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function conWrite($filename, $content){	$filename_lock = $filename.'.lock';	while(1) {		if(file_exists($filename_lock)) {			usleep(1000);		} else {			touch($filename_lock);//加锁			$f = fopen($filename, 'w');			fwrite($f,$content);			fclose($f);			unlink($filename_lock);			break;		}	}	if(file_exists($filename_lock)) {		unlink($filename_lock);	}}

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