11. Write a program in PHP to add three numbers.
<!doctype html>
<html>
<head>
<title>Year : 2015 | Q : 11</title>
</head>
<body>
<?php
$sum = 0;
if(isset($_POST['add']))
$sum = $_POST['n1']+$_POST['n2']+$_POST['n3'];
?>
<form method = 'post'>
Number 1: <input type = 'number' name = 'n1' value = '0'><br>
Number 2: <input type = 'number' name = 'n2' value = '0'><br>
Number 3: <input type = 'number' name = 'n3' value = '0'><br>
<input type = 'submit' name = 'add' value = 'Add'>
<input type = 'number' name = 'res' value = '<?php echo $sum;?>' disabled>
</form>
</body>
</html>
12. Write a program to display the first and last character of a string.
<!doctype html>
<html>
<head>
<title>Year : 2015 | Q : 12</title>
</head>
<body>
<?php
$str = 'My name is something';
echo "Given string: '".$str."'.<br>";
echo "First character of the string is : '".substr($str,0,1)."', and the last character of the string is: '".substr($str,strlen($str)-1)."'.";
?>
</body>
</html>
13. Create two integer arrays of size 5 each with data in them. Then display sum of all the numbers of both arrays.
<!doctype html>
<html>
<head>
<title>Year : 2015 | Q : 13</title>
</head>
<body>
<?php
function sumarr($arr)
{
$sum = 0;
foreach($arr as $data)
$sum+=$data;
return $sum;
}
function disarr($arr)
{
foreach($arr as $data)
echo " $data ";
}
$a1 = array(5,10,15,20,25);
$a2 = array(1,2,3,4,5);
echo "<br>First array: ";
disarr($a1);
echo "<br>Sum of the first array: ".sumarr($a1);
echo "<br>Second array: ";
disarr($a2);
echo "<br>Sum of the second array: ".sumarr($a2);
?>
</body>
</html>
14. Write a program in PHP to store “coding in PHP” in a file named “coding.txt”.
<!doctype html>
<html>
<head>
<title>Year : 2015 | Q : 14</title>
</head>
<body>
<?php
$str = 'coding in PHP';
$f = fopen('coding.txt','w');
if(fwrite($f,$str))
echo "Successfully wrote 'coding in PHP' in the file named 'coding.txt'.";
else
echo "Error in writing 'coding in PHP' in the file named 'coding.txt'.";
fclose($f);
?>
</body>
</html>
15. Make the following table using PHP.
| Name | Age | Gender |
| R | 2 | M |
| A | 20 | F |
<!doctype html>
<html>
<head>
<title>Year : 2015 | Q : 15</title>
<style>
td{
width: 75px;
}
</style>
</head>
<body>
<?php
$arr = array(array('R',21,'M'),array('A',20,'F'));
echo "<table border = '1' cellspacing = '0' cellpadding = '10'>";
echo "<tr align = 'left'> <td>Name</td> <td>Age</td> <td>Gender</td> </tr>";
foreach($arr as $data)
{
echo "<tr align = 'left'>";
echo "<td>".$data[0]."</td>";//Name
echo "<td>".$data[1]."</td>";//Age
echo "<td>".$data[2]."</td>";//Gender
echo "</tr>";
}
?>
</body>
</html>
