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Parsing Currency Strings in PHP
When parsing currency strings in PHP, it can be challenging to handle varying decimal separators depending on the current locale. While using str_replace() to convert commas to dots can work for some cases, it relies on the assumption that the decimal separator is always a dot.
A More Robust Solution
To address this limitation and cater to multiple locales, a more complex but versatile solution is to employ regular expressions (regex). Here's how to do it:
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); }
Explanation
Caveats
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