Freelance “time card” calculator

<p>Enter the times, separated by new lines or whatever. Whitespace does not matter.</p>
<form method="post" action="">
	<textarea name="times" style="width: 300px; height: 200px;"></textarea><br /><button type="submit">Go</button>
</form>

<?php
$hourly_rate = 30; // Change this to your wage
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	$arr = array();
	$x = 0;
	$str = $_POST['times'];
	$pos = strpos($str, '(');
	while ($pos > 0) {
		$pos2 = strpos($str, ')');
		$arr[$x] = substr($str, $pos + 1, $pos2 - $pos - 1);
		$str = substr($str, $pos2 + 2, strlen($str));
		$pos = strpos($str, '(');
		$x++;
	}
 
	$hours = 0;
	$minutes = 0;
 
	for ($x = 0; $x < count($arr); $x++) {
		$arr2 = explode(':', $arr[$x]);
		$minutes += $arr2[1];
		if ($minutes >= 60) {
			$hours = $hours + 1;
			$minutes -= 60;
		}
		$hours += $arr2[0];
	}
 
	$total = $hours * 15 + $minutes / 60 * 15;
 
	echo "<p>Worked <b>$hours hours</b> and <b>$minutes minutes</b> (" . number_format($hours + $minutes / 60, 2, '.', '') . ")<br />That's $" . number_format(($hours + $minutes / 60) * $hourly_rate, 2, '.', '') . "</p>";
}
?>

<%
hourly_rate = 30 'Change this to your wage
If Request.ServerVariables("REQUEST_METHOD") = "POST" Then
	ReDim arr(0)
	x = 0
	str = Request("times")
	pos = InStr(str, "(")
	While pos > 0
		ReDim Preserve arr(x)
		pos2 = InStr(str, ")")
		arr(x) = Mid(str, pos + 1, pos2 - pos - 1)
		str = Mid(str, pos2 + 2, Len(str))
		pos = InStr(str, "(")
		x = x + 1
	Wend
 
	hours = 0
	minutes = 0
 
	For x = 0 To UBound(arr)
		arr2 = Split(arr(x), ":")
 
		minutes = minutes + CInt(arr2(1))
 
		If minutes >= 60 Then
			hours = hours + 1
			minutes = minutes - 60
		End If
 
		hours = hours + CInt(arr2(0))
	Next
 
	total = hours * 15 + minutes / 60 * 15
 
	Response.Write("<p>Worked <b>" & hours & " hours</b> and <b>" & minutes & " minutes</b> (" & FormatNumber(hours + minutes / 60, 2) & ")<br />That's " & FormatCurrency((hours + minutes / 60), 2) & "</p>")
End If
%>