How to Convert Numbers with Comma Decimal Points (e.g., \'1.512.523,55\') to Floats in PHP?

Converting a Number with Comma Decimal Point to Float

Problem:

You have a list of numerical values where commas are used as decimal points and dots as thousand separators. You need to convert these values to floating-point numbers for mathematical operations.

Solution:

While you could consider using number_format, it does not support the specific format you've described. Using str_replace is indeed appropriate for this task, despite the potential for repeated replacements.

To convert the values to float:

1. Use str_replace to replace the thousand separator dots with an empty string.
2. Use str_replace again to replace the comma decimal point with a dot.
3. Use floatval to convert the resulting string to a float.

$string_number = '1.512.523,55';

// Replace dots with empty string (removing thousand separator).
$number_with_decimal_comma = str_replace('.', '', $string_number);

// Replace comma with dot (converting decimal point).
$number = floatval(str_replace(',', '.', $number_with_decimal_comma));

echo $number;

This method eliminates the need for multiple str_replace calls by performing both replacements in a single chain. It also ensures efficient conversion to a float value.

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