ZSchema

Table of contents

• Introduction
• Basic usage
• Types
• Strings
  • Validations
  • Transforms
• Numbers
  • Types
  • Validations
  • Transforms
• Arrays
• Methods
• Messages

Introduction

Validates schemas and datatypes in a simple way, strongly inspired by Zod

Basic usage

Creating a simple integer schema

include_once "./zschema.php";

// creating the integer schema
$int_schema = ZSchema::int();

// parsing
print_r($int_schema->safe_parse(5)); // output: ["success" => true]
print_r($int_schema->safe_parse("hello")); // output: ["success" => false, "message" => ...]

Creating a array schema

include_once "./zschema.php";

// creating user schema
$user_schema = ZSchema::array([
    "first_name" => ZSchema::string()->min_length(3)->required(),
    "last_name" => ZSchema::string()->min_length(3),
    "email" => ZSchema::string()->email()->required(),
]);

print_r($user_schema->safe_parse([
    "first_name" => "John",
    "last_name" => "Doe",
    "email" => "john@doe.com",
])); // output: ["success" => true]

print_r($user_schema->safe_parse([
    "first_name" => "John",
    "last_name" => "Doe",
    "email" => "johndoe.com",
])); // output: ["success" => false, "message" => "email is not a valid email"]

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Types

ZSchema::int()
ZSchema::float()
ZSchema::string()
ZSchema::bool()
ZSchema::array()
ZSchema::null()

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Strings

Strings have many types of specific validations

Strings validations

ZSchema::string()->required()
ZSchema::string()->not_empty()
ZSchema::string()->max_length() // the arg must be a integer, example: max_length(5)
ZSchema::string()->min_length() // the arg must be a integer, example: min_length(5)
ZSchema::string()->length() // the arg must be a integer, example: max_length(5)
ZSchema::string()->email()
ZSchema::string()->url()
ZSchema::string()->uuid()
ZSchema::string()->ipv4()
ZSchema::string()->ipv6()
ZSchema::string()->regex() // the arg must be a regex
ZSchema::string()->includes() // the arg must be a string, example: includes("http")
ZSchema::string()->not_includes() // the arg must be a string, example: not_includes("google")
ZSchema::string()->starts_with() // the arg must be a string, example: starts_with("http")
ZSchema::string()->not_starts_with() // the arg must be a string, example: not_starts_with("http")
ZSchema::string()->ends_with() // the arg must be a string, example: ends_with(".com")
ZSchema::string()->not_ends_with() // the arg must be a string, example: not_ends_with(".exe")
ZSchema::string()->date() // under review
ZSchema::string()->time() // under review
ZSchema::string()->datetime() // under review

Strings transforms

The transforms methods modify the value returned by the parse

ZSchema::string()->trim()
ZSchema::string()->to_lower_case()
ZSchema::string()->to_upper_case()

Example

echo ZSchema::string->to_lower_case()->parse("Hello World!") // output: "hello world!"

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Numbers

Validation and transformations methods work for both int and float

Numbers types

ZSchema::int()
ZSchema::float()

Numbers validations

ZSChema::int()->required()
ZSChema::int()->not_empty()
ZSChema::int()->max()  // the arg must be a integer, example: max(100)
ZSChema::int()->min() // the arg must be a integer, example: min(0)
ZSChema::int()->positive()
ZSChema::int()->nonpositive()
ZSChema::int()->negative()
ZSChema::int()->nonnegative()

Numbers transforms

The transforms methods modify the value returned by the parse

ZSchema::int()->to_max() // the arg must be a integer, example: to_max(100)
ZSchema::int()->to_min() // the arg must be a integer, example: to_min(0)

Example

echo ZSchema::int->to_max(25)->parse(10000) // output: 25

Arrays

The value of the array keys must be an instance of ZSchema, otherwise it will throw an error when creating a schema.

Example:

// BAD
ZSchema::array([
    "email" =>...
])

// GOOD
ZSchema::array([
    "email" => ZSchema::string()->email()
])

the value of the key can be any type of zschema

ZSchema::array([
    "day" => ZSchema::int()
])

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Methods

parse

The parse method executes the validations specified in the method value, if the validation fails it will throw an exception with an error message

ZSchema::int()->parse(5) // return 5
ZSchema::int()->parse("hola") // throws Error

safe_parse

Unlike the parse method, when the validation fails it will not throw an error, instead it will return an array with the message and the status of the validation.

ZSchema::int()->safe_parse(5) // return ["success" => true, "value" => 5]
ZSchema::int()->safe_parse("hola") // return ["success" => false, message => ..., "value" => "hola"]

get_validations()

ZSchema::string()->email()->get_validations() // return ["email" => true]

get_transforms()

ZSchema::string()->to_lower_case()->get_transforms() // return ["to_lower_case" => true]

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Messages

Type error message

// by default
ZSchema::int()->safe_parse("world") // return ["sucess" => false, "message" => "world is not a valid int", ...]

// with custom type error message
ZSchema::int("The value is not a number")->safe_parse("world") // return ["sucess" => false, "message" => "The value is not a number", ...]

but for arrays the second argument is the message

$user_schema = ZSchema::array([
    "first_name" => ZSchema::string()->min_length(3)->required(),
    "last_name" => ZSchema::string()->min_length(3),
    "email" => ZSchema::string()->email()->required(),
], "The user value is not valid");

Validations error messages

for validations it is a bit more of the same, in validations where no argument is required to validate, the argument will be the error message, if the validation method has an argument, then it will be the second argument

ZSchema::string()->email("The e-mail is not valid")->max_length(100, "the e-mail must not contain more than 100 characters")

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