For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 13 and the first side effect is on line 6.
The PSR-1: Basic Coding Standard recommends that a file should either introduce
new symbols, that is classes, functions, constants or similar, or have side effects.
Side effects are anything that executes logic, like for example printing output,
changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state
of an application. It also promotes a cleaner style of programming and makes your code
less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the
PSR-1.
The class Composer\Package\Package does not exist. Did you forget a USE statement, or did you not list all dependencies?
This error could be the result of:
1. Missing dependencies
PHP Analyzer uses your composer.json file (if available) to determine the
dependencies of your project and to determine all the available classes and functions.
It expects the composer.json to be in the root folder of your repository.
Are you sure this class is defined by one of your dependencies, or did you maybe
not list a dependency in either the require or require-dev section?
2. Missing use statement
PHP does not complain about undefined classes in ìnstanceof checks. For
example, the following PHP code will work perfectly fine:
if($xinstanceofDoesNotExist){// Do something.}
If you have not tested against this specific condition, such errors might go
unnoticed.
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The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.