Code optimization in PHP
<ol>
<li><p>I need 3 temporary variables is there any difference between this codes ?
<code>$temp1</code>, <code>$temp2</code>, <code>$temp3</code>     vs    <code>$temp[0]</code>,<code>$temp[1]</code>,<code>$temp[2]</code>;</p></li>
<li><p>If i have a variable name <code>$X</code> in page1.php and in page2.php and then i include page2.php in page1.php, is the variable <code>$X</code> going to be overwritten ?
can i stop this ?</p></li>
</ol>
