Module: Php4r

Defined in:
lib/php4r.rb

Instance Method Summary collapse

Instance Method Details

#array(*ele) ⇒ Object

Array-function emulator.



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# File 'lib/php4r.rb', line 883

def array(*ele)
  return {} if ele.length <= 0
  
  if ele.length == 1 and ele.first.is_a?(Hash)
    return ele.first
  end
  
  return ele
end

#array_key_exists(key, arr) ⇒ Object 



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# File 'lib/php4r.rb', line 893

def array_key_exists(key, arr)
  if arr.is_a?(Hash)
    return arr.key?(key)
  elsif arr.is_a?(Array)
    return true if arr.index(key) != nil
    return false
  else
    raise "Unknown type of argument: '#{arr.class.name}'."
  end
end

#base64_decode(str) ⇒ Object 



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# File 'lib/php4r.rb', line 695

def base64_decode(str)
  return Base64.decode64(str.to_s)
end

#base64_encode(str) ⇒ Object 



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# File 'lib/php4r.rb', line 686

def base64_encode(str)
  #The strict-encode wont do corrupt newlines...
  if Base64.respond_to?("strict_encode64")
    return Base64.strict_encode64(str.to_s)
  else
    return Base64.encode64(str.to_s)
  end
end

#basename(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 677

def basename(filepath)
  splitted = filepath.to_s.split("/").last
  return false if !splitted
  
  ret = splitted.split(".")
  ret.delete(ret.last)
  return ret.join(".")
end

#call_user_func(*paras) ⇒ Object 



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# File 'lib/php4r.rb', line 6

def call_user_func(*paras)
  if paras[0].is_a?(String)
    send_paras = [paras[0].to_sym]
    send_paras << paras[1] if paras[1]
    send(*send_paras)
  elsif paras[0].is_a?(Array)
    send_paras = [paras[0][1].to_sym]
    send_paras << paras[1] if paras[1]
    paras[0][0].send(*send_paras)
  else
    raise "Unknown user-func: '#{paras[0].class.name}'."
  end
end

#chdir(dirname) ⇒ Object 



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# File 'lib/php4r.rb', line 591

def chdir(dirname)
  Dir.chdir(dirname)
end

#class_exists(classname) ⇒ Object 



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# File 'lib/php4r.rb', line 436

def class_exists(classname)
  begin
    Kernel.const_get(classname)
    return true
  rescue
    return false
  end
end

#count(array) ⇒ Object 



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# File 'lib/php4r.rb', line 607

def count(array)
  return array.length
end

#date(date_format, date_input = nil) ⇒ Object 



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# File 'lib/php4r.rb', line 660

def date(date_format, date_input = nil)
  if date_input == nil
    date_object = Time.now
  elsif date_input.respond_to?(:to_time)
    date_object = date_input.to_time
  elsif Php4r.is_numeric(date_input)
    date_object = Time.at(date_input.to_i)
  elsif date_input.is_a?(Time)
    date_object = date_input
  else
    raise "Unknown date given: '#{date_input}', '#{date_input.class.name}'."
  end
  
  date_format = date_format.gsub("Y", "%Y").gsub("y", "%y").gsub("m", "%m").gsub("d", "%d").gsub("H", "%H").gsub("i", "%M").gsub("s", "%S")
  return date_object.strftime(date_format)
end

#die(msg) ⇒ Object 



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# File 'lib/php4r.rb', line 459

def die(msg)
  print msg
  exit
end

#dirname(filename) ⇒ Object 



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# File 'lib/php4r.rb', line 587

def dirname(filename)
  File.dirname(filename)
end

#echo(string) ⇒ Object 



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# File 'lib/php4r.rb', line 603

def echo(string)
  print string
end

#empty(obj) ⇒ Object 



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# File 'lib/php4r.rb', line 904

def empty(obj)
  if obj.respond_to?("empty?")
    return obj.empty?
  elsif obj == nil
    return true
  else
    raise "Dont know how to handle object on 'empty': '#{obj.class.name}'."
  end
end

#explode(expl, strexp) ⇒ Object 



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# File 'lib/php4r.rb', line 583

def explode(expl, strexp)
  return strexp.to_s.split(expl)
end

#fclose(fp) ⇒ Object 



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# File 'lib/php4r.rb', line 516

def fclose(fp)
  fp.close
end

#fgets(fp, length = 4096) ⇒ Object 



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# File 'lib/php4r.rb', line 512

def fgets(fp, length = 4096)
  return fp.read(length)
end

#file_exists(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 386

def file_exists(filepath)
  return true if File.exists?(filepath.to_s.untaint)
  return false
end

