无法将标量值用作数组 [英] Cannot use a scalar value as an array

问题描述

我正在尝试以下代码:

$rescntryvals[] = $rescntry;
$rescntry = "";
$resclkvalscntry[] = $rclick;
$rclick = "";
$resclkaddsnm[] = $addsnmame;
$addsnmame = "";

但是我明白了:

警告:不能将标量值用作数组

warning: Cannot use a scalar value as an array

为什么?那么解决方案是什么?

Why? And what is the solution?

推荐答案

您必须先将$rescntryvals声明为数组.默认情况下，在定义变量之前，所有变量的类型均为null(未定义).

You have to declare $rescntryvals as array before. Per default all variables are of type null (undefined) until you define them.

$rescntryvals  = array();
$rescntryvals[]=$rescntry;

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