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Package mecab
Short Description MeCab binding using FFI
License BSD-2-Clause
Homepage https://github.com/ranvis/php-mecab-ffi/blob/master/README.md
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Informations about the package mecab
PHP-MeCab-FFI
MeCab binding using FFI.
- Changelog
License
BSD 2-Clause License
This library contains a part of MeCab interface definitions, which is licensed under BSD 3-Clause License as stated there.
Installation
First make sure you have enabled FFI extension, which is bundled with PHP. Then execute the Composer command:
composer require "ranvis/mecab:^0.3"
Make sure you have installed MeCab 0.996 (or later compatible version) on your system along with the dictionary. On Windows and some Linux distros, there should be a pre-built package.
Last but not least, if you are going to use the library from non-CLI environment such as web server, ffi.enable=true instead of the restricted default ffi.enable=preload must be set in the system INI configuration used by the SAPI.
Example Usage
Preloading Dynamic Library
Loading dynamic library using script via FFI extension has a small overhead compared with native PHP extension. This can be mitigated by using FFI's preload feature. With preloading, daemon-like SAPI such as FPM can preprocess initialization of the library and reuse it afterwards.
Preload using ffi.preload
To make use of this, we need to generate a header file for MeCab once.
Run bundled gen_mecab_preloader command with the destination (and MeCab library name/path).
Then set ffi.preload ini value to point to the file.
(The header file may have to be regenerated in case this library is largely updated.)
Now to see if it works, we use CLI to run the following script.
Notice that MeCab\Env is now instantiated with the MeCab\Env::fromScope() static method instead of a new operator, to take advantage of preloading.
If your PHP is running in daemon-like style like FPM, restart the daemon process to take effect.
Preload using opcache.preload
Note: OPcache's preloading is not supported in Windows. (gh#4999)
Another way of preloading is to use OPcache's one.
OPcache also has a feature to preload classes that you use often.
FFI can be initialized during this step as well, provided that opcache.preload_user is not set, or set as the current system user
on PHP 8.3 and later. (Usually it is not set.)
In the PHP script specified in opcache.preload ini value, call MeCab\Env::preload() as follows:
And then on the actual script, call MeCab\Env::fromScope() to instantiate like the former example.
While this looks simpler than the former way, a header file will be silently created on the system's temporary directory everytime OPcache's preloading triggers; since FFI doesn't allow in-memory interface definitions for preloading as of PHP 8.3.
All versions of mecab with dependencies
ext-ffi Version *