#file_get_contents(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 330

def file_get_contents(filepath)
  filepath = filepath.to_s
  
  if http_match = filepath.match(/^http(s|):\/\/([A-z_\d\.]+)(|:(\d+))(\/(.+))$/)
    port = http_match[4].to_i if http_match[4].to_s.length > 0
    
    args = {
      :host => http_match[2]
    }
    
    if http_match[1] == "s"
      args[:ssl] = true
      args[:validate] = false
      
      if !port
        port = 443
      end
    end
    
    args[:port] = port if port
    
    require "http2"
    Http2.new(args) do |http|
      return http.get(http_match[5]).body
    end
  end
  
  return File.read(filepath.untaint)
end

#file_put_contents(filepath, content) ⇒ Object 



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# File 'lib/php4r.rb', line 322

def file_put_contents(filepath, content)
  File.open(filepath.untaint, "w") do |file|
    file.write(content)
  end
  
  return true
end

#fopen(filename, mode) ⇒ Object 



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# File 'lib/php4r.rb', line 480

def fopen(filename, mode)
  begin
    return File.open(filename, mode)
  rescue
    return false
  end
end

#foreach(element, &block) ⇒ Object

Foreach emulator.



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# File 'lib/php4r.rb', line 852

def foreach(element, &block)
  raise "No or unsupported block given." if !block.respond_to?(:call) or !block.respond_to?(:arity)
  arity = block.arity
  cname = element.class.name.to_s
  
  if element.is_a?(Array) or cname == "Array_enumerator"
    element.each_index do |key|
      if arity == 2
        block.call(key, element[key])
      elsif arity == 1
        block.call(element[key])
      else
        raise "Unknown arity: '#{arity}'."
      end
    end
  elsif element.is_a?(Hash)
    element.each do |key, val|
      if arity == 2
        block.call(key, val)
      elsif arity == 1
        block.call(val)
      else
        raise "Unknown arity: '#{arity}'."
      end
    end
  else
    raise "Unknown element: '#{element.class.name}'."
  end
end

#fputs(fp, str) ⇒ Object 



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# File 'lib/php4r.rb', line 498

def fputs(fp, str)
  begin
    fp.print str
  rescue
    return false
  end
  
  return true
end

#fread(fp, length = 4096) ⇒ Object 



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# File 'lib/php4r.rb', line 508

def fread(fp, length = 4096)
  return fp.read(length)
end

#fwrite(fp, str) ⇒ Object 



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# File 'lib/php4r.rb', line 488

def fwrite(fp, str)
  begin
    fp.print str
  rescue
    return false
  end
  
  return true
end

#gettext(string) ⇒ Object 



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# File 'lib/php4r.rb', line 146

def gettext(string)
  return GetText._(string)
end

#gzcompress(str, level = 3) ⇒ Object 



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# File 'lib/php4r.rb', line 816

def gzcompress(str, level = 3)
  require "zlib"
  
  zstream = Zlib::Deflate.new
  gzip_str = zstream.deflate(str.to_s, Zlib::FINISH)
  zstream.close
  
  return gzip_str
end

#gzuncompress(str, length = 0) ⇒ Object 



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# File 'lib/php4r.rb', line 826

def gzuncompress(str, length = 0)
  require "zlib"
  
  zstream = Zlib::Inflate.new
  plain_str = zstream.inflate(str.to_s)
  zstream.finish
  zstream.close
  
  return plain_str.to_s
end

#header(headerstr) ⇒ Object 



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# File 'lib/php4r.rb', line 283

def header(headerstr)
  match = headerstr.to_s.match(/(.*): (.*)/)
  if match
    key = match[1]
    value = match[2]
  else
    #HTTP/1.1 404 Not Found
    
    match_status = headerstr.to_s.match(/^HTTP\/[0-9\.]+ ([0-9]+) (.+)$/)
    if match_status
      key = "Status"
      value = match_status[1] + " " + match_status[2]
    else
      raise "Couldnt parse header."
    end
  end
  
