Allow arbitrary expressions for empty() #54

merged 1 commit into from May 24, 2012


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LinusU commented Apr 17, 2012

I think that this is a great idea, thank you for taking the time to implement it!

@nikic nikic Allow arbitrary expressions for empty()
This change is as per RFC

The change allows passing the result of function calls and other
expressions to the empty() language construct. This is accomplished by
simply rewriting empty(expr) to !expr.

The change does not affect the suppression of errors when using empty()
on variables. empty($undefinedVar) will continue not to throw errors.
When an expression is used inside empty() on the other hand, errors will
not be suppressed. Thus empty($undefinedVar + $somethingElse) *will*
throw a notice.

The change also does not make empty() into a real function, so using
'empty' as a callback is still not possible.

In addition to the empty() changes the commit adds nicer error messages
when isset() is used on function call results or other expressions.
@php-pulls php-pulls merged commit ec061a9 into php:master May 24, 2012

Comment on behalf of stas at

merged to master, thanks


Comment on behalf of stas at

merged to master, thanks

@php-pulls php-pulls pushed a commit that referenced this pull request Mar 15, 2013
@dstogov dstogov Merge branch 'PHP-5.5'
* PHP-5.5: (101 commits)
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  Allow only shared O+ build
  Fixed typos
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  fixed memory leaks
  Fixed Issue #57 (segfaults in drupal7)
  Fixed issue #58 (PHP-5.2 compatibility)
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  fix ANSI C90 compat
  Fixed test
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  Fixed bug #64353 (Built-in classes can be unavailable with dynamic includes and Optimizer+)
  Save a stat() call by calling sapi_module.get_stat()
  Fixed #54 (PECL install adds extension= instead of zend_extension= to php.ini)
  release 7.0.0
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