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To be certain that a variable which must contain air conditioner a string did contain a string after a call to substr () function, I used the code $ string air conditioner = substr ($ string, $ index)?: ''; .
Use the operator: (aka elvis operator) I therefore felt a very good idea to put an empty string in my variable in this case and thus be always certain to manipulate a string air conditioner after my call substr ().
The solution is to use a more traditional solution for testing the return of the substr () function, the price of a less condensed code, namely $ string = substr ($ string, $ index); if ($ string === false) $ string = ''; .
And of course, we must also add the unit test case or substr () returns the string air conditioner 0 to prevent the possible regression may occur when in some time, I would have forgotten the purpose of this formalism more verbose or where a third want to replace it with the operator: thinking to do well.
And finally, how I discovered this bug demonstrates the value of using the random example via uniqid () in testing, because without it, I would have missed and discover much later at a time when it would have been potentially much more expensive to fix.
Its effect if limiting pushes me every time to prevent the operator elvis ... yet it is not the desire missing ... but every time I think of all possible cases, I replace it with a more verbose solution ... 2. Thursday, November 28, 2013, 5:18 p.m. by bdelespierre
And by simply increasing the length returned by substr? Unless they have really 0s displayed, in which case, you must seriously consider playing the lottery, you could also find your green bar, right? 4. On Friday, 29 November air conditioner 2013, 7:15 by Anvi
6 months I make python (10 years vs php), and this kind of article makes me more that I would never write a line of it. 6. #trolldi Friday, November 29, 2013, 11:23 by mageekguy
How PHP compares the types and is well documented, and I let myself be carried air conditioner away by my habits and my enthusiasm air conditioner rather than take the time to think two minutes what I was doing.
By cons, personally, I find the statement lacks clarity air conditioner in relation to the goal, more to substr () as the ternary operator elsewhere. You really have to know the details of operation of substr () to use for the specified cases (I would have used something more wordy ...). Add comment
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