  _kas.header(key, value) #This is for knjAppServer - knj.
  return true
end

#html_entity_decode(string) ⇒ Object 



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# File 'lib/php4r.rb', line 445

def html_entity_decode(string)
  string = Php4r.htmlspecialchars(string)
  string = string.gsub("&oslash;", "ø").gsub("&aelig;", "æ").gsub("&aring;", "å").gsub("&euro;", "€").gsub("#39;", "'").gsub("&amp;", "&").gsub("&gt;", ">").gsub("&lt;", "<").gsub("&quot;", '"').gsub("&#039;", "'")
  return string
end

#htmlspecialchars(string) ⇒ Object 



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# File 'lib/php4r.rb', line 189

def htmlspecialchars(string)
  return string.to_s.gsub(/&/, "&amp;").gsub(/\"/, "&quot;").gsub(/>/, "&gt;").gsub(/</, "&lt;")
end

#http_build_query(obj) ⇒ Object 



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# File 'lib/php4r.rb', line 193

def http_build_query(obj)
  return Php4r.http_build_query_rec("", obj)
end

#http_build_query_rec(orig_key, obj, first = true) ⇒ Object 



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# File 'lib/php4r.rb', line 197

def http_build_query_rec(orig_key, obj, first = true)
  url = ""
  first_ele = true
  
  if obj.is_a?(Array)
    ele_count = 0
    
    obj.each do |val|
      orig_key_str = "#{orig_key}[#{ele_count}]"
      val = "#<Model::#{val.table}::#{val.id}>" if val.respond_to?("is_knj?")
      
      if val.is_a?(Hash) or val.is_a?(Array)
        url << Php4r.http_build_query_rec(orig_key_str, val, false)
      else
        url << "&" if !first or !first_ele
        url << "#{Php4r.urlencode(orig_key_str)}=#{Php4r.urlencode(val)}"
      end
      
      first_ele = false if first_ele
      ele_count += 1
    end
  elsif obj.is_a?(Hash)
    obj.each do |key, val|
      if first
        orig_key_str = key
      else
        orig_key_str = "#{orig_key}[#{key}]"
      end
      
      val = "#<Model::#{val.table}::#{val.id}>" if val.respond_to?("is_knj?")
      
      if val.is_a?(Hash) or val.is_a?(Array)
        url << Php4r.http_build_query_rec(orig_key_str, val, false)
      else
        url << "&" if !first or !first_ele
        url << "#{Php4r.urlencode(orig_key_str)}=#{Php4r.urlencode(val)}"
      end
      
      first_ele = false if first_ele
    end
  else
    raise "Unknown class: '#{obj.class.name}'."
  end
  
  return url
end

#include_once(filename) ⇒ Object 



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# File 'lib/php4r.rb', line 595

def include_once(filename)
  require filename
end

#ip2long(ip) ⇒ Object 



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# File 'lib/php4r.rb', line 735

def ip2long(ip)
  return IPAddr.new(ip).to_i
end

#is_a(obj, classname) ⇒ Object 



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# File 'lib/php4r.rb', line 24

def is_a(obj, classname)
  classname = classname.to_s
  classname = "#{classname[0..0].upcase}#{classname[1..999]}"
  
  return true if obj.is_a?(classname)
  return false
end

#is_dir(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 372

def is_dir(filepath)
  begin
    return true if File.directory?(filepath)
  rescue
    return false
  end
  
  return false
end

#is_file(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 360

def is_file(filepath)
  begin
    if File.file?(filepath)
      return true
    end
  rescue
    return false
  end
  
  return false
end

#is_numeric(n) ⇒ Object 



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# File 'lib/php4r.rb', line 4

def is_numeric(n) Float n rescue false end

#isset(var) ⇒ Object 



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# File 'lib/php4r.rb', line 244

def isset(var)
  return false if var == nil or var == false
  return true
end

#json_decode(data, as_array = false) ⇒ Object 



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# File 'lib/php4r.rb', line 621

def json_decode(data, as_array = false)
  #FIXME: Should be able to return as object, which will break all projects using it without second argument...
  raise "String was not given to 'Php4r.json_decode'." if !data.is_a?(String)
  
  if Php4r.class_exists("Rho")
    return Rho::JSON.parse(data)        
  elsif Php4r.class_exists("JSON")  
    return JSON.parse(data)
  else
    raise "Could not figure out which JSON lib to use."
  end
end

#json_encode(obj) ⇒ Object 



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# File 'lib/php4r.rb', line 611

def json_encode(obj)
  if Php4r.class_exists("Rho")
    return Rho::JSON.generate(obj)
  elsif Php4r.class_exists("JSON")
    return JSON.generate(obj)
  else
    raise "Could not figure out which JSON lib to use."
  end
end

#ksort(hash) ⇒ Object

Sort methods.



