PHP 8.5 Pipe Operator

The PHP 8.5 pipe operator |> passes the expression on its left into a callable on its right. It can make a sequence of transformations read in execution order instead of inside-out.

Changes Worth Recognising

• Use first-class callables such as trim(...) where the callable accepts the piped value.
• Use a short arrow function when an extra argument is required.
• Keep pipelines short enough that error handling and types remain obvious.
• Prefer named steps when transformations need branching or explanation.

Build a Slug

<?php

$slug = ' PHP 8.5 Released '
    |> trim(...)
    |> (fn(string $value): string => str_replace(' ', '-', $value))
    |> strtolower(...);

echo $slug . PHP_EOL;

// Prints:
// php-8.5-released

Upgrade Review

• Make sure each callable accepts the previous result.
• Do not hide a complex workflow inside an unreadable chain.
• Confirm deployment runtimes support PHP 8.5 syntax before commit.

Pipelines are most useful for small, linear transformations where each step has an obvious input and output.