Looking at a PHP question, I don't know why. ask someone to solve it.

I was surprised to see a PHP question, but I couldn't understand why. I was surprised to ask GAO to first check what the output result was and then try again... Find the cause .. & Lt ;? $ V1 = 60.06; $ v2 = 60.05 + 0.01; if ($ v1 = $ v2) echo & quot; equal & quot; elseecho & q see a PHP question, I don't know the reason. please wait.
It would be surprising to first check what the output result is and then try again... Find the cause ..

$ V1 = 60.06;
$ V2 = 60.05 + 0.01;
If ($ v1 = $ v2)
Echo "equal ";
Else
Echo "not equal ";


If ($ v1 ===$ v2)
Echo "equal ";
Else
Echo "not equal ";
?>




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They are not equal.
If the first is not equal, the second is not equal.
This involves the storage of floating point numbers, which are not precisely stored.
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Add double quotation marks to $ v2 for a long time.
If ($ v1 = "$ v2 ")
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The landlord should check the post on the top of this version. There are FAQs in this section.
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Data type issues.
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This is the problem of floating point storage. LZ can see the floating point of basic programming.
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Http://www.enjoyphp.com/2011/development/php/float-cm/
Read this article,
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The exact bit problem later,
Score
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I have never tried this!