Can I output 12345678.9 to 12,345,678.90?_PHP Tutorial

Of course, there is a function number_format in PHP, function prototype: string thousands_sep
) )
For example:
                                                                                                            ( $num,2).'
';
    echo number_format($num,2,':').'
'; //This way of writing is wrong
    echo number_format(( $num,2,':','-').'
';
?>
The output result is:
12,345,679
12,345,678,90
Warning: Wrong parameter count for number_format() in /data/homepage/test/number_format.php on line 5
12-345-678:90





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TechArticleOf course, there is a function number_format in PHP, function prototype: string number_format (float number, int decimals, string dec_point , string thousands_sep ) For example: ? $num = 1234567...