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HomeBackend DevelopmentPHP Tutorialphp中数组p[]表示什么?解决方案

php中数组p[]表示什么?
php中数组p[]表示什么?

$g = array();

foreach($re as $key => $val)
{
$g[] = new class_a($val) ;
}

p[]表示当前数组指针?
------解决方案--------------------
手册中有:
用方括号的语法新建/修改
可以通过明示地设定值来改变一个现有的数组。 

这是通过在方括号内指定键名来给数组赋值实现的。也可以省略键名,在这种情况下给变量名加上一对空的方括号(“[]”)。 $arr[key] = value;
$arr[] = value;
// key 可以是 integer 或者 string
// value 可以为任何值。
 


------解决方案--------------------
$g[] 是给数组$g赋值,在你的例子中索引从0开始。
------解决方案--------------------
$g[]就是一个空的数组。

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