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<?php
namespace Hamcrest\Type;
/*
Copyright (c) 2010 hamcrest.org
*/
use Hamcrest\Core\IsTypeOf;
/**
* Tests whether the value is numeric.
*/
class IsNumeric extends IsTypeOf
{
public function __construct()
{
parent::__construct('number');
}
public function matches($item)
{
if ($this->isHexadecimal($item)) {
return true;
}
return is_numeric($item);
}
/**
* Return if the string passed is a valid hexadecimal number.
* This check is necessary because PHP 7 doesn't recognize hexadecimal string as numeric anymore.
*
* @param mixed $item
* @return boolean
*/
private function isHexadecimal($item)
{
if (is_string($item) && preg_match('/^0x(.*)$/', $item, $matches)) {
return ctype_xdigit($matches[1]);
}
return false;
}
/**
* Is the value a numeric?
*
* @factory
*/
public static function numericValue()
{
return new self;
}
}
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