README

A collection of reusable multi-purpose functions for PHP libraries.

Overview

This library features some common functions to reduce overall duplication and avoid certain ugly workarounds (looking at you, phpstan...).

(we can't use array as class name because reasons)

method	description
`Arr::first(array $array):mixed`	Returns the first element of an array, `null` if the given array is empty.
`Arr::last(array $array):mixed`	Returns the last element of an array, `null` if the given array is empty.

method	description
`Crypto::sha256(string $data, bool $binary = false):string`	Generates an SHA-256 hash for the given value
`Crypto::sha512(string $data, bool $binary = false):string`	Generates an SHA-512 hash for the given value
`Crypto::randomString(int $length, string $keyspace = Crypto::ASCII_COMMON_PW):string`	Generates a secure random string of the given `$length`, using the characters (8-bit byte) in the given `$keyspace`.
`Crypto::createEncryptionKey():string`	Creates a new cryptographically secure random encryption key for use with `encrypt()` and `decrypt()` (returned in hexadecimal format)
`Crypto::encrypt(string $data, string $keyHex, int $format = Crypto::ENCRYPT_FORMAT_HEX):string`	Encrypts the given `$data` with `$key`, formats the output according to `$format` [binary, base64, hex]
`Crypto::decrypt(string $encrypted, string $keyHex, int $format = Crypto::ENCRYPT_FORMAT_HEX):string`	Decrypts the given `$encrypted` data with `$key` from input formatted according to `$format` [binary, base64, hex]

The Crypto class defines the following public constants:

pre-defined character maps for use with Crypto::randomString() as $keyspace:

NUMERIC: numbers 0-9
ASCII_LOWER: ASCII a-z
ASCII_UPPER: ASCII A-Z
ASCII_SYMBOL: ASCII printable symbols !"#$%&\'()*+,-./:;<=>?@[\]^_`{|}~
HEXADECIMAL: numbers 0-9 + ASCII a-f
ASCII_ALPHANUM: numbers 0-9 + ASCII a-z + A-Z
ASCII_PRINTABLE: numbers 0-9 + ASCII a-z + A-Z + printable symbols
ASCII_COMMON_PW: ASCII printable minus a few troublemaker symbols !#$%&()*+,-./:;<=>?@[]~_|

output and input $format for the functions Crypto::encrypt() and Crypto::decrypt(), respectively:

method	description
`Directory::exists(string $dir):bool`	Checks whether a directory exists
`Directory::isReadable(string $dir):bool`	Checks whether the given directory is readable
`Directory::isWritable(string $dir):bool`	Checks whether the given directory is writable
`Directory::create(string $dir, int $permissions = 0o777, bool $recursive = true):string`	Creates a directory
`Directory::remove(string $dir):bool`	Removes a directory

method	description
`File::exists(string $file):bool`	Checks whether a file exists
`File::isReadable(string $file):bool`	Checks whether the given file is readable
`File::isWritable(string $file):bool`	Checks whether the given file is writable
`File::realpath(string $path):string`	Returns the absolute real path to the given file or directory
`File::delete(string $file):bool`	Deletes a file
`File::load(string $file, int $offset = 0, int\|null $length = null):string`	reads the given file into a string
`File::save(string $file, string $data):int`	saves the given data string to the given file path
`File::loadJSON(string $file, bool $associative = false, int $flags = 0):mixed`	load a JSON string from file into an array or object (convenience)
`File::saveJSON(string $file, mixed $data, int $flags = Str::JSON_ENCODE_FLAGS_DEFAULT):int`	save to a JSON file (convenience)

(see Arr)

method	description
`Str::filter(array $mixed):array`	Filters an array and removes all elements that are not strings. Array keys are not retained
`Str::toUpper(array $strings):array`	Converts the strings in an array to uppercase
`Str::toLower(array $strings):array`	Converts the strings in an array to lowercase
`Str::startsWith(string $haystack, array $needles, bool $ignoreCase = false):bool`	Checks whether the given string starts with any of the given array of needles
`Str::containsAll(string $haystack, array $needles, bool $ignoreCase = false):bool`	Checks whether the given string (haystack) contains all of the given array of needles
`Str::containsAny(string $haystack, array $needles, bool $ignoreCase = false):bool`	Checks whether the given string (haystack) contains any of the given array of needles
`Str::jsonDecode(string $json, bool $associative = false, int $flags = 0):mixed`	Decodes a JSON string
`Str::jsonEncode(mixed $data, int $flags = self::JSON_ENCODE_FLAGS_DEFAULT):string`	Encodes a value into a JSON representation
`Str::base64encode(string $string, int $variant = SODIUM_BASE64_VARIANT_ORIGINAL):string`	Encodes a binary string to base64 (timing-safe)
`Str::base64decode(string $base64, int $variant = SODIUM_BASE64_VARIANT_ORIGINAL):string`	Decodes a base64 string into binary (timing-safe)

Use at your own risk!