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CHANGELOG.md

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Changelog

version 2.0 - February 4, 2014

version 2.0b (beta) - August 25, 2013

  • Added a new method to retrieve the source file version $browscap->getSourceVersion().
  • Added a safety feature to regenerate the cache file always when Browscap::CACHE_FILE_VERSION changes.
  • Updated source file download URLs to new temporary URLs.
  • Added new lines \n to the cache files for readability.
  • Default download URL is changed so it will get and parse the full file instead of 'standard'. ua-speed-tests shows that there is only a small performance difference between using those two versions.
  • Performance upgrades (see ua-speed-tests for performance tests):
    • 5 times faster for real user agents, with opcache on
    • 11 times faster for user agents that do not match anything, with opcache on
    • 3 times faster for real user agents, without using opcache
    • 5 times faster for user agents that do not match anything, without using opcache
    • Regular expression pattern matches are being grouped by version numbers. The matches are performed in two stages. 1 - standard regular expression match with numbers that differ across source file patterns replaced with single character wildcard match. 2 - a check is performed on found numeric values to see if any of the grouped values are an exact match. If not, then the searching process resumes. This is the main source of the speed optimization. It greatly reduces the source file size and greatly increases matching performance.
    • Data that is not required to perform matches or return results was removed from the cache files. That includes the source file match strings, which can be recreated from the regex ones, and a large set of browser name entries which were never used because they had parents. Decreasing the cache file size is very important for when you don't use any PHP opcache, because loading large data structures into PHP takes a very long time.
    • Arrays that are not used in foreach loops were serialized in the cache file. This also decreases the time it takes to load the cache file when not using opcache. It's generally a very bad idea to load large arrays with subarrays into PHP. Serializing does a great job when optimizing performance.
    • The above changes address performance issues brought up in #26
  • Bug fixes:
    • Fixed #35
    • Fixed #34
    • Fixed #33
    • Fixed #32
    • Bug #17 is resolved, although that was fixed even before.
    • Merged #25 - those are mainly comment changes but there are also two fixes for $browscap->clearProxySettings() method, which did not work properly when an optional $wrapper parameter was passed.
  • Added a new testing class that compares result of Browscap to get_browser() for as many browsers as possible and checks if there are any differences in parsing. It also compares the parsing speed (in a simplistic way, more advanced tests are available at https://github.com/quentin389/ua-speed-tests).

version 1.0

  • Initial version