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Intermediate English

At this level of proficiency, the online lessons will revolve around conversational topics that reflect concerns and interests of students, such as sports or pop culture. The criteria that determine the level of proficiency executed in this lesson plan reflect skills assessed for the appropriate age group.

Express It Right

Express It Right exposes learners' to appropriate idiomatic expressions as used in different discourse settings.

Talk About It

Using articles found online and in newspapers and magazines, Talk About It strengthens learners reading comprehension by letting them discuss and form opinions on what they read.

Hands-On English

Hands-On English gives learners formal instruction on the structure of English sentences. This course focuses on teaching grammar rules.

Survival English

Survival English prepares learners to respond to different communication tasks such as apologizing, showing appreciation, and making suggestions.

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* * This version may have been modified pursuant * to the GNU General Public License, and as distributed it includes or * is derivative of works licensed under the GNU General Public License or * other free or open source software licenses. * See LICENSE for more details. * Proxy Detector v0.1 * copyrights by: Daantje Eeltink (me@daantje.nl) * http://www.daantje.nl * * first build: Mon Sep 18 21:43:48 CEST 2006 * last build: Tue Sep 19 10:37:12 CEST 2006 * * Description: * This class can detect if a visitor uses a proxy server by scanning the * headers returned by the user client. When the user uses a proxy server, * most of the proxy servers alter the header. The header is returned to * PHP in the array $_SERVER. * * License: * GPL v2 licence. (http://www.gnu.org/copyleft/gpl.txt) * * Support: * If you like this class and find it usefull, please donate one or two * coins to my PayPal account me@daantje.nl * * Todo: * Add open proxy black list scan. */ class proxy_detector { /** * CONSTRUCTOR * Set defaults... */ function proxy_detector() { $this->config = array(); $this->lastLog = ""; //set default headers $this->scan_headers = array( 'HTTP_VIA', 'HTTP_X_FORWARDED_FOR', 'HTTP_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_FORWARDED', 'HTTP_CLIENT_IP', 'HTTP_FORWARDED_FOR_IP', 'VIA', 'X_FORWARDED_FOR', 'FORWARDED_FOR', 'X_FORWARDED', 'FORWARDED', 'CLIENT_IP', 'FORWARDED_FOR_IP', 'HTTP_PROXY_CONNECTION' ); } /** * VOID setHeader( STRING $trigger ) * Set new header trigger... */ function setHeader($trigger) { $this->scan_headers[] = $trigger; } /** * ARRAY $triggers = getHeaders( VOID ) * Get all triggers in one array */ function getHeaders() { return $this->scan_headers; } /** * VOID setConfig( STRING $key, STRING $value) * Set config line... */ function setConfig($key, $value) { $this->config[$key] = $value; } /** * MIXED $config = getConfig( [STRING $key] ) * Get all config in one array, or only one config value as a string. */ function getConfig($key='') { if ($key) return $this->config[$key]; else return $this->config; } /** * STRING $log = getLog( VOID ) * Get last logged information. Only works AFTER calling detect()! */ function getLog() { return $this->lastLog; } /** * BOOL $proxy = detect( VOID ) * Start detection and return true if a proxy server is detected... */ function detect() { $log = ""; //scan all headers foreach ($this->scan_headers as $i) { //proxy detected? lets log... if ($_SERVER[$i]) $log.= "trigger $i: " . $_SERVER[$i] . "\n"; } //let's do something... if ($log) { $log = $this->lastLog = date("Y-m-d H:i:s") . "\nDetected proxy server: " . gethostbyaddr($_SERVER['REMOTE_ADDR']) . " ({$_SERVER['REMOTE_ADDR']})\n" . $log; //write to file $f = $this->getConfig('LOG_FILE'); if ($f) { if (is_writable($f)) { $fp = fopen($f, 'a'); fwrite($fp, "$log\n"); fclose($fp); } else { die("Fatal Error: Couldn't write to file: '$f'
Please check if the path exists and is writable for the webserver or php..."); } } //done return true; } //nope, no proxy was logged... return false; } }