Add passthrough arguments to PHP binary via -- separator

[Copilot]

Enables passing arbitrary PHP flags when starting the development server. Addresses use cases like loading extensions or setting ini directives that vary across environments.

Changes

• Command building: Positional arguments after -- are inserted before -S flag and properly escaped via Utils\esc_cmd()
• Documentation: Added [<passthrough>...] parameter with Xdebug example
• Tests: Added Behat scenario verifying passthrough with -dmemory_limit=256M

Usage

# Load extension
wp server -- -dzend_extension=xdebug.so

# Set ini directive
wp server -- -dmemory_limit=256M

# Multiple flags
wp server --docroot=public -- -dmemory_limit=256M -dzend_extension=xdebug.so

Final command structure: php [passthrough] -S host:port -t docroot -c config router.php

Fixes #89

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/Behat/Behat/zipball/1b6b08efa995fe4135901b862d112adc7e95ecbb
  • Triggering command: /usr/bin/php8.3 -n -c /tmp/QcSlrc /usr/bin/composer install --no-interaction (http block)
• https://api.github.com/repos/Behat/Gherkin/zipball/05a7459283e8e6af0d46ec25b8bb5960ca3cfa7b
  • Triggering command: /usr/bin/php8.3 -n -c /tmp/QcSlrc /usr/bin/composer install --no-interaction (http block)
• https://api.github.com/repos/PHPCSStandards/PHPCSExtra/zipball/8e89a01c7b8fed84a12a2a7f5a23a44cdbe4f62e
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• https://api.github.com/repos/PHPCSStandards/PHPCSUtils/zipball/8b8e17615d04f2fc2cd46fc1d2fd888fa21b3cf9
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• https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/0ca86845ce43291e8f5692c7356fccf3bcf02bf4
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• https://api.github.com/repos/PHPCSStandards/composer-installer/zipball/e9cf5e4bbf7eeaf9ef5db34938942602838fc2b1
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• https://api.github.com/repos/PHPCompatibility/PHPCompatibility/zipball/ff4efdd80e094a81fd6329b570c9a632f21d42b4
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• https://api.github.com/repos/WordPress/WordPress-Coding-Standards/zipball/d2421de7cec3274ae622c22c744de9a62c7925af
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• https://api.github.com/repos/Yoast/PHPUnit-Polyfills/zipball/134921bfca9b02d8f374c48381451da1d98402f9
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• https://api.github.com/repos/composer/semver/zipball/198166618906cb2de69b95d7d47e5fa8aa1b2b95
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• https://api.github.com/repos/nikic/PHP-Parser/zipball/3a454ca033b9e06b63282ce19562e892747449bb
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• https://api.github.com/repos/php-fig/event-dispatcher/zipball/dbefd12671e8a14ec7f180cab83036ed26714bb0
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• https://api.github.com/repos/php-fig/log/zipball/f16e1d5863e37f8d8c2a01719f5b34baa2b714d3
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• https://api.github.com/repos/php-parallel-lint/PHP-Console-Color/zipball/7adfefd530aa2d7570ba87100a99e2483a543b88
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• https://api.github.com/repos/php-parallel-lint/PHP-Console-Highlighter/zipball/5b4803384d3303cf8e84141039ef56c8a123138d
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• https://api.github.com/repos/php-parallel-lint/PHP-Parallel-Lint/zipball/6db563514f27e19595a19f45a4bf757b6401194e
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• https://api.github.com/repos/phpstan/extension-installer/zipball/85e90b3942d06b2326fba0403ec24fe912372936
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• https://api.github.com/repos/phpstan/phpstan-deprecation-rules/zipball/f94d246cc143ec5a23da868f8f7e1393b50eaa82
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• https://api.github.com/repos/phpstan/phpstan-phpunit/zipball/72a6721c9b64b3e4c9db55abbc38f790b318267e
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• https://api.github.com/repos/phpstan/phpstan-strict-rules/zipball/b564ca479e7e735f750aaac4935af965572a7845
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• https://api.github.com/repos/sebastianbergmann/environment/zipball/24a711b5c916efc6d6e62aa65aa2ec98fef77f68
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• https://api.github.com/repos/sebastianbergmann/phpunit/zipball/a94ea4d26d865875803b23aaf78c3c2c670ea2ea
