README

Parse float by automatic floating point detection or parse float value by Intl extension.

Installation

composer require mvccore/ext-tool-locale-floatparser

Usage

Non Intl Automatic Floating Point Detection

Non Intl parsing with automatic floating point detection has better results for unexpected user inputs like: '1.2 3' => 1.23 (float) '1.2 3 and 4' => 1.234 (float) '-1,234,567.89' => -1234567.89 (float) '-1.234.567,89' => -1234567.89 (float) '-1 234 567.89' => -1234567.89 (float) '-1 234 567,89' => -1234567.89 (float)

Example

$autoParser = \MvcCore\Ext\Tools\Locales\FloatParser::CreateInstance(
	'en',	// international language code, lowercase 
	'US', 	// international country code, uppercase
	FALSE	// FALSE (by default) to prefer automatic floating point detection
);
var_dump($autoParser->Parse('-1,234,567.89'));	// -1234567.89	(float)
var_dump($autoParser->Parse('-1.234.567,89'));	// -1234567.89	(float)
var_dump($autoParser->Parse('-1 234 567.89'));	// -1234567.89	(float)
var_dump($autoParser->Parse('-1 234 567,89'));	// -1234567.89	(float)
var_dump($autoParser->Parse('1.2 3 and 4'));	// 1.234		(float)
var_dump($autoParser->Parse('1.2 3'));			// 1.23			(float)
// rest is the same as `Intl` floating point parser bellow:
var_dump($autoParser->Parse('1.8e308'));		// INF			(float)
var_dump($autoParser->Parse('1.79e308'));		// 1.79E+308	(float)
var_dump($autoParser->Parse('21474836470'));	// 21474836470	(float)
var_dump($autoParser->Parse('123'));			// 123.0		(float)
var_dump($autoParser->Parse('-3.14'));			// -3.14		(float)
var_dump($autoParser->Parse('1.2e3'));			// 1200			(float)
var_dump($autoParser->Parse('7E-10'));			// 7.0E-10		(float)
var_dump($autoParser->Parse('bob-1.3e3'));		// -1300		(float)
var_dump($autoParser->Parse('nothing'));		// NULL
var_dump($autoParser->Parse(TRUE));				// NULL
var_dump($autoParser->Parse([]));				// NULL
var_dump($autoParser->Parse(new \stdClass));	// NULL

Intl Parsing

Intl parser needs to set up language and locale more precisely to user input expectations, which is more error prone in very foreing languages and their locale conventions.

Mostly all languages use floating point character . or ,, but Intl library has sometimes not the same values for floating point char in specific locale as operation system has for specific locale, there is a little mess. That's why sometimes there is better to use non Intl floating point parsing.

Example

$intlParser = \MvcCore\Ext\Tools\Locales\FloatParser::CreateInstance(
	'en',	// international language code, lowercase 
	'US', 	// international country code, uppercase
	TRUE	// TRUE to prefer `Intl` extension parsing
);
var_dump($intlParser->Parse('-1,234,567.89'));	// -1234567.89	(float)
var_dump($intlParser->Parse('-1 234 567,89'));	// -1234567		(float)
var_dump($intlParser->Parse('-1 234 567.89'));	// -1234567.89	(float)
var_dump($intlParser->Parse('-1 234 567,89'));	// -1234567		(float)
var_dump($intlParser->Parse('1.2 3 and 4'));	// 1.2			(float)
var_dump($intlParser->Parse('1.2 3'));			// 1.2			(float)
// rest is the same as non `Intl` floating point parser above:
var_dump($autoParser->Parse('1.8e308'));		// INF			(float)
var_dump($autoParser->Parse('1.79e308'));		// 1.79E+308	(float)
var_dump($autoParser->Parse('21474836470'));	// 21474836470	(float)
var_dump($intlParser->Parse('123'));			// 123.0		(float)
var_dump($intlParser->Parse('-3.14'));			// -3.14		(float)
var_dump($intlParser->Parse('1.2e3'));			// 1200			(float)
var_dump($intlParser->Parse('7E-10'));			// 7.0E-10		(float)
var_dump($intlParser->Parse('bob-1.3e3'));		// -1300		(float)
var_dump($intlParser->Parse('nothing'));		// NULL
var_dump($intlParser->Parse(TRUE));				// NULL
var_dump($intlParser->Parse([]));				// NULL
var_dump($intlParser->Parse(new \stdClass));	// NULL