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PHP中引述（变量和函数名前加&符号）的用法

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2016-06-13 10:40:29893browse

PHP中引用（变量和函数名前加&符号）的用法
http://www.ityizhan.com/php-reference-usage/

<?php $a = 5;$b = $a;echo $b;$a++;echo '<br>';echo $b;?>&相当于动态跟踪变量 而不是固定他的值


$a = 5;$b = &$a;$b="world";echo $a;     //world
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