PHP-如何在循环中创建变量名? [英] PHP - How Can I Create Variable Names Within a Loop?

问题描述

我的目标是创建一个创建变量名的循环.如:

My goal is to have a loop where variable names are created. Such as:

$variable1
$variable2
$variable3

$variable1
$variable2
$variable3

并在循环内分配值.例如，从1到7的for loop会生成变量$variable1, $variable2, $variable3, .etc，每个变量都有迭代器的值.

and assigned values within the loop. For instance, a for loop from 1 to 7 produces the variables $variable1, $variable2, $variable3, .etc, each with the value of the iterator.

推荐答案

有几种方法.一种是通过字符串和双精度$，但是我不喜欢这种方法.程序员可以轻松地删除双精度$(将其视为typeo).

There are several ways. One is via a string and a double $, but I don't like this method. A programmer could easily remove the double $ (seeing it as a typeo).

for($i = 0; $i <= 7; $i++) {
     $name = "variable{$i}";
     $$name = "foo";
}

最好的方法是显式声明.

The best approach is the explicit statement.

for($i = 0; $i <= 7; $i++) {
     ${"variable$i"} = "foo";
}

使用显式内联字符串，毫无疑问您正在做什么.另一个PHP程序员不会错误地更改代码.

With the explicit inline string there is no doubt about the intent of what you're doing. Another PHP programmer will not alter the code by mistake.

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