php 生成 uuid_PHP チュートリアル

Java代
関数 create_guid()
{
$microTime = microtime(); 
list($a_dec, $a_sec) =explode(" ", $microTime); 
$dec_hex = dechex($a_dec* 1000000); 
$sec_hex = dechex($a_sec); 
ensure_length($dec_hex, 5); 
ensure_length($sec_hex, 6); 
$guid = ""; 
$guid .= $dec_hex; 
$guid .= create_guid_section(3); 
$guid .= '-'; 
$guid .= create_guid_section(4); 
$guid .= '-'; 
$guid .= create_guid_section(4); 
$guid .= '-'; 
$guid .= create_guid_section(4); 
$guid .= '-'; 
$guid .= $sec_hex; 
$guid .= create_guid_section(6); 
$guid を返します。 
}
関数 create_guid_section($characters)
{
$return = ""; 
for($i=0; $i {
$return .= dechex(mt_rand(0,15)); 
}
$return を返す; 
}
 
関数 ensure_length(&$string, $length)
 
{
    $strlen = strlen($string);   
   if($strlen    {
        $string = str_pad($string,$length,"0");   
    }
     else if($strlen > $length)
   {
         $string = substr($string, 0, $length);   
  }
 
 }