php-tail 추가

vendor/php-extended/php-tail/README.md

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+# php-tail
+A smart way to tail files depending of the environment
+
+## Installation
+
+The installation of this library is made via composer.
+Download `composer.phar` from [their website](https://getcomposer.org/download/).
+Then add to your composer.json :
+
+```json
+	"require": {
+		...
+		"php-extended/php-tail": "^2.0",
+		...
+	}
+```
+
+Then run `php composer.phar update` to install this library.
+The autoloading of all classes of this library is made through composer's autoloader.
+
+## Usage
+
+The basic usage of this library is as follows :
+
+```php
+use PhpExtended\Tail\Tail;
+use PhpExtended\Tail\TailException;
+
+$filename = "/../path/to/my/file.ext";
+$tail = new Tail($filename);
+
+try
+{
+	// 10 is the number of lines you want
+	// 200 is the average number of chars on each line (optional)
+	// false is to force throwing exceptions (optional, use true if you want silent mode)
+	$lines = $tail->smart(10, 200, false);
+}
+catch(TailException $e)
+{
+	// do something is case it fails
+}
+
+```
+
+This library proposes 6 methods to tail a file, which can be more or less 
+performant depending on the context. They each follow the same signature 
+(see sample code above).
+
+Those methods are :
+- `naive` : Loads the whole file into php, then retains only the last lines
+- `cheat` : Uses underlying unix `tail -n` function
+- `single` : Uses a signle byte buffer to read backwards the file
+- `simple` : Uses a fixed size buffer to read backwards the file
+- `dynamic` : Uses a dynamically sized buffer to read backwards the file
+- `smart` : Tries to choose the best among those five to be the fastest (recommanded)
+
+This library is inspired from this [specific stackoverflow topic](http://stackoverflow.com/questions/15025875/what-is-the-best-way-in-php-to-read-last-lines-from-a-file/15025877).
+
+
+## License
+MIT (See [license file](LICENSE)).