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# File 'lib/php4r.rb', line 838

def ksort(hash)
  nhash = hash.sort do |a, b|
    a[0] <=> b[0]
  end
  
  newhash = {}
  nhash.each do |val|
    newhash[val[0]] = val[1][0]
  end
  
  return newhash
end

#long2ip(long) ⇒ Object

Thanks to this link for the following functions: snippets.dzone.com/posts/show/4509



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# File 'lib/php4r.rb', line 806

def long2ip(long)
  ip = []
  4.times do |i|
    ip.push(long.to_i & 255)
    long = long.to_i >> 8
  end
  
  ip.reverse.join(".")
end

#md5(string) ⇒ Object 



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# File 'lib/php4r.rb', line 278

def md5(string)
  require "digest"
  return Digest::MD5.hexdigest(string.to_s)
end

#memory_get_peak_usage ⇒ Object

Should return the peak usage of the running script, but I have found no way to detect this… Instead returns the currently memory usage.



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# File 'lib/php4r.rb', line 731

def memory_get_peak_usage
  return Php4r.memory_get_usage
end

#memory_get_usage ⇒ Object

Returns the scripts current memory usage.



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# File 'lib/php4r.rb', line 724

def memory_get_usage
  # FIXME: This only works on Linux at the moment, since we are doing this by command line - knj.
  memory_usage = `ps -o rss= -p #{Process.pid}`.to_i * 1024
  return memory_usage
end

#method_exists(obj, method_name) ⇒ Object 



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# File 'lib/php4r.rb', line 20

def method_exists(obj, method_name)
  return obj.respond_to?(method_name.to_s)
end

#microtime(get_as_float = false) ⇒ Object 



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# File 'lib/php4r.rb', line 638

def microtime(get_as_float = false)
  microtime = Time.now.to_f
  
  return microtime if get_as_float
  
  splitted = microtime.to_s.split(",")
  return "#{splitted[0]} #{splitted[1]}"
end

#mktime(hour = nil, min = nil, sec = nil, date = nil, month = nil, year = nil, is_dst = -1)) ⇒ Object 



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# File 'lib/php4r.rb', line 647

def mktime(hour = nil, min = nil, sec = nil, date = nil, month = nil, year = nil, is_dst = -1)
  cur_time = Time.new
  
  hour = cur_time.hour if hour == nil
  min = cur_time.min if min == nil
  sec = cur_time.sec if sec == nil
  date = cur_time.day if date == nil
  month = cur_time.month if month == nil
  year = cur_time.year if year == nil
  
  return Time.new(year, month, date, hour, min, sec).to_i
end

#move_uploaded_file(tmp_path, new_path) ⇒ Object 



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# File 'lib/php4r.rb', line 520

def move_uploaded_file(tmp_path, new_path)
  FileUtils.mv(tmp_path.untaint, new_path.untaint)
end

#nl2br(string) ⇒ Object 



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# File 'lib/php4r.rb', line 304

def nl2br(string)
  return string.to_s.gsub("\n", "<br />\n")
end

#number_format(number, precision = 2, seperator = ".", delimiter = ",") ⇒ Object

Returns the number as a formatted string.



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# File 'lib/php4r.rb', line 151

def number_format(number, precision = 2, seperator = ".", delimiter = ",")
  number = number.to_f if !number.is_a?(Float)
  precision = precision.to_i
  return sprintf("%.#{precision.to_s}f", number).gsub(".", seperator) if number < 1 and number > -1
  
  number = sprintf("%.#{precision.to_s}f", number).split(".")
  
  str = ""
  number[0].reverse.scan(/(.{1,3})/) do |match|
    if match[0] == "-"
      #This happens if the number is a negative number and we have reaches the minus-sign.
      str << match[0]
    else
      str << delimiter if str.length > 0
      str << match[0]
    end
  end
  
  str = str.reverse
  if precision > 0
    str << "#{seperator}#{number[1]}"
  end
  
  return str
end

#opendir(dirpath) ⇒ Object 



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# File 'lib/php4r.rb', line 464

def opendir(dirpath)
  res = {:files => [], :index => 0}
  Dir.foreach(dirpath) do |file|
    res[:files] << file
  end
  
  return res
end

#parse_str(str, hash) ⇒ Object 



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# File 'lib/php4r.rb', line 928

def parse_str(str, hash)
  str.to_s.split("&").each do |value|
    pos = value.index("=")
    
    if pos != nil
      name = value[0..pos-1]
      valuestr = value.slice(pos+1..-1)
      parse_str_name(hash, name, valuestr)
    end
  end
  
  return hash
end

#passthru(cmd) ⇒ Object

Execute an external program and display raw output.



