diff --git a/may18/arthmeticOp.php b/may18/arthmeticOp.php
new file mode 100644
index 0000000..e802a1a
--- /dev/null
+++ b/may18/arthmeticOp.php
@@ -0,0 +1,27 @@
+<?php
+$sum = 0;
+function sum($a, $b){
+	$sum = $a + $b;
+	return $sum;
+}
+function pro($a, $b){
+	return ($a * $b);
+}
+function div($a, $b){
+	return (round(($a / $b),2));
+}
+function diff($a, $b){
+     return ($a-$b);	
+}
+
+$num1 = 8;
+$num2 = 9;
+
+print("Sum is ".sum($num1, $num2));
+echo "<br>"; 
+print("Difference is ".diff($num1, $num2));
+echo "<br>";
+print("Product is ".pro($num1, $num2));
+echo "<br>";
+print("Division of ".$num1. " and " .$num2. " is ".div($num1, $num2));
+?>
\ No newline at end of file
diff --git a/may18/evenOdd.php b/may18/evenOdd.php
new file mode 100644
index 0000000..60e91d3
--- /dev/null
+++ b/may18/evenOdd.php
@@ -0,0 +1,7 @@
+<?php
+ $num = 9;
+ if($num%2==0)
+ 	echo $num." is even";
+ else
+ 	echo "$num is odd";
+?>
\ No newline at end of file
diff --git a/may18/fibNum.php b/may18/fibNum.php
new file mode 100644
index 0000000..79d47d0
--- /dev/null
+++ b/may18/fibNum.php
@@ -0,0 +1,10 @@
+<?php
+function fib($a){
+   if($a<=1)
+   	return $a;
+   return fib($a-1) + fib($a-2);
+}
+
+$n=10;
+echo $n." fibonacci is ".fib($n);
+?>
\ No newline at end of file
diff --git a/may18/fibSeries.php b/may18/fibSeries.php
new file mode 100644
index 0000000..d3abb12
--- /dev/null
+++ b/may18/fibSeries.php
@@ -0,0 +1,14 @@
+<?php
+ $num = 10;
+ $a = 0;
+ $b = 1;
+ $c = 0;
+ 
+ for($i = 1	; $i <= $num; $i++){
+ 	$c = $a + $b;
+ 	$a = $b;
+ 	$b = $c;
+ 	echo $b." ";
+ }
+
+?>
\ No newline at end of file
diff --git a/may18/hello_world.php b/may18/hello_world.php
new file mode 100755
index 0000000..1c969c7
--- /dev/null
+++ b/may18/hello_world.php
@@ -0,0 +1,9 @@
+<?php
+
+echo "Hello World";
+?>									
+
+
+
+
+
diff --git a/may18/mulTable.php b/may18/mulTable.php
new file mode 100644
index 0000000..8d2be7e
--- /dev/null
+++ b/may18/mulTable.php
@@ -0,0 +1,5 @@
+<?php
+$num = 15;
+for($i=1; $i<=10; $i++)
+  echo $num ." * ".$i. " = ". ($num * $i)."<br>"; 
+?>
\ No newline at end of file
diff --git a/may18/pattern.php b/may18/pattern.php
new file mode 100644
index 0000000..0069637
--- /dev/null
+++ b/may18/pattern.php
@@ -0,0 +1,8 @@
+<?php
+$n = 5;
+for($i = 1; $i <= $n; $i++){
+	for($j = 0; $j < $i; $j++)
+		echo "*";
+	echo "<br>";
+}
+?>
\ No newline at end of file
diff --git a/may18/primeCheck.php b/may18/primeCheck.php
new file mode 100644
index 0000000..e907e69
--- /dev/null
+++ b/may18/primeCheck.php
@@ -0,0 +1,12 @@
+<?php
+$a = 13;
+$s = 0;
+for($i=2; $i<20/2; $i++){
+	if($a%$i == 0)
+		$s++;
+}
+if($s != 0)
+ echo "$a is not a prime number";
+else
+ echo "$a is a prime number";  
+?>
diff --git a/may18/primeSeries.php b/may18/primeSeries.php
new file mode 100644
index 0000000..b7c4306
--- /dev/null
+++ b/may18/primeSeries.php
@@ -0,0 +1,15 @@
+<?php
+ $n = 50;
+ print("Prime numbers below $n are <br>");
+  for($i=1; $i<=$n; $i++)
+    {
+        $fact=0;
+        for($j=1; $j<=$n; $j++)
+        {
+            if($i%$j==0)
+                $fact++;
+        }
+        if($fact==2)
+           echo "$i <br>";
+    }
+?>
\ No newline at end of file
