Number

PHP String Function: Number
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number_format()

number_format(float $num, int $decimals = 0, ?string $decimal_separator = ".", ?string $thousands_separator = ","): string

$number = 1234.56;

// english notation (default)
$english_format_number = number_format($number);
// 1,235

// French notation
$nombre_format_francais = number_format($number, 2, ',', ' ');
// 1 234,56

$number = 1234.5678;

// english notation without thousands separator
$english_format_number = number_format($number, 2, '.', '');
// 1234.57

Reference