This small extension provides bindings to use the Chromium Compact Language Detector (http://code.google.com/p/chromium-compact-language-detector/) in PHP.

1. Chcek out cld2 (Compact Language Detector 2) with svn checkout http://cld2.googlecode.com/svn/trunk/ cld2
2. cd cld2/internal
3. run chmod +x ./compile_libs.sh followed by ./compile_libs.sh
4. cd ../../
5. Checkout Chromium Language Detector with hg clone https://code.google.com/p/chromium-compact-language-detector
6. cd chromium-compact-language-detector
7. Edit both setup.py and setup_full.py: edit CLD2_PATH to point to where you checked out the CLD2 sources.
8. Run ./build.sh
9. Checkout this project
10. Run phpize && ./configure --with-libcld-dir=... && make && sudo make install
11. Add extension=cld.so to your php.ini

<?php
var_export(CLD\detect("Drüben hinterm Dorfe wohnt ein Leiermann. Und mit starren Fingern spielt er was er kann"));
var_export(CLD\detect("日[の]本([の]国", false, true, null, CLD\Language::JAPANESE, CLD\Encoding::JAPANESE_EUC_JP));

<?php
$detector = new CLD\Detector();
var_export($detector->detectLanguage('Drüben hinterm Dorfe wohnt ein Leiermann. Und mit starren Fingern spielt er was er kann'));

$detector->setLanguageHint(CLD\Language::JAPANESE);
$detector->setEncodingHint(CLD\Encoding::JAPANESE_EUC_JP);
$detector->detectLanguage("日[の]本([の]国", false);

will return

array (
  0 =>
  array (
    'name' => 'GERMAN',
    'code' => 'de',
    'reliable' => true,
    'bytes' => 90,
  ),
)
array (
  0 =>
  array (
    'name' => 'JAPANESE',
    'code' => 'ja',
    'reliable' => true,
    'bytes' => 22,
  ),
  1 =>
  array (
    'name' => 'CHINESE',
    'code' => 'zh',
    'reliable' => true,
    'bytes' => 22,
  ),
)