PHP is number

To determine an input or variable value is a number, you can use the is_number($variable) function.
<title>PHP Check number</title>
<form action="isnumber.php" method="get">
<label for="txtname">Number1:</label>
<input type="textbox" name="txtnum1">
<label for="txtname">Number2:</label>

<input type="textbox" name="txtnum2">

<input type="submit" name="sm" value="Sum">

if (is_numeric($num1) && is_numeric($num2)){
echo "Total:".$total;
else echo "Invalid input";

Posted by: Lavy | post date: 02-04-2013 | Subject: PHP

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