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@ 2015-10-10T06:26:09Z

<?php
var_dump(encodeFloat(1.1234567890123456, 13));

function encodeFloat($float, $precision)
{
    $precision = max(1, (int) $precision);
    $log = (int) floor(log(abs($float), 10));

    if (abs($float) < 9007199254740992.0 && $log > -5 && abs($log) < $precision) {
        return $this->formatFloat($float, $precision - $log - 1);
    }

    // Deal with overflow that results from rounding
    $log += (int) (round(abs($float) / pow(10, $log), $precision - 1) / 10);
    $string = $this->formatFloat($float / pow(10, $log), $precision - 1);

    return sprintf('%sE%+d', $string, $log);
}

function formatFloat($float, $digits)
{
    $digits = max((int) $digits, 1);
    $string = rtrim(number_format($float, $digits, '.', ''), '0');

    return substr($string, -1) === '.' ? $string . '0' : $string;
}

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Using $this when not in object context in /in/9G9cX:10 Stack trace: #0 /in/9G9cX(2): encodeFloat(1.1234567890123, 13) #1 {main} thrown in /in/9G9cX on line 10
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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