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# File 'lib/php4r.rb', line 740

def passthru(cmd)
  if RUBY_ENGINE == "jruby"
    IO.popen4(cmd) do |pid, stdin, stdout, stderr|
      tout = Thread.new do
        begin
          stdout.sync = true
          stdout.each do |str|
            $stdout.print str
          end
        rescue => e
          $stderr.puts e.inspect
          $stderr.puts e.backtrace
        end
      end
      
      terr = Thread.new do
        begin
          stderr.sync = true
          stderr.each do |str|
            $stderr.print str
          end
        rescue => e
          $stderr.puts e.inspect
          $stderr.puts e.backtrace
        end
      end
      
      tout.join
      terr.join
    end
  else
    require "open3"
    Open3.popen3(cmd) do |stdin, stdout, stderr|
      tout = Thread.new do
        begin
          stdout.sync = true
          stdout.each do |str|
            $stdout.print str
          end
        rescue => e
          $stderr.puts e.inspect
          $stderr.puts e.inspect
        end
      end
      
      terr = Thread.new do
        begin
          stderr.sync = true
          stderr.each do |str|
            $stderr.print str
          end
        rescue => e
          $stderr.puts e.inspect
          $stderr.puts e.backtrace
        end
      end
      
      tout.join
      terr.join
    end
  end
  
  return nil
end

#pathinfo(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 699

def pathinfo(filepath)
  filepath = filepath.to_s
  
  dirname = File.dirname(filepath)
  dirname = "" if dirname == "."
  
  return {
    "dirname" => dirname,
    "basename" => Php4r.basename(filepath),
    "extension" => filepath.split(".").last,
    "filename" => filepath.split("/").last
  }
end

#print_r(argument, ret = false, count = 1) ⇒ Object 



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# File 'lib/php4r.rb', line 32

def print_r(argument, ret = false, count = 1)
  retstr = ""
  cstr = argument.class.to_s
  supercl = argument.class.superclass
  superstr = supercl.to_s if supercl
  
  if argument.respond_to?(:to_hash)
    argument_use = argument.to_hash
    
    retstr << "#{argument.class.name}{\n"
    argument_use.each do |key, val|
      i = 0
      while i < count
        retstr << "   "
        i += 1
      end
      
      if key.is_a?(Symbol)
        keystr = ":#{key.to_s}"
      else
        keystr = key.to_s
      end
      
      retstr << "[#{keystr}] => "
      retstr << Php4r.print_r(val, true, count + 1).to_s
    end
    
    i = 0
    while i < count - 1
      retstr << "   "
      i += 1
    end
    
    retstr << "}\n"
  elsif argument.is_a?(String) or argument.is_a?(Integer) or argument.is_a?(Fixnum) or argument.is_a?(Float)
    retstr << "#{argument}\n"
  elsif argument.is_a?(Symbol)
    retstr << ":#{argument.to_s}\n"
  elsif argument.is_a?(Exception)
    retstr << "#\{#{argument.class.to_s}: #{argument.message}}\n"
  elsif cstr == "Thread"
    retstr << "#{argument.class.name} - "
    
    hash = {}
    argument.keys.each do |key|
      hash[key] = argument[key]
    end
    
    retstr << Php4r.print_r(hash, true, count).to_s
  elsif cstr == "Class"
    retstr << "#{argument.class.to_s} - "
    hash = {"name" => argument.name}
    retstr << Php4r.print_r(hash, true, count).to_s
  elsif cstr == "URI::Generic"
    retstr << "#{argument.class.to_s}{\n"
    methods = [:host, :port, :scheme, :path]
    count += 1
    methods.each do |method|
      i_spaces = 0
      while i_spaces < count - 1
        retstr << "   "
        i_spaces += 1
      end
      