diff --git a/may18/reverseStr.php b/may18/reverseStr.php
new file mode 100644
index 0000000..877dc0f
--- /dev/null
+++ b/may18/reverseStr.php
@@ -0,0 +1,12 @@
+<?php
+  $restr = "";
+  function reverse($str){
+  	for($i=strlen($str)-1; $i>=0; $i--){
+  		$restr.=$str[$i];
+  	}
+  	return $restr;
+  }
+
+  $strEx = "smart commerce";
+  echo (reverse($strEx));
+?>
\ No newline at end of file
diff --git a/may18/sum.php b/may18/sum.php
new file mode 100644
index 0000000..9465be5
--- /dev/null
+++ b/may18/sum.php
@@ -0,0 +1,16 @@
+<?php
+$sum = 0;
+function sum($a, $b){
+	$sum = $a + $b;
+	return $sum;
+}
+function pro($a, $b){
+	$res = $a * $b;
+	return $res;
+}
+$num1 = 3;
+$num2 = 5;
+print("sum is ".sum($num1, $num2)); 
+print("Product is ".pro($num1, $num2))
+
+?>
\ No newline at end of file
diff --git a/may21/armstrongNum.php b/may21/armstrongNum.php
new file mode 100644
index 0000000..8ae0adc
--- /dev/null
+++ b/may21/armstrongNum.php
@@ -0,0 +1,15 @@
+<?php
+ $num = 407;
+ $sum = 0;
+ $rem = 0;
+ $temp = $num;
+ while($num>0){
+    $rem = $num%10;
+    $sum = $sum + ($rem * $rem * $rem);
+    $num/=10;
+ }
+ if($sum == $temp)
+ 	echo "$temp is Armstrong number";
+ else
+ 	echo "$temp is not armstrong number"
+?>
\ No newline at end of file
diff --git a/may21/arrayDemo.php b/may21/arrayDemo.php
new file mode 100644
index 0000000..62afc49
--- /dev/null
+++ b/may21/arrayDemo.php
@@ -0,0 +1,7 @@
+<?php
+$cities = array('Bengaluru', 'Mysuru', 'Mangalore', 'Delhi');
+echo "Listed cities are <br>";
+ foreach ($cities as $city) {
+ 	echo "$city <br>";
+ }
+?>
\ No newline at end of file
diff --git a/may21/factorial.php b/may21/factorial.php
new file mode 100644
index 0000000..4b090c3
--- /dev/null
+++ b/may21/factorial.php
@@ -0,0 +1,10 @@
+<?php
+$num = 6;
+$fact=1;
+$n1 = $num;
+while($num>0){
+  $fact *= $num;
+  $num--;
+}
+echo "Factorial of $n1 is $fact";
+?>
\ No newline at end of file
diff --git a/may21/leapYear.php b/may21/leapYear.php
new file mode 100644
index 0000000..45e15c8
--- /dev/null
+++ b/may21/leapYear.php
@@ -0,0 +1,25 @@
+ <!DOCTYPE html>
+<html>
+<head>
+	<title>leap year</title>
+</head>
+<body>
+<form method="post">
+	<input type="text" name="year" placeholder="Enter year">
+	<input type="submit" name="submit" value="Submit">
+</form>
+<?php
+ if(isset($_POST['submit'])){
+ 	$year = $_POST['year'];
+ 	if(!is_numeric($year)){
+ 		echo "Enter a valid year";
+ 		return;
+ 	}
+ 	if(($year%4 == 0) and ($year%100 != 0) or ($year%400 == 0))
+ 		echo "$year is leap year";
+ 	else
+ 		echo "$year is not a leap year";
+ }
+?>
+</body>
+</html>
\ No newline at end of file
diff --git a/may21/minMax.php b/may21/minMax.php
new file mode 100644
index 0000000..0c5c409
--- /dev/null
+++ b/may21/minMax.php
@@ -0,0 +1,20 @@
+<?php
+ $numarr = array(20, 9, 10, 7, 67, 145, 89, 5, 765, 8);
+ function min1($arr){
+ 	$min = $arr[0];
+ 	for($i=1; $i<sizeof($arr); $i++)
+ 		if($min > $arr[$i])
+ 			$min = $arr[$i];
+ 	return $min;
+ }
+ function max1($arr){
+ 	$max = $arr[0];
+ 	for($i=1; $i<sizeof($arr); $i++)
+ 		if($max < $arr[$i])
+ 			$max = $arr[$i];
+    return $max;
+ }
+
+ echo "Smallest number is ". min1($numarr) . "<br>";
+ echo "Largest number is ". max1($numarr) . "<br>";
+?>
