<?php
 
  class User {
    function saludar($param_1) {
      echo "Hola, soy $param_1";
    }
  }
 
  User::saludar("Miguel");
 
?>

<?php
 
  class User {
    static function saludar($param_1) {
      echo "Hola, soy $param_1";
    }
  }
 
  User::saludar("Miguel");
 
?>

Public Class Form1
    Private Sub btnCalc_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles btnCalc.Click
        Dim num As Integer = txtNum.Text
        txtDer.Text = num Mod 10
        txtIzq.Text = num / 10 - ((num Mod 10) / 10)
    End Sub
End Class

Public Class Form1
    Private Sub btnCalc_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles btnCalc.Click
        txtDer.Text = txtNum.Text.Substring(1, 1)
        txtIzq.Text = txtNum.Text.Substring(0, 1)
    End Sub
End Class

Net Start Schedule

<?php
 
  $total_seconds = 100;
 
  $secondsInAMinute = 60;
  $secondsInAnHour  = 60     * $secondsInAMinute;
  $secondsInADay    = 24     * $secondsInAnHour;
  $secondsInAMonth  = 30.417 * $secondsInADay;
  $secondsInAYear   = 12     * $secondsInAMonth;
 
  $years     = $total_seconds / $secondsInAYear;
  $r_years   = $total_seconds % $secondsInAYear;
 
  $months    = $r_years / $secondsInAMonth;
  $r_months  = $r_years % $secondsInAMonth;
 
  $days      = $r_months / $secondsInADay;
  $r_days    = $r_months % $secondsInADay;
 
  $hours     = $r_days / $secondsInAnHour;
  $r_hours   = $r_days % $secondsInAnHour;
 
  $minutes   = $r_hours / $secondsInAMinute;
  $r_minutes = $r_hours % $secondsInAMinute;
 
  $seconds   = $r_minutes;
 
  echo "Años     : " . (int) $years   . "<br>";
  echo "Meses    : " . (int) $months  . "<br>";
  echo "Días     : " . (int) $days    . "<br>";
  echo "Horas    : " . (int) $hours   . "<br>";
  echo "Minutos  : " . (int) $minutes . "<br>";
  echo "Segundos : " . (int) $seconds . "<br>";
?>

Años     : 0
Meses    : 0
Días     : 0
Horas    : 0
Minutos  : 1
Segundos : 40