      retstr << "#{method}: #{argument.send(method)}\n"
    end
    
    count -= 1
    
    i = 0
    while i < count - 1
      retstr << "   "
      i += 1
    end
    
    retstr << "}\n"
  elsif cstr == "Time" or cstr == "Datet"
    argument = argument.time if cstr == "Datet"
    retstr << "#{cstr}::#{"%04d" % argument.year}-#{"%02d" % argument.month}-#{"%02d" % argument.day} #{"%02d" % argument.hour}:#{"%02d" % argument.min}:#{"%02d" % argument.sec}\n"
  elsif argument.respond_to?(:to_a)
    retstr << "#{argument.class.name}{\n"
    
    arr_count = 0
    argument.to_a.each do |i|
      i_spaces = 0
      while i_spaces < count
        retstr << "   "
        i_spaces += 1
      end
      
      retstr << "[#{arr_count}] => "
      retstr << Php4r.print_r(i, true, count + 1).to_s
      arr_count += 1
    end
    
    i_spaces = 0
    while i_spaces < count - 1
      retstr << "   "
      i_spaces += 1
    end
    
    retstr << "}\n"
  else
    #print argument.to_s, "\n"
    retstr << "Unknown class: '#{cstr}' with superclass '#{supercl}'.\n"
  end
  
  if ret.is_a?(TrueClass)
    return retstr
  else
    print retstr
  end
end

#readdir(res) ⇒ Object 



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# File 'lib/php4r.rb', line 473

def readdir(res)
  ret = res[:files][res[:index]] if res[:files].index(res[:index]) != nil
  return false if !ret
  res[:index] += 1
  return ret
end

#realpath(pname) ⇒ Object 



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# File 'lib/php4r.rb', line 713

def realpath(pname)
  require "pathname"
  
  begin
    return Pathname.new(pname.to_s).realpath.to_s
  rescue => e
    return false
  end
end

#require_once(filename) ⇒ Object 



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# File 'lib/php4r.rb', line 599

def require_once(filename)
  require filename
end

#serialize(argument) ⇒ Object 



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# File 'lib/php4r.rb', line 918

def serialize(argument)
  require "php_serialize" #gem: php-serialize
  return PHP.serialize(argument)
end

#session_start ⇒ Object

This method is only here for convertion support - it doesnt do anything.



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# File 'lib/php4r.rb', line 579

def session_start
  
end

#setcookie(cname, cvalue, expire = nil, domain = nil) ⇒ Object 



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# File 'lib/php4r.rb', line 565

def setcookie(cname, cvalue, expire = nil, domain = nil)
  args = {
    "name" => cname,
    "value" => cvalue,
    "path" => "/"
  }
  args["expires"] = Time.at(expire) if expire
  args["domain"] = domain if domain
  
  _kas.cookie(args)
  return status
end

#strip_tags(htmlstr) ⇒ Object 



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# File 'lib/php4r.rb', line 451

def strip_tags(htmlstr)
  htmlstr.scan(/(<([\/A-z]+).*?>)/) do |match|
    htmlstr = htmlstr.gsub(match[0], "")
  end
  
  return htmlstr.gsub("&nbsp;", " ")
end

#strpos(haystack, needle) ⇒ Object 



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# File 'lib/php4r.rb', line 249

def strpos(haystack, needle)
  return false if !haystack
  return false if !haystack.to_s.include?(needle)
  return haystack.index(needle)
end

#strtolower(str) ⇒ Object 



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# File 'lib/php4r.rb', line 185

def strtolower(str)
  return str.to_s.downcase
end

#strtotime(date_string, cur = nil) ⇒ Object 



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# File 'lib/php4r.rb', line 391

def strtotime(date_string, cur = nil)
  require "datet"
  
  if !cur
    cur = Datet.new
  else
    cur = Datet.new(Time.at(cur))
  end
  
  date_string = date_string.to_s.downcase
  
  if date_string.match(/[0-9]+-[0-9]+-[0-9]+/i)
    begin
      return Time.local(*ParseDate.parsedate(date_string)).to_i
    rescue
      return 0
    end
  end
  
  date_string.scan(/((\+|-)([0-9]+) (\S+))/) do |match|
    timestr = match[3]
    number = match[2].to_i
    mathval = match[1]
    number = -number if mathval == "-"
    
