我这里有一段代码
$str =strtr($str,array( "\n" => "\\n", "" => " ", "" => " "));
实际上数组上那两个并不为空格字符,可以把代码拷贝到sublime text里面去显示,就会发现如下图所示
这里有个问题,
我们如何打出这两个字符呢?
这些个字符分别代表什么意义?
回复讨论(解决方案)
ESC chr(27) 0x1b 转义
BEL chr(7) 0x07 响铃
都是 ASCII 控制符
谢谢啦,我刚刚也找到答案了.
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