По php! Помогите пожалуйста!) Вот задание) изменить значения переменных x и y так, чтобы в x оказалось удвоение значение y, а в y - утроенное значение x.Оформить как функцию, изменяющую - вопрос №1478994

<span class="kw2">function</span> swap<span class="br0">(</span><span class="re0">$x</span> <span class="sy0">,</span> <span class="re0">$y</span><span class="br0">)</span><span class="br0">{</span>    <span class="kw1">if</span><span class="br0">(</span><span class="re0">$x</span><span class="sy0"><</span><span class="re0">$y</span><span class="br0">)</span>    <span class="br0">{</span>        <span class="re0">$x</span><span class="sy0">+=</span><span class="re0">$y</span><span class="sy0">;</span>        <span class="re0">$y</span><span class="sy0">=</span><span class="re0">$x</span><span class="sy0">-</span><span class="re0">$y</span><span class="sy0">;</span>        <span class="re0">$x</span><span class="sy0">=</span><span class="re0">$x</span><span class="sy0">-</span><span class="re0">$y</span><span class="sy0">;</span>    <span class="br0">}</span> <span class="kw1">echo</span> <span class="st0">"x = "</span><span class="sy0">.</span><span class="re0">$x</span><span class="sy0">.</span><span class="st0">"  "</span><span class="sy0">;</span><span class="kw1">echo</span> <span class="st0">"y = "</span><span class="sy0">.</span><span class="re0">$y</span><span class="sy0">.</span><span class="st0">"<br>"</span><span class="sy0">;</span> <span class="br0">}</span>