- assert: documentation ( source)
- var_dump: documentation ( source)
- microtime: documentation ( source)
- hash: documentation ( source)
- explode: documentation ( source)
- trim: documentation ( source)
- rand: documentation ( source)
<?php
final class CommandId
{
private $name;
private $time;
private $hash;
public function __construct($name)
{
$this->time = microtime(true);
$this->name = trim($name);
$this->hash = hash('crc32', rand(0, $this->time));
if (empty($this->name)) {
throw new DomainException('Name must not be empty');
}
}
public static function fromString($idString)
{
$parts = explode('_', $idString);
if (count($parts) != 3) {
throw new DomainException("Unexpected format [$idString]");
}
$id = new static($parts[0]);
$id->time = (float) $parts[1];
$id->hash = $parts[2];
return $id;
}
public function name()
{
return $this->name;
}
public function time()
{
return $this->time;
}
public function __toString()
{
return "{$this->name}_{$this->time}_{$this->hash}";
}
}
$one = new CommandId('foo');
$two = new CommandId('foo');
assert($one != $two);
var_dump($one, $two, (string) $one, (string) $two);