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Add documentation for WordPress.PHP.RestrictedPHPFunctions #2491

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Add documentation for WordPress.PHP.RestrictedPHPFunctions #2491

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a7ee514
Add documentation for WordPress.PHP.RestrictedPHPFunctions
gogdzl Sep 17, 2024
5c91ef6
Add em tag
gogdzl Sep 17, 2024
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29 changes: 29 additions & 0 deletions WordPress/Docs/PHP/RestrictedPHPFunctionsStandard.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
<?xml version="1.0"?>
<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
title="Restricted PHP Functions"
>
<standard>
<![CDATA[
The restricted function create_function() should not be used.
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Suggested change
The restricted function create_function() should not be used.
The function create_function() should not be used.


create_function() is deprecated as of PHP 7.2 and removed in PHP 8.0. Please use declared named or anonymous functions instead.
]]>
</standard>
<code_comparison>
<code title="Valid: Using anonymous function (closure).">
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I'm not against mentioning here that anonymous functions are also known as closure. But if it is important to provide this information, I believe it should also be present in the description of the <standard> block.

<![CDATA[
add_action( 'init', function() {
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I wonder if it is a good idea to include an example with a declared named function as well (and then also update the title attribute)? Maybe it is just me, but it took me a second to properly read the sentence Please use declared named or anonymous functions instead. and to realize that functions applies to both declared named and anonymous. My first thought was "what is a declared named"?

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I'm unsure if including a call to add_action() here helps understand what the sniff does or if it just adds noise. Usually, the examples are minimalistic, and just calling calling create_function() or calling it and assigning the returned value to a variable is enough?

return foo( 'bar' );
} );
Comment on lines +16 to +18
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Suggested change
add_action( 'init', function() {
return foo( 'bar' );
} );
add_action( 'init', <em>function() {
return foo( 'bar' );
}</em> );

We can highlight the good bit of this snippet to focus on.

]]>
</code>
<code title="Invalid: Using create_function().">
<![CDATA[
add_action( 'init', <em>create_function( '',
'return foo( "bar" );'
)</em> );
]]>
</code>
</code_comparison>
</documentation>
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