\ No newline at end of file
diff --git a/may21/pattern1.php b/may21/pattern1.php
new file mode 100644
index 0000000..4a6ad57
--- /dev/null
+++ b/may21/pattern1.php
@@ -0,0 +1,7 @@
+<?php
+ for($i=5; $i>0; $i--){
+ 	for($j=$i; $j>0; $j--)
+ 		echo "* ";
+ 	echo "<br>";
+ }
+?>
\ No newline at end of file
diff --git a/may21/patternAlpha.php b/may21/patternAlpha.php
new file mode 100644
index 0000000..cc97260
--- /dev/null
+++ b/may21/patternAlpha.php
@@ -0,0 +1,9 @@
+    <?php  
+    $alpha = range('A', 'Z');  
+    for($i=0; $i<5; $i++){   
+      for($j=0; $j<=$i; $j++){  
+        echo $alpha[$j];  
+        }  
+        echo "<br>";  
+    }  
+    ?>  
\ No newline at end of file
diff --git a/may21/searchNum.php b/may21/searchNum.php
new file mode 100644
index 0000000..4fe087b
--- /dev/null
+++ b/may21/searchNum.php
@@ -0,0 +1,18 @@
+<?php
+function search($n, $arr){
+	$flag = 0;
+	$arrSize = sizeof($arr);
+	for($i=0; $i<=$arrSize; $i++)
+		if($n == $arr[$i]){
+			$flag = 1;
+			break;
+		}
+	if($flag == 1)
+		echo "$n found at position ". ++$i;
+	else
+		echo "$n is not found in the list";
+}
+
+$arr = array(23, 9, 15, 67, 89, 3, 10, 5);
+search(10, $arr);
+?>
\ No newline at end of file
diff --git a/may21/switchDemo.php b/may21/switchDemo.php
new file mode 100644
index 0000000..3f973e4
--- /dev/null
+++ b/may21/switchDemo.php
@@ -0,0 +1,21 @@
+<?php
+$month = 4;
+echo "$month month is ";
+switch ($month) {
+	case '1': echo "Jan";
+		# code...
+		break;
+	case '2': echo "Feb";
+		# code...
+		break;
+	case '3': echo "March";
+			# code...
+		break;
+	case '4': echo "April";
+		# code...
+		break;
+	default: echo "Month is not mentioned";
+		# code...
+		break;
+}
+?>
\ No newline at end of file
diff --git a/may21/userInput.php b/may21/userInput.php
new file mode 100644
index 0000000..7c6b8f1
--- /dev/null
+++ b/may21/userInput.php
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>User Name</title>
+</head>
+<body>
+  <form method="post">
+  	<input type="text" name="uname" placeholder="Enter your name">
+  	<input type="submit" name="submit" value="Submit">
+  </form>
+  <?php
+    $name = $_POST['uname'];
+    echo "Hi, $name welcome to this page..!";
+  ?>
+</body>
+</html>
\ No newline at end of file
diff --git a/may22/arrayDemo.php b/may22/arrayDemo.php
new file mode 100644
index 0000000..1ec1477
--- /dev/null
+++ b/may22/arrayDemo.php
@@ -0,0 +1,26 @@
+<?php
+ $x = array("1"=>"ABC", "2"=>"EFG", "3"=>"CDE", "4"=>"GHI", "5"=>"IJK");
+ asort($x);
+ echo "Array listed on ascending order of values <br>";
+ foreach ($x as $arr_key => $arr_value) {
+ 	echo "Key: ".$arr_key." and value: ".$arr_value."<br>";
+ }
+ $x = array("1"=>"ABC", "2"=>"EFG", "3"=>"CDE", "4"=>"GHI", "5"=>"IJK");
+ksort($x);
+echo "<br>Array listed on ascending order of keys <br>";
+foreach ($x as $arr_key => $arr_value) {
+ 	echo "Key: ".$arr_key." and value: ".$arr_value."<br>";
+ }
+ $x = array("1"=>"ABC", "2"=>"EFG", "3"=>"CDE", "4"=>"GHI", "5"=>"IJK");
+ arsort($x);
+ echo "<br>Array listed on descending order of values <br>";
+ foreach ($x as $arr_key => $arr_value) {
+ 	echo "Key: ".$arr_key." and value: ".$arr_value."<br>";
+ }
+ $x = array("1"=>"ABC", "2"=>"EFG", "3"=>"CDE", "4"=>"GHI", "5"=>"IJK");
