var_dump报告错误的字符串长度是什么意思? [英] What does it mean when var_dump reports the wrong string length?

问题描述

我试图弄清楚为什么变量没有触发应有的条件. var_dump报告类似以下内容:

I'm trying to figure out why a variable isn't triggering a conditional that it should. var_dump reports something like this:

string(20) "0"

为什么当长度明显为1时报告长度为20?

Why is it reporting a length of 20 when the length is clearly 1?

推荐答案

它可能正在呈现html.即var_dump('<p class="abc">0</p>')会向肉眼输出string(20) "0"

It might be rendering html. i.e. var_dump('<p class="abc">0</p>') would output string(20) "0" to the naked eye

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