> While PHP has a lot of nice features, it also has some traps which I
> am forever falling into. One which I find particularly hard to
> understand is how mixed mode comparisons work. For instance
> $string = 'elephant';
> If($string == 0) returns true;
> If($string != 0) returns false;
> If($string === 0) returns false;
> I know that in this case I should use 'If($string == '')', but I still
> manage to forget. Can anyone explain clearly why comparing a string
> with zero gives this apparently anomalous result?
I'm not certain, but I suspect it's because the interpreter attempts to
convert "elephant" to an integer first.
Per Jessen, Zürich (-0.6°C)
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