+ krsort($x);
+echo "<br>Array listed on descending order of keys <br>";
+foreach ($x as $arr_key => $arr_value) {
+ 	echo "Key: ".$arr_key." and value: ".$arr_value."<br>";
+ }
+?>
\ No newline at end of file
diff --git a/may22/disList.php b/may22/disList.php
new file mode 100644
index 0000000..094c741
--- /dev/null
+++ b/may22/disList.php
@@ -0,0 +1,10 @@
+<?php
+ $colors = array('Green', 'Red', 'Blue', 'White', 'Black');
+ sort($colors);
+ echo "Given color list is <br> <ol>";
+ foreach ($colors as $color) {
+ 	echo "<li>$color</li>";
+ }
+ echo "</ol>";
+
+?>
\ No newline at end of file
diff --git a/may22/disTable.php b/may22/disTable.php
new file mode 100644
index 0000000..9b4e649
--- /dev/null
+++ b/may22/disTable.php
@@ -0,0 +1,8 @@
+<?php
+echo "<table border=1px> 
+       <tr><th>items</th><th>Price</th></tr>
+       <tr><td>ABC</td><td>150</td></tr>
+       <tr><td>DEF</td><td>700</td></tr>
+       <tr><td>XYZ</td><td>450</td></tr>
+       </table>"
+?>
\ No newline at end of file
diff --git a/may22/emailValidation.php b/may22/emailValidation.php
new file mode 100644
index 0000000..6bae53c
--- /dev/null
+++ b/may22/emailValidation.php
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>email validation</title>
+</head>
+<body>
+<form method="post">
+	<input type="text" name="email" placeholder="Enter Email ID">
+	<input type="submit" name="submit" value="Check">
+</form>
+<?php
+if(isset($_POST['submit'])){
+	$email = $_POST['email'];
+    if(filter_var($email, FILTER_VALIDATE_EMAIL))
+ 	    echo "$email is valid";
+ 	else
+ 		echo "<span style='color:red;'>$email</span> is not valid";
+}
+?>
+</body>
+</html>
\ No newline at end of file
diff --git a/may22/exeDelay.php b/may22/exeDelay.php
new file mode 100644
index 0000000..80f817b
--- /dev/null
+++ b/may22/exeDelay.php
@@ -0,0 +1,5 @@
+<?php
+echo date('h:i:s')."<br>";
+sleep(20);
+echo date('h:i:s');
+?>
\ No newline at end of file
diff --git a/may22/fileMod.php b/may22/fileMod.php
new file mode 100644
index 0000000..4a91120
--- /dev/null
+++ b/may22/fileMod.php
@@ -0,0 +1,7 @@
+<?php
+ $file_name = basename($_SERVER['PHP_SELF']);
+ $last_mod = filemtime($file_name);
+ echo "Last modified on ". date("l, dS, F, Y, h:ia", $last_mod);
+ $lines = count(file($file_name));
+ echo "<br>$file_name contains $lines lines of code"
+?>
\ No newline at end of file
diff --git a/may22/findVer.php b/may22/findVer.php
new file mode 100644
index 0000000..c225d8e
--- /dev/null
+++ b/may22/findVer.php
@@ -0,0 +1,3 @@
+<?php
+ phpinfo();
+?>
\ No newline at end of file
diff --git a/may22/info.php b/may22/info.php
new file mode 100644
index 0000000..7e0385b
--- /dev/null
+++ b/may22/info.php
@@ -0,0 +1,32 @@
+<?php
+$ip_add = 0;
+ if(!empty($_SERVER['HTTP_CLIENT_IP'])){
+ 	$ip_add = $_SERVER['HTTP_CLIENT_IP'];
+ }
+ elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
+ 	$ip_add = $_SERVER['HTTP_X_FORWARDED_FOR'];
+ }
+ else 
+ 	$ip_add = $_SERVER['REMOTE_ADDR'];
+ echo "IP Address is : $ip_add";
+
+ // Browser info
+ echo "<br><br>Your User agent is : ". $_SERVER[HTTP_USER_AGENT];
+
+ //file name
+ $filename = basename($_SERVER['PHP_SELF']);
+echo "<br><br>Current file name is " . $filename ;
+
+//http or https.?
