php中global和$GLOBALS[]是比较常见全局变量了,下面我们给大家看一个简单的实例,来区别一下global和$GLOBALS[]用法吧。
根据官方的解释是 :
1.$GLOBALS['var']是外部的全局变量本身。
代码如下 | 复制代码 |
$var1 = 1; |
2.global $var是外部$var的同名引用或者指针。
代码如下 | 复制代码 |
$globalStr = '.com'; function globalTest(){ global $globalStr; $globalStr = 'coderbolg'.$globalStr; unset($globalStr); } globalTest(); echo $globalStr; //输入: coderbolg.com |

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