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If I get a variable and I don't know is it set or not I can write
if (isset($a) && $a > 2)
or I can write
if (@ $a > 2)
which is shorter. Is the second syntax good or not?
541
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The expression if(@$a) does not check whether the variable is set or not. The @ symbol just surpresses any warnings which is a bad coding style.
90
I totally sympathize, but suppressing the error using @ is bad practice.
The error still occurs, it just gets suppressed. It costs microscopical amounts of time that can however accumulate to a lot if done in loops.
Also, you take away the possibility to use "undefined variable" notices to your advantage: As a mechanism to avoid typos.
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