+if(!empty(_SERVER['HTTPS']))
+	echo "<br><br> https is enabled";
+else
+	echo "<br><br> http is enabled";
+
+//URL 
+$url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
+echo "<br><br> URL: $url";
+
+//Current user
+echo "<br><br>Current User is " .get_current_user();
+?>
\ No newline at end of file
diff --git a/may22/patternReplace.php b/may22/patternReplace.php
new file mode 100644
index 0000000..99b6bb6
--- /dev/null
+++ b/may22/patternReplace.php
@@ -0,0 +1,6 @@
+<?php
+//Changing the color of 1st letter of a word
+ $name = "Chethan H";
+ $name = preg_replace('/(\b[a-z])/i', '<span style="color:red;">\1</span>', $name);
+ echo $name;
+?>	
\ No newline at end of file
diff --git a/may22/redirecting.php b/may22/redirecting.php
new file mode 100644
index 0000000..a53f776
--- /dev/null
+++ b/may22/redirecting.php
@@ -0,0 +1,3 @@
+<?php
+header('Location: https://google.com/');
+?>
\ No newline at end of file
diff --git a/may22/swap2num.php b/may22/swap2num.php
new file mode 100644
index 0000000..452cd2a
--- /dev/null
+++ b/may22/swap2num.php
@@ -0,0 +1,12 @@
+<?php
+$a = 120;
+$b = 500;
+function swap($x, $y){
+	$x=$x+$y;
+	$y=$x-$y;
+	$x=$x-$y;
+	echo "After swap 1st num is $x and 2nd num is $y";
+}
+echo "Before swap 1st num is $a and 2nd num is $b <br>";
+swap($a, $b);
+?>
\ No newline at end of file
diff --git a/may23/armStrong.php b/may23/armStrong.php
new file mode 100644
index 0000000..1c42f60
--- /dev/null
+++ b/may23/armStrong.php
@@ -0,0 +1,13 @@
+<?php
+ function arm($num){
+    if($num == 0)
+    	return 0;
+    return (($num % 10) * ($num % 10) * ($num % 10)) + arm($num / 10);
+ }
+$num = 370;
+$res = arm($num);
+if($num == $res)
+	echo "$num is armstrong number";
+else
+	echo "$num is not armstrong number";
+?>
\ No newline at end of file
diff --git a/may23/checkChar.php b/may23/checkChar.php
new file mode 100644
index 0000000..df93d82
--- /dev/null
+++ b/may23/checkChar.php
@@ -0,0 +1,15 @@
+<?php
+  function checkLower($str){
+  	$n = strlen($str);
+  	for($i = 0; $i < $n; $i++){
+  		if(ord($str[$i]) >= ord("A") && ord($str[$i]) <= ord("Z"))
+  			return "$str may contains upper case also";
+  		else
+  			return "$str contains only lower case";
+  	}
+  }
+
+  echo checkLower("mysuru") . "<br>";
+  echo checkLower("Mangalore"). "<br>";
+  echo checkLower("mumbai");
+?>
diff --git a/may23/countDigits.php b/may23/countDigits.php
new file mode 100644
index 0000000..69d5c53
--- /dev/null
+++ b/may23/countDigits.php
@@ -0,0 +1,11 @@
+<?php
+function countOfdigits($num1){
+  if($num1 == 0)
+      return 0;
+  else
+      return (1 + countOfdigits($num1 / 10));
+}
+$num = 1;
+$res = countOfdigits($num);
+echo $num. " contains ".$res. " digits"
+?>
\ No newline at end of file
diff --git a/may23/fact.php b/may23/fact.php
new file mode 100644
index 0000000..30c896f
--- /dev/null
+++ b/may23/fact.php
@@ -0,0 +1,11 @@
+<?php
+function fact($n){
+   if($n==1)
+       return 1;
+   return $n * fact($n-1);
+}
+
+$n = 5;
+echo "Factorial of $n is ".fact($n);
+
+?>
diff --git a/may23/powerOf.php b/may23/powerOf.php
new file mode 100644
index 0000000..c633c28
--- /dev/null
+++ b/may23/powerOf.php
@@ -0,0 +1,11 @@
+<?php
+function power($base, $power){
+	if($power == 0) 
+		return 1;
+	return $base * power($base, $power-1);
+}
+$num1 = 10;
+$num2 = 3;
+$result = power($num1, $num2);
+echo "$num1 to the power of $num2 is $result";
+?>
\ No newline at end of file
diff --git a/may23/prime.php b/may23/prime.php
new file mode 100644
index 0000000..d190caa
--- /dev/null
+++ b/may23/prime.php
@@ -0,0 +1,17 @@
+<?php
+function isPrime($n, $i = 2)
+{
+    if ($i == $n / 2 + 1)
+        return true;
+    if ($n % $i == 0)
+        return false;
+    return isPrime($n, $i + 1);
+}
+
+$n = 7;
+    if (!isPrime($n))
+        echo "Prime number";
+    else
+        echo "Not prime";
+
+?>
diff --git a/may23/primeCopy.php b/may23/primeCopy.php
new file mode 100644
