PHP静态全局变量跟普通全局变量有什么区别

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Release: 2016-06-13 13:17:54
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PHP静态全局变量和普通全局变量有什么区别?
for($i=1;$i   //$glo=1;
  static $glo=1;
  $glo++;
}
echo $glo;
?>
在上例中$glo是全局作用域的,并且加与不加static关键字输出结果是不同的,事实证明是可以使用静态全局变量这个用法的,但是PHP手册里只谈到在函数里使用静态变量,以及类的静态成员属性和方法。并没有涉及到静态全局变量这个概念,在网络上搜索到的资料基本上都是C,C++,JAVA的对静态全局变量的解释,很少有涉及PHP。我不知道这些语言中的静态变量是否和PHP是一致的。
我目前知道全局变量和静态变量都放在内存同一区域里。还请哪位讲解一下,如果PHP里有静态全局变量这个概念的话,那么它和普通的全局变量有哪些区别?

------解决方案--------------------
区别就在这里

static $glo=10;
echo $glo;//1
for($i=1;$i// echo $glo;
static $glo=1;
$glo++;
}
echo $glo;//5

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