yfix/yf

<?php

function load_db_class()
{
    static $_loaded_class;
    if ($_loaded_class) {
        return $_loaded_class;
    }
    $classes = [
        'db' => INCLUDE_PATH . 'classes/db.class.php',
        'yf_db' => YF_PATH . 'classes/yf_db.class.php',
    ];
    foreach ((array) $classes as $cl => $f) {
        if ( ! file_exists($f)) {
            continue;
        }
        require_once $f;
        if (class_exists($cl)) {
            $_loaded_class = $cl;
            return $_loaded_class;
        }
    }
    return false;
}
function db_t3($tbl_name = '')
{
    return db($tbl_name);
}
function db_t2($tbl_name = '')
{
    $_instance = &$GLOBALS[__FUNCTION__];
    if ($_instance === null) {
        $db_class = load_db_class();
        if ($db_class) {
            $_instance = new $db_class('mysql5', DB_PREFIX_T2);
            $_instance->connect(DB_HOST_T2, DB_USER_T2, DB_PSWD_T2, DB_NAME_T2, true);
        } else {
            $_instance = false;
        }
    }
    if ( ! is_object($_instance)) {
        return $tbl_name ? $tbl_name : new yf_missing_method_handler(__FUNCTION__);
    }
    return $tbl_name ? $_instance->_real_name($tbl_name) : $_instance;
}
function db_pf($tbl_name = '')
{
    $_instance = &$GLOBALS[__FUNCTION__];
    if ($_instance === null) {
        $db_class = load_db_class();
        if ($db_class) {
            $_instance = new $db_class('mysql5', DB_PREFIX_PF);
            $_instance->connect(DB_HOST_PF, DB_USER_PF, DB_PSWD_PF, DB_NAME_PF, true);
        } else {
            $_instance = false;
        }
    }
    if ( ! is_object($_instance)) {
        return $tbl_name ? $tbl_name : new yf_missing_method_handler(__FUNCTION__);
    }
    return $tbl_name ? $_instance->_real_name($tbl_name) : $_instance;
}
function db_rr($tbl_name = '')
{
    $_instance = &$GLOBALS[__FUNCTION__];
    if ($_instance === null) {
        $db_class = load_db_class();
        if ($db_class) {
            $_instance = new $db_class('mysql5', 1, DB_PREFIX_RR);
            $_instance->connect(DB_HOST_RR, DB_USER_RR, DB_PSWD_RR, DB_NAME_RR, true);
        } else {
            $_instance = false;
        }
    }
    if ( ! is_object($_instance)) {
        return $tbl_name ? $tbl_name : new yf_missing_method_handler(__FUNCTION__);
    }
    return $tbl_name ? $_instance->_real_name($tbl_name) : $_instance;
}
function db_cr($tbl_name = '')
{
    $_instance = &$GLOBALS[__FUNCTION__];
    if ($_instance === null) {
        $db_class = load_db_class();
        if ($db_class) {
            $_instance = new $db_class('mysql5', DB_PREFIX_CR);
            $_instance->connect(DB_HOST_CR, DB_USER_CR, DB_PSWD_CR, DB_NAME_CR, true);
        } else {
            $_instance = false;
        }
    }
    if ( ! is_object($_instance)) {
        return $tbl_name ? $tbl_name : new yf_missing_method_handler(__FUNCTION__);
    }
    return $tbl_name ? $_instance->_real_name($tbl_name) : $_instance;
}
function db_m3($tbl_name = '')
{
    $_instance = &$GLOBALS[__FUNCTION__];
    if ($_instance === null) {
        $db_class = load_db_class();
        if ($db_class) {
            $_instance = new $db_class('mysql5', DB_PREFIX_MASTER);
            $_instance->connect(DB_HOST_MASTER, DB_USER_MASTER, DB_PSWD_MASTER, DB_NAME_MASTER, true);
        } else {
            $_instance = false;
        }
    }
    if ( ! is_object($_instance)) {
        return $tbl_name ? $tbl_name : new yf_missing_method_handler(__FUNCTION__);
    }
    return $tbl_name ? $_instance->_real_name($tbl_name) : $_instance;
}
function db_master($tbl_name = '')
{
    return db_m3($tbl_name);
}
function db_slave($tbl_name = '')
{
    return db($tbl_name);
}