index 0000000..c531a12
--- /dev/null
+++ b/may23/primeCopy.php
@@ -0,0 +1,19 @@
+<?php
+function isPrime($n, $i = 2)
+{
+    if ($n <= 2)
+        return ($n == 2) ? true : false;
+    if ($n % $i == 0)
+        return false;
+    if ($i * $i > $n)
+        return true;
+    return isPrime($n, $i + 1);
+}
+
+$n = 17;
+    if (isPrime($n))
+        echo "$n is prime number";
+    else
+        echo "$n is not prime";
+
+?>
diff --git a/may23/randomNum.php b/may23/randomNum.php
new file mode 100644
index 0000000..5274f47
--- /dev/null
+++ b/may23/randomNum.php
@@ -0,0 +1,8 @@
+<?php
+ $n = range(10, 30);
+ shuffle($n);
+ echo "Random Numbers between 10 and 30 are <br>";
+ foreach ($n as $val) {
+ 	echo $val. " ";
+ }
+?>
\ No newline at end of file
diff --git a/may23/reverseStr.php b/may23/reverseStr.php
new file mode 100644
index 0000000..6a27aa3
--- /dev/null
+++ b/may23/reverseStr.php
@@ -0,0 +1,14 @@
+<?php
+function rev($str){
+  $n = strlen($str);
+  if($n == 1)
+  	 return $str;
+  else{
+  	$n--;
+    return rev(substr($str, 1, $n)) . substr($str, 0, 1) ;
+  }
+}
+
+$str = "Bengaluru";
+echo rev($str);
+?>
\ No newline at end of file
diff --git a/may23/sumOf.php b/may23/sumOf.php
new file mode 100644
index 0000000..e92b0da
--- /dev/null
+++ b/may23/sumOf.php
@@ -0,0 +1,11 @@
+<?php
+function sumOf($num){
+    if($num == 0)
+        return 0;
+    else
+        return (($num % 10) + sumOf($num / 10));
+}
+$n = 12345;
+$res = sumOf($n);
+echo "Sum of digits of $n is ".$res;
+?>
diff --git a/may24/dateFun.php b/may24/dateFun.php
new file mode 100644
index 0000000..4538f3f
--- /dev/null
+++ b/may24/dateFun.php
@@ -0,0 +1,7 @@
+<?php
+ echo "This is ";
+ echo date(L)?'Leap year':'Not a leap year';
+ echo "<br>Today is ";
+ echo date('d-m-Y');
+ echo "<br>Time is ".date('h:i:s a');
+?>
\ No newline at end of file
diff --git a/may24/dict.php b/may24/dict.php
new file mode 100644
index 0000000..56e2f2d
--- /dev/null
+++ b/may24/dict.php
@@ -0,0 +1,4 @@
+<?php
+ $words = readfile("dict.txt");
+ echo $words;
+?>
\ No newline at end of file
diff --git a/may24/dict.txt b/may24/dict.txt
new file mode 100644
index 0000000..17ff328
--- /dev/null
+++ b/may24/dict.txt
@@ -0,0 +1,6 @@
+AAS = Alive and smiling
+ADN = Any day now
+AEAP = As early as possible
+AFAIK = As far as I know
+AFK = Away from keyboard
+AKA = Also known as
\ No newline at end of file
diff --git a/may24/fileInfo.php b/may24/fileInfo.php
new file mode 100644
index 0000000..765d65a
--- /dev/null
+++ b/may24/fileInfo.php
@@ -0,0 +1,5 @@
+<?php
+ echo "File located at ".realpath("fileInfo.php");
+ echo "<br>Directory Name: ".dirname("/may24/fileInfo.php");
+ echo "<br>File name is  ".basename("fileInfo.php");
+?>
\ No newline at end of file
diff --git a/may24/filewrite.txt b/may24/filewrite.txt
new file mode 100755
index 0000000..e69de29
diff --git a/may24/links.php b/may24/links.php
new file mode 100644
index 0000000..76bc423
--- /dev/null
+++ b/may24/links.php
@@ -0,0 +1,7 @@
+<?php
+ echo "<table>";
+ echo "<tr><td>Link</td></tr>";
+ include "linksPage.txt";
+ echo "<tr><td>Link1</td></tr>";
+ echo "</table>";
+?>
\ No newline at end of file
diff --git a/may24/linksPage.txt b/may24/linksPage.txt
new file mode 100644
index 0000000..7c36939
--- /dev/null
+++ b/may24/linksPage.txt
@@ -0,0 +1,9 @@
+<TR>
+
+<TD height="30" valign="middle" bgcolor="#FFFFCC">
+
+<a href="links.php">New Section</a>
+
+</TD>
+
+</TR>
\ No newline at end of file
diff --git a/may24/shuffleStr.php b/may24/shuffleStr.php
new file mode 100644
index 0000000..56e2c9f
--- /dev/null
+++ b/may24/shuffleStr.php
@@ -0,0 +1,5 @@
+<?php
+$city = "Benagluru";
+$city = str_shuffle($city);
+echo $city;
+?>
\ No newline at end of file
diff --git a/may24/strOp.php b/may24/strOp.php
new file mode 100644
index 0000000..b92f6e0
--- /dev/null
+++ b/may24/strOp.php
@@ -0,0 +1,10 @@
+<?php
+ $city = "Bengaluru"; 
+ echo "ASCII value of 1st character $city is ".ord($city); // display ASCII value of 1st character
