite3::createFunction

(No version information available, might be only in CVS)

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

Description

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

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

Liste de paramètres

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.

Valeurs de retour

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

Exemples

Exemple #1 SQLite3::createFunction() example

  1. <?php
  2. function my_udf_md5($string) { 
  3.    return md5($string);  
  4. }  
  5.  
  6. $db = new SQLite3('mysqlitedb.db');  
  7. $db->createFunction('my_udf_md5', 'my_udf_md5');  
  8.  
  9. var_dump($db->querySingle('SELECT my_udf_md5("test")'));  
  10. ?> 

L'exemple ci-dessus va afficher quelque chose de similaire à :

string(32) "098f6bcd4621d373cade4e832627b4f6"

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