Basic/Misc Codes in Php

Published by Admin on

Example : How to make/use Comment in different ways in Php ?

<!DOCTYPE html>
<html>
	<body>
	  <?php 
	      // echo "The (//) symbol is used to represent single line comment in php applied in the beginning of sentence/word"; 
	  ?>
	</body>
</html>

Output:
 
-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>
	  <?php 
	      # echo "In some versions of Php, the hash(#) symbol is also used to represent single line comment in php"; 
	  ?>
	</body>
</html>

Output:

-----------------  OR ------------------

<!DOCTYPE html>
<html>
	<body>
		<?php
                    /* The symbol(/*...*/) is used to represent multiline comment in php applied in the beginning and end of the sentence */
                ?>
	</body>
</html>

Output:

Example : How to Print/Display messages in Php?

<!DOCTYPE html>
<html>
	<body>
	    <?php echo "The echo statement is used to print the message in php."; ?>          
	</body>
</html>

Output :
The echo statement is used to print the message in php.

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
   <body>	    
      <?php print "The print statement is aslo used to print the message in php"; ?>
   </body>
</html>

Output:
The print statement is also used to print the message in php.

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>
	   <?php 
		echo "<h2> Message Printing in Php</h2>";
		echo "Display Message in Php1";
                print "Display Message in Php2"; 
	   ?>
	</body>
</html>

Output:
Message Printing in Php
Display Message in Php1Display Message in Php2

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>
	   <?php 
		echo "<h2> Message Printing in Php</h2>";
		echo "Display Message in Php1   ";
                print "Display Message in Php2"; 
	   ?>
	</body>
</html>

Output:
Message Printing in Php
Display Message in Php1   Display Message in Php2
 
-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>
	   <?php 
		$msg="Message Printing in Php";
		echo "<h2>". $msg . "</h2>";
		echo "Display Message in Php1";
                print "Display Message in Php2"; 
	   ?>
	</body>
</html>
 
Output:
Message Printing in Php
Display Message in Php1Display Message in Php2 

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>	
	  <?php 
	     echo "Display Message in Php1<br>"; 
	     ECHO "Display Message in Php2"; 
             eCHO "<br>";
	     eChO "Display Message in Php3";
	  ?>
	</body>

</html>
 
Output:
Display Message in Php1
Display Message in Php2
Display Message in Php3

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>	
	  <?php 
	     echo "Display Message in Php 1<br>"; 
	     ECHO "Display Message in Php 2<br>"; 
	     eChO "Display Message in Php 3";
	  ?>
	</body>
</html>

Output:
Display Message in Php 1
Display Message in Php 2
Display Message in Php 3

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>	
	  <?php
		$x=10;
		$y=25;
		$z=$x+$y;	  
	        echo $x,"<br>"; 
	        ECHO $y,"<br>";
	        echo $z;       
	  ?>
	</body>
</html>

Output:
10
25
35

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>	
	  <?php
		$x=10;
		$y=25;
		$z=$x+$y;
	  
		echo "The addition result is = ". $z;
		echo "<br>The addition result of $x and $y is = ". $z;
		echo "<br>The addition result of $x + $y is = ". $z;
	  ?>
	</body>
</html>

Output:
The addition result is = 35
The addition result of 10 and 25 is = 35
The addition result of 10 + 25 is = 35

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
 <body>	
  <?php	
    echo "Title of the Project is \"Online Travel Management System.\"<br>";
    echo 'Title of the Project is \'Online Travel Management System.\'';
  ?>
 </body>
</html> 

Output : 
Title of the Project is "Online Travel Management System."
Title of the Project is 'Online Travel Management System.'

NB: Php is not case sensitive

Example : How to use New Line output/message in Php ?

<!DOCTYPE html>
<html>
	<body>	
	  <?php 
	     echo "Display Message in Php1<br>"; 
	     ECHO "Display Message in Php2"; 
             eCHO "<br>";
	     eChO "Display Message in Php3";
	  ?>
	</body>
</html> 

Output :
Display Message in Php1
Display Message in Php2
Display Message in Php3

-----------------  OR  ----------------

!DOCTYPE html>
<html>
	<body>	
	  <?php
		 echo "Welcome U all <br> In Your Site Codershelpline";
	  ?>
	</body>
</html>
 
Output:
Welcome U all
In Your Site Codershelpline

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
   <body>	
     <?php
        echo nl2br("Php function nl2br() along with \n and \r\n gives the new line on the browser window.");
     ?>
   </body>
</html> 

Output :
Php function nl2br() along with
and
gives the new line on the browser window.

Example : How do we declare different type of variables in Php ?

<!DOCTYPE html>
<html>
	<body>
	
		<?php	
			$msg1 = "Hello India!";  //String datatype.
			$msg1 = 'Hello India!';  //String datatype.

