How do i strip unwanted characters from an amount in php?
Question
I'm making a tool for school which determines how much weekly, monthly and daily you earn.
but the problem is that when i echo out the amounts. It gives me a bunch of other numbers which are not needed.
How do i remove them from my amounts?
When I input 52000 it gives me this.
Amount per week: $1000 Amount per day: $142.46575342466
The "per week" is correct and so is the per day amount, but why are there all those numbers on the end? i only need the first 2 after the decimal.
this is my code for php.
Sorry this isn't with the code tag things, i couldn't get them to work. it kept giving me error :(
<html>
<head>
<title>test</title>
</head>
<style type="text/css">
//style goes here.
</style>
<body>
<center>
<form action="" method="POST">
<input type="text" name="amount" placeholder="Amount you earn">
<input type="submit" name="submit">
</form>
<?php
if(isset($_POST['submit']))
{
if(!empty($_POST['amount']))
{
//хранить сумму в $amount
$amount=$_POST['amount'];
//добавить суммы
$weekly=$amount / 52;
$daily=$amount / 365;
//писать сумму
echo "Amount per week: <b>$" . $weekly . "</b>";
echo "<br>";
echo "Amount per day: <b>$". $daily . "</b>";
}
else
{
//сообщение, если вы не введете ничего
echo "<pre>Nothing entered, please enter an amount.";
}
}
?>
</body>
</html>
any help would be awesome :D
3 answers
solution1
3 2014-11-19 08:39:54
您应该使用此代码
echo "Amount per day: <b>$". number_format($daily/100, 2, ",", "") . "</b>";
solution2
1 ACCPTED 2014-11-19 08:40:32
"why are there all those numbers on the end?"
It is called math. To format the output you can use number_format()
echo '$' . number_format($daily, 2);
This will output:
$142.46
solution3
0 2014-11-19 08:41:50
除了数字格式之外，您还可以使用round（）函数：
echo "Amount per day: <b>$". round($daily, 2) . "</b>";
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