Example PHP command-line application based on Symlex Core
This application is compatible with PHP 7.1+ with the curl extension enabled.
Clone this repository to a local directory and run composer:
git clone https://github.com/symlex/stream-sampler.git cd stream-sampler composer update
Alternatively you can run composer to create a new project from the latest stable release and fetch external dependencies:
composer create-project symlex/stream-sampler my-stream-sampler
Composer will ask for config values to generate
app/config/parameters.yml for you.
YAML files located in
app/config configure the app based on parameters and services.
The main config file is
It randomly returns a representative sample of k items from a stream of values with unknown and possibly very large length. The implementation relies on Algorithm R, which has a complexity of O(N). See https://en.wikipedia.org/wiki/Reservoir_sampling
app/console sample [options] Options: -i, --input[=INPUT] Input source (stdin, random.org, internal) [default: "stdin"] -s, --size[=SIZE] Sample size (1 - 2000) [default: 5] -V, --version Display the application version --ansi Force ANSI output --no-ansi Disable ANSI output
Note: If you're using random.org or the internal random character source, input data size will be 10 times the sample size. The maximum sample size is 2000.
# app/console sample -i internal -s 10 vgB4xtQTF3 # app/console sample -i random.org -s 8 FcojkJX1 # app/console sample < LICENSE TegcI # echo 'Pe7emsXm0EHfwAVx' | app/console sample Xe7es
Stream Sampler comes with a pre-configured PHPUnit environment that automatically executes tests found in
PHPUnit 7.5.1 by Sebastian Bergmann and contributors. ....... 7 / 7 (100%) Time: 431 ms, Memory: 8.00MB OK (7 tests, 16892 assertions)
See also: https://github.com/lastzero/test-tools (self-initializing database fixtures and dependency injection for unit tests)