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Example code of improved/type

Informations about the package type

improved PHP library

type handling

PHP Scrutinizer Code Quality Code Coverage Packagist Stable Version Packagist License

Library for type handling.

This library provides a set of consistent functions for PHP. You should always use these types rather than the ones provided by PHP natively.

Installation

composer require improved/type

types

Reference

type_is

bool type_is(mixed $var, string|string[] $type)

Return true if variable has the specified type.

As type you can specify any internal type, including callable and object, a class name or a resource type (eg stream resource).

Typed arrays or iteratators are not supported, as it would require looping through them.

A question mark can be added to a class to accept null, eg "?string" is similar to using ["string", "null"].

type_check

mixed type_check(mixed $var, string|string[] $type, Throwable $throwable = null)

Validate that a variable has a specific type. The same types cas in type_is() can be used.

Typed arrays or iteratators are not supported. Use iterable_check_type instead.

By default a TypeError is thrown. Optionally you can pass an exception instead.

The message may contain a %s, which is replaced by the type description of $var. It optionally may contain a second %s which is replaced by the description of the required type. Use sprintf positioning to use the required type first.

If the message or the exception or error contains a %, a new throwable of the same type is created with the filled out message.

The function returns $var if the type matches, so you can use it while setting a variable.

A question mark can be added to a class to accept null, eg "?string" is similar to using ["string", "null"].

type_cast

mixed type_cast(mixed $var, string $type, Throwable $throwable = null)

Check the variable has a specific type or can be casted to that type, otherwise throw a TypeError or exception.

This function is similar to type_check, with the difference that is will cast the value in some cases

from to
string int only numeric strings and < PHP_INT_MAX
string float only numeric strings
int bool only 0 or 1
int float
int string
float int if float < PHP_INT_MAX
float string
bool int
array object \ stdClass if array has no numeric keys
object string if only has __toString() method
object array \ iterable only stdClass objects
null any scalar
null array
null object \ stdClass

In contrary to type_is and type_check, only one type may be specified.

A question mark can be added to a class to accept null, eg ?string will try to cast everything to a string except null.

type_describe

string type_describe(mixed $var, bool $detailed = false)

Get the type of a variable in a descriptive way to using in an (error) message.

For scalar, null and array values, the result is the same a gettype. Except for floats which will return float rather than double.

Objects are have their class name, appended with object. For resources the resource type is returned, appended with resource.

The detailed option describes both the value an type. This is similar to what is used in the error messages of type_check and type_cast.

All versions of type with dependencies

PHP Build Version
Package Version
Requires php Version >=7.2.0
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