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PHP 8.6 will introduce partial function application (PFA), allowing developers to create closures by replacing function arguments with placeholders (? or ...). This feature extends PHP 8.1's first-class callable syntax and works seamlessly with the pipeline operator introduced in PHP 8.5. Instead of writing verbose arrow functions for callbacks, developers can use concise syntax like `str_replace('hello', 'hi', ?)` to create partially applied functions. The RFC includes support for named arguments, variadic parameters, magic methods, and various placeholder combinations, with performance comparable to manual closures.

【PHP8.6】PHPで関数の部分適用が使えるようになる #日本語訳

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PHP 8.6 will bring the Pipe Operator |> even further

<p>PHP 8.6 will bring the Pipe Operator |&gt; even further</p>

<p>how this passed daily.dev editorial criterea?</p>