			$msg2 = 410;	//integer datatype.		
			$msg3 = 3.141;   //float datatype.
                        $msg4 = null;    // null datatype.
                        $msg5 = true;    // Boolean datatype.
                        $msg6 = false;
                        $msg7 = array("Hello","India","World");  //array datatype
		?>
	</body>
</html>

Example : How do we Concatenate(. Symbol) String/Variable in Php ?

<!DOCTYPE html>
<html>
	<body>	
		<?php	
			$msg1 = 'Raman';
			$msg2 = "Hi $msg1";
			echo $msg2;
		?>
	</body>
</html>

Output:
Hi Raman
-----------------  OR  ----------------
<!DOCTYPE html>
<html>
	<body>	
		<?php	
			$msg1 = 'Raman';
			$msg2 = "Hi". $msg1;
			echo $msg2;
		?>
	</body>
</html> 

Output:
Hi Raman 
-----------------  OR  ----------------
<!DOCTYPE html>
<html>
	<body>	
		<?php	
			$msg1 = 'Welcome';
			$msg2 = "India";
			echo $msg1." ".$msg2;

			$msg3=$msg1." ".$msg2;
			echo "<br>";
			echo $msg3;
		?>
	</body>
</html> 

Output :
Welcome India
Welcome India
-----------------  OR  ----------------

<!DOCTYPE html>
<html>
   <body>	
      <?php	
	 $val = 15;
	//echo "Output is =: " . $val+35;  Error due to 35 is                                             treated as non-numeric
	echo "Output is = " . ($val+35);	
      ?>
   </body>
</html> 

Output:
Output is = 50

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>	
		<?php			
			$msg1 = 'Welcome';
			$msg1.= " India";
			echo $msg1;			
		?>
	</body>
</html> 

Output:
Welcome India

Example : How to know the Datatype of declared Variable in Php?

<!DOCTYPE html>
<html>
	<body>
	   <?php 			
		$val = 3.141;
		var_dump($val);   // A Php Function to find out Datatype
	   ?>
	</body>
</html>
 
Output :
float(3.141)

-----------------  OR  ----------------

<!DOCTYPE html>
<html>
	<body>
	   <?php
		$val = 3141;
		var_dump(is_int($val));   // Php Function to check integer Datatype

		echo "<br>";
			
		$num = 3.141;
		var_dump(is_int($num));
		?>
	</body>
</html> 

Output :
  bool(true)
  bool(false)

NB: 
var_dump() function returns the data type and value.
is_int(), is_float()- returns int and float value true/false.
is_nan()- returns not a number true/false.
is_numeric() - returns a number is numeric,true/false.

Example : How to Typecast data in Php?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		$val = 3.141;
		$num= (int)$val;    //convert float into int.

		echo $num;
	   ?>
	</body>
</html>

Output :
3

Example : How to display Largest/Maximum value in Php using Php function ?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		echo(max(100,250,3,5,74,-121,532));
	   ?>
	</body>
</html>

Output :
532

Example : How to display Smallest/Minimum value in Php using Php function ?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		echo(min(100,250,3,5,74,-121,532));
	   ?>
	</body>
</html>

Output :
-121

Example : How to display Absolute value in Php using Php function ?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		echo(abs(-251));
	   ?>
	</body>
</html>

Output:
251

Example : How to display Square Root value in Php using Php function ?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		echo(sqrt(25));
	   ?>
	</body>
</html>

Output:
5

Example : How to Rounding Floating Point value in Php using Php function ?

<!DOCTYPE html>
<html>
	<body>
	   <?php
		echo(round(25.954));
		echo "<br>";
		echo(round(25.324));
		?>
	</body>
</html> 

Output :
26
25

Example : How to generate Random Number value in Php using Php function ?

<!DOCTYPE html>
<html>
   <body>
      <?php
	  echo(rand());  // Generates any random number of 7 digit at a time.	
          echo(rand(23, 251)); // Generates any random number bet 23-251 at a time.	
      ?>
   </body>
</html>

Output:
2654257 .....
69 ...

Example : What is the use of Spaceship Operator(<=>) in Php ?

<!DOCTYPE html>
<html>
	<body>	
		<?php			
			echo 100 <=> 100,"<br>"; 
			echo 100 <=> 200,"<br>"; 
			echo 200 <=> 100; 				
		?>
	</body>
</html>

Output :
0
-1
1

Loading

Categories: Php Proj

0 Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Related Posts

Php Proj

Php Home (Project)

Php Proj

Include & Require Statement in Php

Example : How to insert all Php file contents as it is, in another Php file/page at required place ? NB : We can use ‘require’ in place of ‘include’ also. for more details about Read more…

Php Proj

E-mail Sending Code in Php

Example : How to send email in Php using mail() fucnction [with Static data]. Example : How to send email in Php using mail() fucnction [with Dynamic data]. Example : How to send email in Read more…