| php-standard-library/ansi | Pure functions for constructing ANSI escape sequences - text styling, colors, cursor movement, and screen manipulation |  |
| php-standard-library/async | Fiber-based structured concurrency using cooperative multitasking |  |
| php-standard-library/binary | Typed functions for encoding and decoding binary data, replacing pack()/unpack() with a clear, type-safe API |  |
| php-standard-library/cache | Async-safe in-memory LRU cache with per-key atomicity |  |
| php-standard-library/channel | Message-passing channels for async communication, inspired by Go and Rust |  |
| php-standard-library/cidr | Utilities for working with CIDR (Classless Inter-Domain Routing) notation for IPv4 and IPv6 |  |
| php-standard-library/class | Type-safe wrappers around PHP class reflection and existence checks |  |
| php-standard-library/collection | Generic, object-oriented Vector, Map, and Set collections with immutable and mutable variants |  |
| php-standard-library/comparison | Interfaces and functions for type-safe, consistent value comparison |  |
| php-standard-library/compression | Streaming compression and decompression abstractions for IO handles |  |
| php-standard-library/crypto | Comprehensive cryptography toolkit built on libsodium - symmetric, asymmetric, AEAD, signing, key exchange, and KDF |  |
| php-standard-library/data-structure | Classic data structures: Queue (FIFO), Stack (LIFO), and PriorityQueue |  |
| php-standard-library/date-time | Immutable, timezone-aware date and time types with Duration, Period, and Interval |  |
| php-standard-library/default | DefaultInterface for classes to provide standardized default instances |  |
| php-standard-library/dict | Functions for creating and transforming associative arrays with preserved keys |  |
| php-standard-library/dns | Async DNS resolver with connection pooling, EDNS0, DNS-over-TLS, DNS-over-HTTPS, and cross-platform system configuration |  |
| php-standard-library/dnssec | DNSSEC validation with full trust chain verification, RRSIG signatures, and NSEC/NSEC3 proofs |  |
| php-standard-library/either | General-purpose disjoint union type (Left/Right) for values with two possible types |  |
| php-standard-library/either-or-both | |  |
| php-standard-library/encoding | Binary-to-text encoding: Base64, Hex, and QuotedPrintable with streaming support |  |
| php-standard-library/env | Functions for inspecting and modifying environment variables, working directory, and paths |  |
| php-standard-library/file | Typed file handles for reading and writing with write modes and advisory locking |  |
| php-standard-library/filesystem | Type-safe functions for file system operations with proper exception handling |  |
| php-standard-library/foundation | Exceptions, Ref, and invariant functions |  |
| php-standard-library/fun | Functional programming utilities for composing, decorating, and controlling function execution |  |
| php-standard-library/graph | Immutable directed and undirected graph data structures with BFS, DFS, topological sort, and cycle detection |  |
| php-standard-library/h2 | HTTP/2 binary framing protocol implementation |  |
| php-standard-library/hash | Cryptographic and non-cryptographic hashing with Algorithm enum, timing-safe comparison, and HMAC |  |
| php-standard-library/hpack | RFC 7541 HPACK header compression for HTTP/2 |  |
| php-standard-library/html | HTML entity encoding, decoding, and tag stripping |  |
| php-standard-library/http-client | Async HTTP client with connection pooling, HTTP/2 multiplexing, middleware, and composable decorators for redirects and retries |  |
| php-standard-library/http-message | HTTP message abstractions for requests, responses, and headers |  |
| php-standard-library/interface | Type-safe wrappers around PHP interface reflection and existence checks |  |
| php-standard-library/interoperability | Interfaces for converting between PSL types and PHP stdlib/intl equivalents |  |
| php-standard-library/io | Handle-based I/O abstractions - composable, testable, and async-ready |  |
| php-standard-library/ip | Immutable, binary-backed value object for IPv4 and IPv6 addresses with parsing, classification, and comparison |  |
| php-standard-library/iri | RFC 3987 compliant Internationalized Resource Identifier (IRI) parsing, construction, and manipulation |  |
| php-standard-library/iter | Utility functions for inspecting and reducing iterables - arrays, generators, and iterators |  |
| php-standard-library/json | JSON encoding and decoding with typed exceptions and sensible defaults |  |
| php-standard-library/locale | Backed enum with 700+ locale identifiers for type-safe internationalization |  |
| php-standard-library/math | Mathematical functions with strict typing and predictable error handling |  |
| php-standard-library/message | RFC 5322 internet message construction and parsing |  |
| php-standard-library/mime | MIME media types, multipart body construction, content sniffing, S/MIME cryptography, and DKIM signing |  |
| php-standard-library/network | Shared interfaces and types for all networking components (TCP, Unix, TLS, UDP) |  |
| php-standard-library/observer | Generic Observer pattern interfaces |  |
| php-standard-library/option | Option type (Some/None) replacing nullable types with explicit presence semantics |  |
| php-standard-library/os | Type-safe operating system detection via OperatingSystemFamily enum |  |
| php-standard-library/password | Secure password hashing and verification with bcrypt and Argon2 |  |
| php-standard-library/php-standard-library | PHP Standard Library |  |
| php-standard-library/phpstan-extension | PHPStan PSL extension |  |
| php-standard-library/process | Typed, non-blocking API for spawning and managing child processes |  |
| php-standard-library/promise | Promise interface for deferred computations - resolved or rejected |  |
| php-standard-library/psalm-plugin | Psalm plugin for the PHP Standard Library |  |
| php-standard-library/pseudo-random | Fast pseudo-random number generation using Mersenne Twister |  |
| php-standard-library/punycode | RFC 3492 Punycode encoding and decoding for internationalized domain names |  |
| php-standard-library/random-sequence | Object-oriented random number sequences with injectable, seedable implementations |  |
| php-standard-library/range | Range types for integer sequences with iteration support |  |
| php-standard-library/regex | Type-safe regular expressions with typed capture groups and proper error handling |  |
| php-standard-library/result | Result type capturing success or failure as a value for controlled error handling |  |
| php-standard-library/runtime | Introspection into PHP runtime - version, extensions, SAPI, and build flags |  |
| php-standard-library/secure-random | Cryptographically secure random data generation for tokens, passwords, and nonces |  |
| php-standard-library/shell | Shell command execution with argument escaping and error output management |  |
| php-standard-library/smtp | RFC 5321 SMTP client for sending messages |  |
| php-standard-library/socks | SOCKS5 proxy connector for tunneling TCP connections (RFC 1928) |  |
| php-standard-library/str | Unicode-aware string functions replacing PHP mb_* and standard string functions |  |
| php-standard-library/tcp | Non-blocking TCP client and server connections with connection pooling and retry |  |
| php-standard-library/terminal | Full-featured TUI framework with widgets, events, and diff-based rendering |  |
| php-standard-library/tls | Transport-agnostic TLS encryption for any connected stream |  |
| php-standard-library/trait | Type-safe wrappers around PHP trait reflection and existence checks |  |
| php-standard-library/tree | Immutable tree data structures and operations for hierarchical data |  |
| php-standard-library/type | Runtime type validation implementing Parse, Don't Validate - coerce and assert unstructured input into well-typed data |  |
| php-standard-library/udp | Non-blocking API for sending and receiving datagrams over UDP |  |
| php-standard-library/unix | Non-blocking Unix domain socket connections |  |
| php-standard-library/uri | RFC 3986 compliant URI parsing, construction, and manipulation |  |
| php-standard-library/url | Strict URL type with scheme and authority validation, default port stripping, and URI/IRI conversion |  |
| php-standard-library/vec | Functions for creating and transforming sequential, 0-indexed arrays (lists) |  |