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• https://api.github.com/repos/sebastianbergmann/version/zipball/3e6ccf7657d4f0a59200564b08cead899313b53c
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• https://api.github.com/repos/swissspidy/phpstan-no-private/zipball/f7a1890e350c8d8bf26370426a971d7490ae4245
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• https://api.github.com/repos/symfony/console/zipball/c28ad91448f86c5f6d9d2c70f0cf68bf135f252a
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• https://api.github.com/repos/symfony/dependency-injection/zipball/98af8bb46c56aedd9dd5a7f0414fc72bf2dcfe69
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• https://api.github.com/repos/symfony/event-dispatcher-contracts/zipball/59eb412e93815df44f05f342958efa9f46b1e586
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• https://api.github.com/repos/symfony/event-dispatcher/zipball/b7dc69e71de420ac04bc9ab830cf3ffebba48191
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• https://api.github.com/repos/symfony/finder/zipball/9f696d2f1e340484b4683f7853b273abff94421f
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• https://api.github.com/repos/symfony/polyfill-ctype/zipball/a3cc8b044a6ea513310cbd48ef7333b384945638
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• https://api.github.com/repos/symfony/polyfill-php73/zipball/0f68c03565dcaaf25a890667542e8bd75fe7e5bb
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• https://api.github.com/repos/symfony/service-contracts/zipball/45112560a3ba2d715666a509a0bc9521d10b6c43
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• https://api.github.com/repos/symfony/translation-contracts/zipball/65a8bc82080447fae78373aa10f8d13b38338977
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• https://api.github.com/repos/symfony/translation/zipball/ec25870502d0c7072d086e8ffba1420c85965174
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• https://api.github.com/repos/symfony/var-exporter/zipball/0f020b544a30a7fe8ba972e53ee48a74c0bc87f4
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• https://api.github.com/repos/symfony/yaml/zipball/90208e2fc6f68f613eae7ca25a2458a931b1bacc
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• https://api.github.com/repos/szepeviktor/phpstan-wordpress/zipball/7f8cfe992faa96b6a33bbd75c7bace98864161e7
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• https://api.github.com/repos/wp-cli/entity-command/zipball/896b7fb5ed51fe556017b2c71126947db5cd2b68
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• https://api.github.com/repos/wp-cli/php-cli-tools/zipball/f12b650d3738e471baed6dd47982d53c5c0ab1c3
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• https://api.github.com/repos/wp-cli/spyc/zipball/6aa0b4da69ce9e9a2c8402dab8d43cf32c581cc7
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• https://api.github.com/repos/wp-cli/wp-cli-tests/zipball/75b660dddaa9f512d104d93da4a0a3ede1183a93
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• https://api.github.com/repos/wp-cli/wp-cli/zipball/ee4fb67b12eb904527bde1c4a0a4d6538a14681a
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Original prompt

---

This section details on the original issue you should resolve

<issue_title>Passthrough args via --?</issue_title>
<issue_description>## Feature Request

• Yes, I reviewed the contribution guidelines.

Describe your use case and the problem you are facing

I want to load Xdebug module into the web server via php -S -dzend_extension=xdebug.so.

Describe the solution you'd like

wp server could pass through additional arguments to php after -- argument.

Example: wp server --docroot=public -- -dzend_extension=xdebug.so

Doing this via wp server --config argument is problematic, because I want to define universally usable commands centrally in composer.json scripts. Due to variety of INI configuration file locations on user's system, which we actually don't want to replace, this doesn't seem to be achievable with a single --config argument.</issue_description>

Comments on the Issue (you are @copilot in this section)

@schlessera Sounds like a reasonable use case.

• Fixes Passthrough args via --? #59

---

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/Server_Command.php	0.00%	15 Missing ⚠️

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