Unformat money when parsing in PHP

This is a bit more complex/ slow solution, but works with all locales. @rlenom's solution work only with dots as decimal separator, and some locales, like Spanish, use the comma as decimal separator.

<?php

public function getAmount($money)
{
    $cleanString = preg_replace('/([^0-9\.,])/i', '', $money);
    $onlyNumbersString = preg_replace('/([^0-9])/i', '', $money);

    $separatorsCountToBeErased = strlen($cleanString) - strlen($onlyNumbersString) - 1;

    $stringWithCommaOrDot = preg_replace('/([,\.])/', '', $cleanString, $separatorsCountToBeErased);
    $removedThousandSeparator = preg_replace('/(\.|,)(?=[0-9]{3,}$)/', '',  $stringWithCommaOrDot);

    return (float) str_replace(',', '.', $removedThousandSeparator);
}

Tests:

['1,10 USD', 1.10],
['1 000 000.00', 1000000.0],
['$1 000 000.21', 1000000.21],
['£1.10', 1.10],
['$123 456 789', 123456789.0],
['$123,456,789.12', 123456789.12],
['$123 456 789,12', 123456789.12],
['1.10', 1.1],
[',,,,.10', .1],
['1.000', 1000.0],
['1,000', 1000.0]

Caveats: Fails if the decimal part have more than two digits.

This is an implementation from this library: https://github.com/mcuadros/currency-detector

You can use

• NumberFormatter::parseCurrency - Parse a currency number

Example from Manual:

$formatter = new NumberFormatter('de_DE', NumberFormatter::CURRENCY);
var_dump($formatter->parseCurrency("75,25 €", $curr));

gives: float(75.25)

Note that the intl extension is not enabled by default. Please refer to the Installation Instructions.

use ereg_replace

$string = "$100,000";
$int = ereg_replace("[^0-9]", "", $string); 
echo $int;

outputs

1000000

function toInt($str)
{
    return (int)preg_replace("/\..+$/i", "", preg_replace("/[^0-9\.]/i", "", $str));
}

---

Update

---

<?php
$string = array("$1,000,000.00","$1 000 000.00","1,000 000.00","$123","$123 456 789","0.15¢");
foreach($string as $s) {
    echo $s . " = " . toInt($s) . "\n"; 
}
function toInt($str)
{
    return preg_replace("/([^0-9\\.])/i", "", $str);
}
?>

Outputs

$1,000,000.00 = 1000000.00
$1 000 000.00 = 1000000.00
1,000 000.00 = 1000000.00
$123 = 123
$123 456 789 = 123456789
0.15¢ = 0.15

and if you cast it as an integer

<?php
$string = array("$1,000,000.00","$1 000 000.00","1,000 000.00","$123","$123 456 789","0.15¢");
foreach($string as $s) {
    echo $s . " = " . _toInt($s) . "\n";    
}
function _toInt($str)
{
    return (int)preg_replace("/([^0-9\\.])/i", "", $str);
}
?>

outputs

$1,000,000.00 = 1000000
$1 000 000.00 = 1000000
1,000 000.00 = 1000000
$123 = 123
$123 456 789 = 123456789
0.15¢ = 0

So there you have it. single line, one replace. you're good to go.