<?php
header("Content-type:text/html;charset=utf-8;");
//ç®å示ä¾
//ä¼ å¼ï¼å¼çå¤å¶
$a=10;
$b=20;
$a=$b;
$b=$a+9;
echo $a."====".$b;
echo "<br/>";
//20====29
//å¼ç¨ä¼ å¼ï¼
//说ç½äºå°±æ¯aï¼bæååä¸å
åå°åï¼æ¯å¦ï¼aåæ10ï¼bä¹ä¼åæ10ï¼
//båæ20ï¼aä¹ä¼åæ20ï¼
$a=10;
$b=20;
$a=&$b;
$b=$a+9;
echo $a."====".$b;
echo "<br/>";
//128====128
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