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Variable undefined warning for array with short array syntax [message #1710537]

Wed, 07 October 2015 11:32

Jason Siebert

Messages: 3
Registered: October 2015

Junior Member

Whenever I declare a variable with short array syntax like:
$json ['success'] = 1;

I get a warning that the variable is undefined. If I do it without short array syntax it doesn't cause a warning. I am currently using Mars 4.5.1 with PDT 3.6 and DLTK 5.3.

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Re: Variable undefined warning for array with short array syntax [message #1710558 is a reply to message #1710537]

Wed, 07 October 2015 14:00

Dawid Pakula

Messages: 291
Registered: March 2013

Senior Member

this error isn't from PDT but from PEX Core-Plugin. Anyway its correct:

$json['success'] = 1; is just array assign. PHP will throw out E_NOTICE, create array and assign 1 to success property,
correct way its:
$json = ['success' => 1];
or
$json = [];
$json['success'] = 1;

You can also disable undefined variable validator in eclipse php preferences (php / validation / semantic analysis)

PDT: http://eclipse.org/pdt
PDT-Ex: http://p2.pdt-extensions.org | nightlies: http://p2-dev.pdt-extensions.org
Sponsor me: https://github.com/sponsors/zulus

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Re: Variable undefined warning for array with short array syntax [message #1710643 is a reply to message #1710558]

Thu, 08 October 2015 07:37

Jason Siebert

Messages: 3
Registered: October 2015

Junior Member

I was in the thought that the array was defined with that statement. Now I see it actually gets corrected by PHP to be the proper way. Thanks for your insight Dawid!

Edit: Actually without even changing the Semantic Analysis it's working without giving me a warning. I did have a bad build file which I corrected. I also couldn't find the preference "PHP|Validation|Semantic Analysis", all I have listed under "Validation" is "Task Tags"

Any thoughts?

[Updated on: Thu, 08 October 2015 07:45]

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Re: Variable undefined warning for array with short array syntax [message #1710689 is a reply to message #1710643]

Thu, 08 October 2015 12:17

Dawid Pakula

Messages: 291
Registered: March 2013

Senior Member

Make sure PEX Core-Plugin is installed. Available at http://p2.pdt-extensions.org/ as PDT Extensions.

PDT: http://eclipse.org/pdt
PDT-Ex: http://p2.pdt-extensions.org | nightlies: http://p2-dev.pdt-extensions.org
Sponsor me: https://github.com/sponsors/zulus

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Re: Variable undefined warning for array with short array syntax [message #1710741 is a reply to message #1710689]

Thu, 08 October 2015 19:29

Jason Siebert

Messages: 3
Registered: October 2015

Junior Member

That's what it was. I had uninstalled it and didn't realize that the extension plugin was the one that gives Eclipse that behaviour. Thanks for the help.

Btw, would you know if there is anything that provides content assist for object oriented php. When I tried to use mysqli->close it gave me the option of ($link), but that's only for procedural php. It should be nothing since the object oriented one takes no arguments.

[Updated on: Thu, 08 October 2015 19:34]

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