Phpweb Programming Examples

do while loop statement

phpweb

<html>
   <body>
   
      <?php
         $i = 0;
         $num = 0;
         
         do {
            $i++;
         }
         
         while( $i < 10 );
         echo ("Loop stopped at i = $i" );
      ?>
      
   </body>
</html>

php do while loop statement

phpweb

<html>
   <body>
   
      <?php
         $i = 0;
         $num = 0;
         
         do {
            $i++;
         }
         
         while( $i < 10 );
         echo ("Loop stopped at i = $i" );
      ?>
      
   </body>
</html>

php while loop statement

phpweb

<html>
   <body>
   
      <?php
         $i = 0;
         $num = 50;
         
         while( $i < 10) {
            $num--;
            $i++;
         }
         
         echo ("Loop stopped at i = $i and num = $num" );
      ?>
      
   </body>
</html>

for loop statement in php

phpweb

<html>
   <body>
      
      <?php
         $a = 0;
         $b = 0;
         
         for( $i = 0; $i<5; $i++ ) {
            $a += 10;
            $b += 5;
         }
         
         echo ("At the end of the loop a = $a and b = $b" );
      ?>
   
   </body>
</html>

Switch Statement in PHP

phpweb

<html>
   <body>
      
      <?php
         $d = date("D");
         
         switch ($d){
            case "Mon":
               echo "Today is Monday";
               break;
            
            case "Tue":
               echo "Today is Tuesday";
               break;
            
            case "Wed":
               echo "Today is Wednesday";
               break;
            
            case "Thu":
               echo "Today is Thursday";
               break;
            
            case "Fri":
               echo "Today is Friday";
               break;
            
            case "Sat":
               echo "Today is Saturday";
               break;
            
            case "Sun":
               echo "Today is Sunday";
               break;
            
            default:
               echo "Wonder which day is this ?";
         }
      ?>
      
   </body>
</html>

ElseIf Statement

phpweb

<html>
   <body>
   
      <?php
         $d = date("D");
         
         if ($d == "Fri")
            echo "Have a nice weekend!";
         
         elseif ($d == "Sun")
            echo "Have a nice Sunday!"; 
         
         else
            echo "Have a nice day!"; 
      ?>
      
   </body>
</html>

PHP Conditional Operator

phpweb

<html>
   
   <head>
      <title>Arithmetical Operators</title>
   </head>
   
   <body>
   
      <?php
         $a = 10;
         $b = 20;
         
         /* If condition is true then assign a to result otheriwse b */
         $result = ($a > $b ) ? $a :$b;
         
         echo "TEST1 : Value of result is $result<br/>";
         
         /* If condition is true then assign a to result otheriwse b */
         $result = ($a < $b ) ? $a :$b;
         
         echo "TEST2 : Value of result is $result<br/>";
      ?>
   
   </body>
</html>

PHP Assignment Operators Example

phpweb

<html>
   
   <head>
      <title>Assignment Operators</title>
   </head>
   
   <body>
      
      <?php
         $a = 42;
         $b = 20;
         
         $c = $a + $b;   /* Assignment operator */
         echo "Addtion Operation Result: $c <br/>";
         
         $c += $a;  /* c value was 42 + 20 = 62 */
         echo "Add AND Assigment Operation Result: $c <br/>";
         
         $c -= $a; /* c value was 42 + 20 + 42 = 104 */
         echo "Subtract AND Assignment Operation Result: $c <br/>";
         
         $c *= $a; /* c value was 104 - 42 = 62 */
         echo "Multiply AND Assignment Operation Result: $c <br/>";
         
         $c /= $a;  /* c value was 62 * 42 = 2604 */
         echo "Division AND Assignment Operation Result: $c <br/>";
         
         $c %= $a; /* c value was 2604/42 = 62*/
         echo "Modulus AND Assignment Operation Result: $c <br/>";
      ?>
      
   </body>
</html>

PHP Logical Operators Example

phpweb

<html>
   
   <head>
      <title>Logical Operators</title>
   </head>
   
   <body>
      
      <?php
         $a = 42;
         $b = 0;
         
         if( $a && $b ) {
            echo "TEST1 : Both a and b are true<br/>";
         }else{
            echo "TEST1 : Either a or b is false<br/>";
         }
         
         if( $a and $b ) {
            echo "TEST2 : Both a and b are true<br/>";
         }else{
            echo "TEST2 : Either a or b is false<br/>";
         }
         
         if( $a || $b ) {
            echo "TEST3 : Either a or b is true<br/>";
         }else{
            echo "TEST3 : Both a and b are false<br/>";
         }
         
         if( $a or $b ) {
            echo "TEST4 : Either a or b is true<br/>";
         }else {
            echo "TEST4 : Both a and b are false<br/>";
         }
         
         $a = 10;
         $b = 20;
         
         if( $a ) {
            echo "TEST5 : a is true <br/>";
         }else {
            echo "TEST5 : a  is false<br/>";
         }
         
         if( $b ) {
            echo "TEST6 : b is true <br/>";
         }else {
            echo "TEST6 : b  is false<br/>";
         }
         
         if( !$a ) {
            echo "TEST7 : a is true <br/>";
         }else {
            echo "TEST7 : a  is false<br/>";
         }
         
         if( !$b ) {
            echo "TEST8 : b is true <br/>";
         }else {
            echo "TEST8 : b  is false<br/>";
         }
      ?>
      
   </body>
</html>

PHP Comparison Operators Example

phpweb

<html>
   
   <head>
      <title>Comparison Operators</title>
   </head>
   
   <body>
      
      <?php
         $a = 42;
         $b = 20;
      
         if( $a == $b ) {
            echo "TEST1 : a is equal to b<br/>";
         }else {
            echo "TEST1 : a is not equal to b<br/>";
         }
      
         if( $a > $b ) {
            echo "TEST2 : a is greater than  b<br/>";
         }else {
            echo "TEST2 : a is not greater than b<br/>";
         }
      
         if( $a < $b ) {
            echo "TEST3 : a is less than  b<br/>";
         }else {
            echo "TEST3 : a is not less than b<br/>";
         }
      
         if( $a != $b ) {
            echo "TEST4 : a is not equal to b<br/>";
         }else {
            echo "TEST4 : a is equal to b<br/>";
         }
      
         if( $a >= $b ) {
            echo "TEST5 : a is either greater than or equal to b<br/>";
         }else {
            echo "TEST5 : a is neither greater than nor equal to b<br/>";
         }
      
         if( $a <= $b ) {
            echo "TEST6 : a is either less than or equal to b<br/>";
         }else {
            echo "TEST6 : a is neither less than nor equal to b<br/>";
         }
      ?>
      
   </body>
</html>

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