Utility library for numerics. Float versions of ceil(), floor() and rand() with precision. An open minded numeric parser plus additional functions.

Current version supports PHP 5.6 and 7.*.

Installation

Install with Composer;

composer require phrity/util-numerics

The Numerics class

Class synopsis

Phrity\Util\Numerics {

    /* Static methods */
    public static ceil(number $number, int $precision = 0) : float
    public static floor(number $number, int $precision = 0) : float
    public static rand(number $min, number $max, int $precision = 0) : float
    public static parse(mixed $numeric) : float
    public static precision(number $number) : int
}

Ceil method

Round fractions up, according to precision specifier. A precision of 0 corresponds to PHP ceil() function, except it returns float instead of integer. Precision can also be negative.

Numerics::ceil(1234.5678,  2) // 1234.57
Numerics::ceil(1234.5678,  1) // 1234.60
Numerics::ceil(1234.5678,  0) // 1235.00
Numerics::ceil(1234.5678, -1) // 1240.00
Numerics::ceil(1234.5678, -2) // 1300.00

Floor method

Round fractions down, according to precision specifier. A precision of 0 corresponds to PHP floor() function, except it returns float instead of integer. Precision can also be negative.

Numerics::floor(1234.5678,  2) // 1234.56
Numerics::floor(1234.5678,  1) // 1234.50
Numerics::floor(1234.5678,  0) // 1234.00
Numerics::floor(1234.5678, -1) // 1230.00
Numerics::floor(1234.5678, -2) // 1200.00

Rand method

Float random number with precision. Precision can also be negative. Returns float, or null if impossible to generate result.

Numerics::rand(0, 10) // 0.0 … 10.0
Numerics::rand(0, 100, 2) // 0.00 … 100.00
Numerics::rand(-100, 100, 4) // -100.0000 … 100.0000
Numerics::rand(0.01, 0.97, 4) // 0.0100 … 0.9700
Numerics::rand(9, 11, -1) // 10.0
Numerics::rand(90, 110, -2) // 100.0

Parse method

Numeric parser. Parses number by evaluating input rather than using locale or making explicit assumtions. Returns float, or null if provided input can not be parsed.

// Integer and float input
Numerics::parse(1234.56) // 1234.56
Numerics::parse(1234) // 1234.00

// String input
Numerics::parse('1234.56') // 1234.56
Numerics::parse('1234,56') // 1234.56
Numerics::parse('1 234.56') // 1234.56
Numerics::parse('1 234,56') // 1234.56
Numerics::parse('1,234.56') // 1234.56
Numerics::parse('1.234,56') // 1234.56

// String input
Numerics::parse(' 1 234.56 ') // 1234.56
Numerics::parse('-1,234.56') // -1234.56
Numerics::parse('+1.234,56') // 1234.56
Numerics::parse('.56') // 0.56
Numerics::parse(',56') // 0.56

Precision method

Count number of relevant decimals in a number.

Numerics::precision(12) // 0
Numerics::precision(12.0) // 0
Numerics::precision(12.34) // 2

Versions

• 1.2 - rand() and precision() methods
• 1.1 - parse() method
• 1.0 - ceil() and floor() methods