+ $n = 70;
+ echo "<br>$n ASCII character is ". chr($n);
+ $city1 = "Mysuru";
+ echo "<br>$city and $city1 contains ".similar_text($city, $city1, $perc). " simmiliar characters and that's $perc %";
+ $word = "A BC DEF";
+ echo "<br>". str_word_count($word);
+?>
\ No newline at end of file
diff --git a/may24/strPalidrme.php b/may24/strPalidrme.php
new file mode 100644
index 0000000..4c1d1a4
--- /dev/null
+++ b/may24/strPalidrme.php
@@ -0,0 +1,15 @@
+<?php
+function check_palindrome($string) 
+{
+  if ($string == strrev($string))
+      return 1;
+  else
+	  return 0;
+}
+$str = "madam";
+$status = check_palindrome($str);
+if($status)
+  echo "$str is Palindrome";
+else
+	echo "$str is not a palindrome";
+?>
\ No newline at end of file
diff --git a/may24/userDataCheck.php b/may24/userDataCheck.php
new file mode 100644
index 0000000..3e989f0
--- /dev/null
+++ b/may24/userDataCheck.php
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>security</title>
+	<?php
+      if($_POST['submit'])
+	    $str = $_POST['uname'];
+      $str = htmlspecialchars($str);
+      echo "$str";
+?>
+</head>
+<body>
+<form method ='post'> 
+      <input type='text' name='uname' placeholder='Write a string here'><br>
+	      <input type='submit' value='Submit' name='submit'> 
+</form>
+</body>
+</html>
+
+
+
diff --git a/may24/writeToFile.php b/may24/writeToFile.php
new file mode 100644
index 0000000..a24b225
--- /dev/null
+++ b/may24/writeToFile.php
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>File operations</title>
+    <?php
+      if(isset($_POST['submit'])){
+      	$str = $_POST['str'];
+      	$str = htmlspecialchars($str);
+      	$filename = "filewrite.txt";
+      	if(file_exists($filename))
+      		echo "File Exist";
+      	$handle = fopen($filename, "a+")or die("<br> can't open file");
+      	fwrite($handle, $str);
+      	fclose($handle);
+      	echo "Content added to the file";
+
+      }
+    ?>
+</head>
+<body>
+ <form method="post">
+ 	<input type="text" name="str" placeholder="Write content to add in to the file"><br>
+ 	<input type="submit" name="submit" value="Add to fle">
+ </form>
+</body>
+</html>	
\ No newline at end of file
diff --git a/may25/DBconnection.php b/may25/DBconnection.php
new file mode 100644
index 0000000..2925949
--- /dev/null
+++ b/may25/DBconnection.php
@@ -0,0 +1,13 @@
+<?php
+require 'config.php';
+$db_handle = mysqli_connect(DB_SERVER, DB_USER, DB_PASSWORD);
+echo "Server Found <br>";
+$db = "drupaldb";
+//$db_connect = mysqli_select_db($db_handle, $db);
+$db_found = mysqli_select_db( $db_handle, $db );
+if($db_found)
+	echo "Data base found";
+else
+	echo "Data base not found";
+mysqli_close($db_handle);
+?>
\ No newline at end of file
diff --git a/may25/InsertDb.php b/may25/InsertDb.php
new file mode 100644
index 0000000..07fe121
--- /dev/null
+++ b/may25/InsertDb.php
@@ -0,0 +1,21 @@
+<?php
+require 'config.php';
+//  if(isset(_POST['submit'])){
+    /*$fname = $_POST['firstname'];
+    $sname = $_POST['secondname'];
+    $email = $_POST['email'];
+    $phone = $_POST['contact'];
+    $password = $_POST['pword']; */
+    $db_handle = mysqli_connect(DB_SERVER, DB_USER, DB_PASSWORD);
+    $db = "drupaldb";
+    $db_connect = mysqli_select_db($db_handle, $db);
+    if($db_connect){
+      $sql = "INSERT INTO registration_data(first_name, second_name, email, contact_num, password) VALUES ('Chethan', 'H', 'chethan@gmail.com', '98', 'c')";
+      $result = mysqli_query($db_handle, $sql);
+      mysqli_close($db_handle);
+      echo "You are successfully registered";
+ //   }
+  }
+  else
+    echo "DB not found";
+?>
\ No newline at end of file
diff --git a/may25/classDemo.php b/may25/classDemo.php
new file mode 100644
index 0000000..b04d16d
--- /dev/null
+++ b/may25/classDemo.php
@@ -0,0 +1,20 @@
+<?php
+ /**
+  * 
+  */
+ class Demo
+ {
+ 	
+ 	function __construct()
+ 	{
+ 		# code...
