GÉNÉRER UN LOG AU FORMAT APACHE POUR FAIRE DES STATISTIQUES PERSONNALISÉES

/* EXEMPLE */
ob_start("ob_gzhandler");

...

YMA_LogVisit('%Host-%Y-%m.log','./logs/',200);
ob_end_flush();

/* SOURCE */
function YMA_LogVisit($logFileName='%Host-%Y-%m.log',$logsFolder='./logs/',$responseHTTP='200')
	{
	$now = time();
	$output = '';
	
	$loggedData['IP'] = trim($_SERVER['REMOTE_ADDR']);
	
	$remoteAddr = gethostbyaddr($loggedData['IP']);
	// Parfois, il y a des caractères spéciaux, notamment NUL
	$remoteAddr = trim($remoteAddr,"\x00..\x1F");
	if (strlen($remoteAddr) > 120)
		{
		// Présence probable de caractères NUL
		$loggedData['REMOTE_ADDR'] = $loggedData['IP'];
		}
	else
		{
		$loggedData['REMOTE_ADDR'] = $remoteAddr;
		}
	$output .= $loggedData['REMOTE_ADDR'];
	
	$loggedData['HTTP_HOST'] = strtolower($_SERVER['HTTP_HOST']);
	if ($loggedData['HTTP_HOST'] == '') $loggedData['HTTP_HOST'] = strtolower($_SERVER["SERVER_NAME"]);
	$output .= ' '.$loggedData['HTTP_HOST'];
	
	$loggedData['TIMESTAMP'] = $now;
	// Decalage horaire en seconde
	$decalage = date('Z',$now);
	// En heures et minutes
	$decheure = abs(ceil($decalage / 3600));
	$decminute =  abs(ceil(abs($decalage) / 60)-($decheure * 60));
	// En heures avec 2 décimales, et signé
	$decalagehoraire = sprintf('%02d',$decheure).sprintf('%02d',$decminute);
	if ($decalage >= 0)
		{
		$decalagehoraire = '+'.$decalagehoraire;
		}
	else
		{
		$decalagehoraire = '-'.$decalagehoraire;
		}
	$output .= ' - ['.gmdate('d/M/Y:H:i:s',$now).' '.$decalagehoraire.']';
	
	$loggedData['REQUEST_METHOD'] = $_SERVER['REQUEST_METHOD'];
	$loggedData['REQUEST_URI'] = $_SERVER['REQUEST_URI'];
	$loggedData['SERVER_PROTOCOL'] = $_SERVER['SERVER_PROTOCOL'];
	$output .= ' "'.$loggedData['REQUEST_METHOD'].' '.$loggedData['REQUEST_URI'].' '.$loggedData['SERVER_PROTOCOL'].'"';
	
	$output .= ' '.$responseHTTP;
	
	if (ob_get_length() !== FALSE)
		{
		$loggedData['CONTENT_LENGTH'] = ob_get_length();
		$output .= ' '.$loggedData['CONTENT_LENGTH'];
		}
	else
		{
		$output .= ' -';
		}
		
	$loggedData['HTTP_REFERER'] = $_SERVER['HTTP_REFERER'];
	if ($loggedData['HTTP_REFERER'] != '')
		{
		$output .= ' "'.$loggedData['HTTP_REFERER'].'"';
		}
	else
		{
		$output .= ' "-"';
		}

	$loggedData['HTTP_USER_AGENT'] = $_SERVER['HTTP_USER_AGENT'];
	$output .= ' "'.$loggedData['HTTP_USER_AGENT'].'"';
	
	$output = trim($output)."\r\n";
	
	$loggedData['logFileName'] = strftime(str_replace('%Host',$loggedData['HTTP_HOST'],$logFileName),$now);
	$logPath = $logsFolder.$loggedData['logFileName'];
	
	if ($f = @fopen($logPath, 'ab')) {
		fwrite ($f, $output, strlen($output));
		fclose($f);
		}
	
	return $loggedData;
	}