在if中分配变量 [英] Assigning variables in if's
本文介绍了在if中分配变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
嗨!
In while(false!==($ file = readdir($ handle)))
会发生什么?
分配$文件,并将其值与false进行比较?
将分配与false进行比较
说,我想返回true或错误代码。我可以吗;
if($ err = somefunc())
echook
else
echo"错误:$ err";
WBR
Sonnich
Hi!
In while (false !== ($file = readdir($handle)))
what happens?
The $file gets assigned, and the value of that is compared with false?
The assignment is being compared with false
Say, I want to return true or an error code. Can I do;
if($err = somefunc())
echo "ok"
else
echo "error: $err";
WBR
Sonnich
推荐答案
file = readdir(
file = readdir(
handle)))
会发生什么?
handle)))
what happens?
The
文件被分配,并且将其值与false进行比较?
将该赋值与false进行比较
说,我想返回true或错误代码。我可以吗;
if(
file gets assigned, and the value of that is compared with false?
The assignment is being compared with false
Say, I want to return true or an error code. Can I do;
if(
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