Rsi.php

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<?php

class Rsi{

  /**
   * Check if PHP is run from the command line.
   * @return bool
   */
  public static function commandLine(){
    return PHP_SAPI == 'cli';
  }
  /**
   * Check wether we are running on a Windows machine.
   * @return bool
   */
  public static function windows(){
    return strncasecmp(PHP_OS,'Win',3) == 0;
  }
  /**
   * Simple command line argument parser.
   * Supports values of form key=value (value is true when omitted). When the same key is encountered multiple times an array
   * will be returned.
   * @return array  Assoc.array with the key=value pairs from the command line arguments.
   */
  public static function parseArgs(){
    global $argc,$argv;

    $args = [];
    for($i = 1; $i < $argc; $i++){
      list($key,$value) = array_merge(explode('=',$argv[$i],2),[true]);
      if(array_key_exists($key,$args)){
        if(!is_array($args[$key])) $args[$key] = [$args[$key]];
        $args[$key][] = $value;
      }
      else $args[$key] = $value;
    }
    return $args;
  }
  /**
   * Check PHP version.
   * @param string $version  Version to compare to.
   * @return bool  True if the current PHP-version is greater or equal than the provided version.
   */
  public static function version($version){
    return version_compare(PHP_VERSION,$version,'>=');
  }
  /**
   * Script memory limit.
   * @return int  Maximum number of bytes.
   */
  public static function memoryLimit(){
    return \Rsi\Number::shorthandBytes(ini_get('memory_limit'));
  }
  /**
   * Check if a value is empty.
   * @param mixed $value
   * @return bool  True when empty.
   */
  public static function nothing($value){
    return is_array($value) ? !$value : !strlen($value);
  }

}