PHP IF 语句的问题
嘿伙计们，现在我需要检查两个文件的内容以确保它们相同
<?php
$tk1 = file_get_contents("done.txt");
$tk2 = file_get_contents("guessed.txt");
echo $tk1."<br>";
echo $tk2;
echo "<br>";
if($tk2 == (string)$tk1){
echo "got it";
}else{
echo "aww";
}
?>
好的，done.txt 里面有whatonearth，guessed.txt 里面也有whatonearth 但它一直在回声，而且从来没有回声得到它......：s。有人可以帮忙吗？ 谢谢
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
听起来好像
done.txt和guessed.txt没有相同的内容。也许末尾有多余的空白，或者类似的不显眼的东西。我建议您使用var_dump而不是echo $tk1;和echo $tk2;，这样您就可以准确地看到这些变量的值有。It sounds as though
done.txtandguessed.txtdon't have the same contents. Maybe one has extra whitespace at the end, or something similarly inconspicuous. Instead of doingecho $tk1;andecho $tk2;I would recommend that you usevar_dumpso that you can see exactly what values those variables have.您发布的代码有效，所以我的假设是这两个文件之间存在细微的差异。
这些文件是如何创建的？它们是由用户上传的吗？由 PHP 生成？如果它们之一或两者都来自外部来源，那么您应该检查换行符的处理方式。如果一个文件使用 CR+LF 换行（即“Windows 风格”），而另一个文件只是 LF（即“Unix 风格”），则比较将失败。
The code you've posted works, so my assumption would be that there is a subtle difference between the two files.
How are these files created? Are they uploaded by a user? Generated by PHP? If one or both of them are coming from an outside source, then you should check how newlines are handled. If one file uses CR+LF for newlines (i.e. "Windows-style"), but another is just LF (i.e. "Unix-Style"), then the comparison would fail.
对 php 不太了解，但是转换不会改变 $tk1 吗？
Don't know much about php but wont the casting change $tk1?