Online PHP editor | rfc for o58KM

@ 2024-09-17T13:01:40Z

<?php

function scientific2decimal($num, $decimal_separator = ".", $thousands_separator = ",")
{
    if (!preg_match('!\d+(\.(\d+))?e([+-]?)(\d+)$!i', $num, $matches)) {
        return $num;
    }
    
    list(,,$decimals, $sign, $exponent) = $matches;
    $sign = $sign ?: "+";
    $actual_decimals = strlen($decimals);
    if ($sign === '+') {
        $number_of_decimals = max(0, $actual_decimals - $exponent);
    } else {
        $number_of_decimals = $exponent + $actual_decimals;
    }
    return number_format($num, $number_of_decimals, $decimal_separator, $thousands_separator);
}

function number2decimal($number, $decimal_separator = ".", $thousands_separator = ",")
{
   if (!is_numeric($number)) {
       return $number;
   }
   $parts = explode('e', strtolower($number));    
   if (count($parts) != 2) {
       return $number;
   }
   [$base, $exponent] = $parts;
   $number_of_decimals = -$exponent + strlen($base) - strrpos($base, '.') - 1;
   return number_format($number, $number_of_decimals, $decimal_separator, $thousands_separator);
}

$test = [
    'aaa',
    'eee',
    '123ert',
    7,
    1e0,
    0.000021,
    '1e3',
    '1.1337228E-3',
    '1.1337228E-6',
    '236.234e-5',
    '1.0002E3',
    '1.13372223434E+6',
    '2.133333E-5',
    123456789842794767576576,
    
];
foreach ($test as $num) {
    echo $num, ": ", scientific2decimal($num), "\n";
}
echo "=============\n";
foreach ($test as $num) {
    echo $num, ": ", number2decimal($num), "\n";
}

Output for git.master_jit, git.master, rfc.property-hooks: aaa: aaa eee: eee 123ert: 123ert 7: 7 1: 1 2.1E-5: 0.000021 1e3: 1,000 1.1337228E-3: 0.0011337228 1.1337228E-6: 0.0000011337228 236.234e-5: 0.00236234 1.0002E3: 1,000.2 1.13372223434E+6: 1,133,722.23434 2.133333E-5: 0.00002133333 1.2345678984279E+23: 123,456,789,842,794,775,576,576 ============= aaa: aaa eee: eee 123ert: 123ert 7: 7 1: 1 2.1E-5: 0.000021 1e3: 1,000 1.1337228E-3: 0.0011337228 1.1337228E-6: 0.0000011337228 236.234e-5: 0.00236234 1.0002E3: 1,000.2 1.13372223434E+6: 1,133,722.23434 2.133333E-5: 0.00002133333 1.2345678984279E+23: 123,456,789,842,789,994,070,016

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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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