    if timestr == "years" or timestr == "year"
      cur.add_years(number)
    elsif timestr == "months" or timestr == "month"
      cur.add_months(number)
    elsif timestr == "weeks" or timestr == "week"
      cur.add_days(number * 7)
    elsif timestr == "days" or timestr == "day"
      cur.add_days(number)
    elsif timestr == "hours" or timestr == "hour"
      cur.add_hours(number)
    elsif timestr == "minutes" or timestr == "minute" or timestr == "min" or timestr == "mints"
      cur.add_minutes(timestr)
    elsif timestr == "seconds" or timestr == "second" or timestr == "sec" or timestr == "secs"
      cur.add_seconds(number)
    end
  end
  
  return cur.to_i
end

#strtoupper(str) ⇒ Object 



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# File 'lib/php4r.rb', line 181

def strtoupper(str)
  return str.to_s.upcase
end

#substr(string, from, to = nil) ⇒ Object 



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# File 'lib/php4r.rb', line 255

def substr(string, from, to = nil)
  #If 'to' is not given it should be the total length of the string.
  if to == nil
    to = string.length
  end
  
  #The behaviour with a negative 'to' is not the same as in PHP. Hack it!
  if to < 0
    to = string.length + to
  end
  
  #Cut the string.
  string = "#{string[from.to_i, to.to_i]}"
  
  #Sometimes the encoding will no longer be valid. Fix that if that is the case.
  if !string.valid_encoding? and Php4r.class_exists("Iconv")
    string = Iconv.conv("UTF-8//IGNORE", "UTF-8", "#{string}  ")[0..-2]
  end
  
  #Return the cut string.
  return string
end

#time ⇒ Object 



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# File 'lib/php4r.rb', line 634

def time
  return Time.now.to_i
end

#trim(argument) ⇒ Object 



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# File 'lib/php4r.rb', line 914

def trim(argument)
  return argument.to_s.strip
end

#ucwords(string) ⇒ Object 



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# File 'lib/php4r.rb', line 177

def ucwords(string)
  return string.to_s.split(" ").select{|w| w.capitalize! or w }.join(" ")
end

#unlink(filepath) ⇒ Object 



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# File 'lib/php4r.rb', line 382

def unlink(filepath)
  FileUtils.rm(filepath)
end

#unserialize(argument) ⇒ Object 



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# File 'lib/php4r.rb', line 923

def unserialize(argument)
  require "php_serialize" #gem: php-serialize
  return PHP.unserialize(argument.to_s)
end

#urldecode(string) ⇒ Object 



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# File 'lib/php4r.rb', line 308

def urldecode(string)
  #Thanks to CGI framework
  str = string.to_s.tr('+', ' ').gsub(/((?:%[0-9a-fA-F]{2})+)/) do
    [$1.delete('%')].pack('H*')
  end
end

#urlencode(string) ⇒ Object 



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# File 'lib/php4r.rb', line 315

def urlencode(string)
  #Thanks to CGI framework
  string.to_s.gsub(/([^ a-zA-Z0-9_.-]+)/) do
    '%' + $1.unpack('H2' * $1.bytesize).join('%').upcase
  end.tr(' ', '+')
end

#utf8_decode(str) ⇒ Object 



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# File 'lib/php4r.rb', line 544

def utf8_decode(str)
  str = str.to_s if str.respond_to?(:to_s)
  require "iconv" if RUBY_PLATFORM == "java" #This fixes a bug in JRuby where Iconv otherwise would not be detected.
  
  if str.respond_to?(:encode)
    begin
      return str.encode("utf-8", "iso-8859-1")
    rescue Encoding::InvalidByteSequenceError
      #ignore - try iconv
    end
  end
  
  require "iconv"
    
  begin
    return Iconv.conv("utf-8", "iso-8859-1", str.to_s)
  rescue
    return Iconv.conv("utf-8//ignore", "iso-8859-1", str.to_s)
  end
end

#utf8_encode(str) ⇒ Object 



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# File 'lib/php4r.rb', line 524

def utf8_encode(str)
  str = str.to_s if str.respond_to?("to_s")
  
  if str.respond_to?("encode")
    begin
      return str.encode("iso-8859-1", "utf-8")
    rescue Encoding::InvalidByteSequenceError
      #ignore - try iconv
    end
  end
  
  require "iconv"
  
  begin
    return Iconv.conv("iso-8859-1", "utf-8", str.to_s)
  rescue
    return Iconv.conv("iso-8859-1//ignore", "utf-8", "#{str}  ").slice(0..-2)
  end
end