+ 		echo "Inside constructor";
+ 	}
+ 	function a(){
+ 		echo "Inside function";
+ 	}
+ }
+ $class_demo = new Demo;
+ echo "<br>";
+ $class_demo -> a();
+?>
\ No newline at end of file
diff --git a/may25/config.php b/may25/config.php
new file mode 100644
index 0000000..7ebc522
--- /dev/null
+++ b/may25/config.php
@@ -0,0 +1,5 @@
+<?php
+ define(DB_SERVER, 'localhost');
+ define(DB_USER, 'drupal');
+ define(DB_PASSWORD, 'password')
+?>
\ No newline at end of file
diff --git a/may25/readDb.php b/may25/readDb.php
new file mode 100644
index 0000000..3d3f9dd
--- /dev/null
+++ b/may25/readDb.php
@@ -0,0 +1,24 @@
+<?php
+ require 'config.php';
+ $db_handle = mysqli_connect(DB_SERVER, DB_USER, DB_PASSWORD);
+ 	$db = "drupaldb";
+ 	$db_found = mysqli_select_db($db_handle, $db);
+    if($db_found){
+        $sql = "SELECT * FROM registration_data";
+        $q_res = mysqli_query($db_handle, $sql);
+        echo "EID ENAME MID <br>";
+        while ($field = mysqli_fetch_assoc($q_res)) {
+        	echo $field['first_name'] ." ";
+        	echo $field['second_name']." ";
+        	echo $field['email']." ";
+        	echo $field['contact_num']." ";
+        	echo $field['password']" ";
+        	echo "<br>";
+        }
+    }
+    else
+    	echo "Database doesnot exists";
+ mysqli_close($db_handle);
+ ?>
+
+
diff --git a/may25/registration.php b/may25/registration.php
new file mode 100644
index 0000000..fb5849f
--- /dev/null
+++ b/may25/registration.php
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>HTML table</title>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
+  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
+  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+  <script type="text/javascript" src="./reg.js"></script>
+
+<?php
+require 'config.php';
+  if(isset(_POST['submit'])){
+    $fname = $_POST['firstname'];
+    $sname = $_POST['secondname'];
+    $email = $_POST['email'];
+    $phone = $_POST['contact'];
+    $password = $_POST['pword'];
+    $db_handle = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD);
+    $db_connect = mysql_select_db($db_handle, "drupaldb");
+    if($db_connect){
+      $sql = "INSERT INTO registration_data('first_name', 'second_name', 'email', 'contact_num', 'password') VALUES ($fname, $sname, $email, $phone, $password)";
+      $result = mysql_query($sql);
+      mysql_close($db_handle);
+      echo "You are successfully registered";
+    }
+  }
+?>
+
+
+
+</head>
+<body bgcolor="rgba(0,0,0,.54)">
+ <div class="container-fluid">
+ 	<div class="row">
+ 		<div class="col-md-12" style="margin: 20px;"></div>
+ 	</div>
+ 	<div class="row">
+ 	<div class="col-md-4"></div>
+ 	<div class="col-md-4 well">
+ 		<h2>Registration</h2>
+ 		<!--<img src="/home/rajeshwari/Downloads/Chethan/HTML/reg.png" alt="human icon" align="middle" width="100px" height="100px" style=""><br/> -->
+ 		<form  method="post" onsubmit="reg()" name="regform">
+ 			<input type="text" name="firstname" placeholder="First Name" id="fname" required><span id="errfname" style="color: red;"></span><br><br>
+            <input type="text" name="secondname" placeholder="Second Name"><span id="errsname" style="color: red;"></span><br><br>
+            <input type="email" name="email" placeholder="E-mail" required><span id="erremail" style="color: red;"></span><br><br>
+            <input type="tel" name="contact" placeholder="Contact Number" min="10" max="12" required><span id="errconnum" style="color: red;"></span><br><br>
+            <input type="password" name="pword" placeholder="Password" id="pword" required><br><br>
+            <input type="password" name="conpword" placeholder="Confirm Password" id="conpword" required><span id="errpword" style="color: red;"></span><br><br>
+            <table class="table" style="width:150px;">
+              <tr>
+                <td class="success"><input type="submit" name="submit" value="Register" style="background-color: green; color: #fff;"> </td>
+    			<td class="danger"><input type="reset" name="reset" value="Cancel" style="background-color: red; color: #fff;"> </td>
+   			  </tr>
+            </table>
+ 		</form>
+ 	</div>	
+ 	<div class="col-md-4"></div>
+  </div>
+ </div>
+ <script type="text/javascript">
+ 	function reg(){
+	/* var nameRegex = /^[a-zA-Z\-]+$/;
+  	var name;
+  	name = document.getElementById('fname').value;
+  	alert("0");
+  	if(name.match(nameRegex) == null){
+  		var err = document.getElementById('errfname');
+  		err.innerHTML = "Name should contains only alphabets.";
+  		alert("1");
+  		return false;
+  	} */
+  	var pword1 = document.getElementById('pword');
+  	var conpword = document.getElementById('conpword');
+  	if(pword.value != conpword.value){
+  		// document.getElementById('errpword').innerHTML = "Does word doesn't match";
+  		alert("Password doestnot match");
+  		document.regform.pword.focus();
+  		return false;
+  	} 
+}
+ </script>
+</body>
+</html>
\ No newline at end of file