<?php
    require_once ( 'config.php' );
    function db_connect ( ) {
        global $config;
        $connection = new MySQLi ( $config [ 'db' ] [ 'host' ], $config [ 'db' ] [ 'username' ], $config [ 'db' ] [ 'password' ], $config [ 'db' ] [ 'name' ], $config [ 'db' ] [ 'port' ] );
        if ( $connection->connect_errno ) {
            die ( "Database connection failed." );
        }
        return $connection;
    }
    function db_prepare ( MySQLi $connection, string $query ) {
        if ( ! ( $statement = $connection -> prepare ( $query ) ) ) {
            die ( "Prepare failed: (" . $connection->errno . ") " . $connection->error );
        }
        return $statement;
    }
    function db_bind ( MySQLi_stmt $statement, array $params ) {
        if ( ! call_user_func_array ( array ( $statement, "bind_param" ), array_merge ( $params [ 0 ], $params [ 1 ] ) ) ) {
            die ( "Binding parameters failed: (" . $statement->errno . ") " . $statement->error );
        }
    }
    function db_execute ( $statement ) {
        if ( ! $statement->execute ( ) ) {
            die ( "Execute failed: (" . $statement->errno . ") " . $statement->error );
        }
    }
    function split_uri_array ( string $php_self, string $request_uri ) : Array {
        $uri = substr ( $request_uri, strlen ( substr ( $php_self, 0, strrpos ( $php_self, 'index.php' ) ) ), strlen ( $request_uri ) - strlen ( substr ( $php_self, 0, strrpos ( $php_self, 'index.php' ) ) ) );
        $arr = Array ( );
        $last_arg_pos = 0;
        for ( $i = 1; $i < ( strlen ( $uri ) ) - 1; $i ++ ) {
            if ( substr ( $uri, $i, 1 ) == "/" && substr ( $uri, $i + 1, 1 ) != "/" && substr ( $uri, $i - 1, 1 ) != "/" ) {
                $arr [ ] = substr ( $uri, $last_arg_pos, $i - $last_arg_pos);
                $last_arg_pos = $i + 1;
            }
        }
        $arr [ ] = substr ( $uri, $last_arg_pos, $i - $last_arg_pos + 1);
        return $arr;
    }
?>