function core分析

function dstrpos($string, $arr, $returnvalue = false) {
    if(empty($string)) return false;  // 做检测 是否为空
    foreach((array)$arr as $v) {
        if(strpos($string, $v) !== false) {
            $return = $returnvalue ? $v : true;
            return $return;
        }
    }
    return false;
}

三个参数 被检测的string, 是否在其中的arr, 是否返回其值 和 true false。

 

function checkrobot($useragent = '') {   
    static $kw_spiders = array('bot', 'crawl', 'spider' ,'slurp', 'sohu-search', 'lycos', 'robozilla');
    static $kw_browsers = array('msie', 'netscape', 'opera', 'konqueror', 'mozilla');

    $useragent = strtolower(empty($useragent) ? $_SERVER['HTTP_USER_AGENT'] : $useragent);
    if(strpos($useragent, 'http://') === false && dstrpos($useragent, $kw_browsers)) return false;
    if(dstrpos($useragent, $kw_spiders)) return true;
    return false;
}

检测是否是机器人访问

function dstripslashes($string) {
    if(empty($string)) return $string;
    if(is_array($string)) {
        foreach($string as $key => $val) {
            $string[$key] = dstripslashes($val);
        }
    } else {
        $string = stripslashes($string);
    }
    return $string;
}

去除转义字符

 

function daddslashes($string, $force = 1) {
    if(is_array($string)) {
        $keys = array_keys($string);
        foreach($keys as $key) {
            $val = $string[$key];
            unset($string[$key]);
            $string[addslashes($key)] = daddslashes($val, $force);
        }
    } else {
        $string = addslashes($string);
    }
    return $string;
}

添加转义字符

 

function dsetcookie($var, $value = '', $life = 0, $prefix = 1, $httponly = false) {

    global $_G;

    $config = $_G['config']['cookie'];

    $_G['cookie'][$var] = $value;
    $var = ($prefix ? $config['cookiepre'] : '').$var;
    $_COOKIE[$var] = $value;

    if($value == '' || $life < 0) {
        $value = '';
        $life = -1;
    }

    if(defined('IN_MOBILE')) {
        $httponly = false;
    }

    $life = $life > 0 ? getglobal('timestamp') + $life : ($life < 0 ? getglobal('timestamp') - 31536000 : 0);
    $path = $httponly && PHP_VERSION < '5.2.0' ? $config['cookiepath'].'; HttpOnly' : $config['cookiepath'];

    $secure = $_SERVER['SERVER_PORT'] == 443 ? 1 : 0;
    if(PHP_VERSION < '5.2.0') {
        setcookie($var, $value, $life, $path, $config['cookiedomain'], $secure);
    } else {
        setcookie($var, $value, $life, $path, $config['cookiedomain'], $secure, $httponly);
    }
}

设置cookie

 

function getglobal($key, $group = null) {
    global $_G;
    $key = explode('/', $group === null ? $key : $group.'/'.$key);
    $v = &$_G;
    foreach ($key as $k) {
        if (!isset($v[$k])) {
            return null;
        }
        $v = &$v[$k];
    }
    return $v;
}

获取$_G中变量

 

function setglobal($key , $value, $group = null) {
    global $_G;
    $key = explode('/', $group === null ? $key : $group.'/'.$key);
    $p = &$_G;
    foreach ($key as $k) {
        if(!isset($p[$k]) || !is_array($p[$k])) {
            $p[$k] = array();
        }
        $p = &$p[$k];
    }
    $p = $value;
    return true;
}

设置$_G变量属性

function libfile($libname, $folder = '') {
    $libpath = '/source/'.$folder;
    if(strstr($libname, '/')) {
        list($pre, $name) = explode('/', $libname);
        $path = "{$libpath}/{$pre}/{$pre}_{$name}";
    } else {
        $path = "{$libpath}/{$libname}";
    }
    return preg_match('/^[\w\d\/_]+$/i', $path) ? realpath(DISCUZ_ROOT.$path.'.php') : false;
}
加载source下面文件