operadores_asignacion.php

<?php
$a += $b; // $a = $a + $b;

$a -= $b; // $a = $a - $b;

$a *= $b; // $a = $a * $b;

$a /= $b; // $a = $a / $b;

$a %= $b; // $a = $a % $b;

$a **= $b; // $a = $a ** $b;

$a .= $b; // $a = $a $b;
$a = $a $b;