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CLI and networking support (#119)
### Description Adds support for CLI SAPI and networking in node.js: ``` > npm run build > node ./build-cli/php-cli.js -r 'echo "Hello from PHP !";' Hello from PHP ! > node ./build-cli/php-cli.js -r 'echo substr(file_get_contents("https://wordpress.org"), 0, 16);' <!DOCTYPE html> > node ./build-cli/php-cli.js -r 'echo phpversion();' 8.2.0-dev > PHP=5.6 node ./build-cli/php-cli.js -r 'echo phpversion();' 5.6.40 ``` ### Highlights: * Networking is supported (including MySQL and HTTPS) * Switching PHP versions is supported. * [Most WordPress PHPUnit tests pass](#111). The failures are caused by missing extensions and a few misconfigured settings * PHP Interactive mode is supported but [the arrow keys don't work](#118) * `wp-cli` works ### In broad strokes: * CLI SAPI is compiled with libedit (readline replacement) and ncurses. * Network calls are asynchronous. Emscripten's Asyncify enables calling asynchronous code from synchronous code. TCP sockets are shimmed with a WebSocket connection to a built-in proxy server running on localhost. It supports data transfer, arbitrary connection targets, and setting a few TCP socket options. * PHP's OpenSSL uses the same CA certs as Node.js * PHP 5.6 is patched to work with OpenSSL 1.1.0 and many other small patches are introduced. For more details, see [patches overview](#119 (comment)), Dockerfile, and `phpwasm-emscripten-library.js` ### Future work: * PHP Interactive server isn't supported yet. Adding support is a matter of making the incoming connection polling non-blocking using Asyncify. * Use a more recent OpenSSL version * [Better support for CLI interactive mode](#118)
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‎.eslintignore

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node_modules/**/*
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build/*
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packages/*/build*/*
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src/php-wasm/wasm/build-assets/*

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node_modules
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package-lock.json
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build/*
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build-cli/*
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build-api
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build-wp
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build-php

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‎build-cli/package.json

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{
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"name": "php-cli",
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"version": "0.1.4",
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"description": "PHP CLI via WebAssembly. Part of WordPress Playground.",
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"main": "php-cli.js",
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"author": "The WordPress contributors",
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"contributors": [
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{
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"name": "Adam Zielinski",
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"email": "[email protected]",
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"url": "https://github.com/adamziel"
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}
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],
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"license": "Apache-2.0",
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"dependencies": {
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"ws": "^8.12.0"
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},
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"bin": "php-cli.js",
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"repository": {
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"type": "git",
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"url": "https://github.com/WordPress/wordpress-playground"
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},
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"homepage": "https://developer.wordpress.org/playground"
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}

‎build-cli/php.ini

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error_reporting=E_ALL
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display_errors=1
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html_errors=1
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display_startup_errors=On
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log_errors=1
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always_populate_raw_post_data=-1
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upload_max_filesize=2000M
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post_max_size=2000M
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disable_functions=proc_open,popen,curl_exec,curl_multi_exec
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allow_url_fopen=On
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session.save_path=/home/web_user
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implicit_flush=1
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output_buffering=0

‎build/php-5.6.js

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