Explain Control structures in PHP

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written 8.3 years ago by

teamques10 ★ 68k

These are

Selection Statements
Loop Statements

1) Selection Statements:

Selection Statements are used to make decisions. These are similar to control structures in C.
The if statement, if…else statement or if… else if statements are used in selection statements.

Switch Case is also used for multiple choices.

<html>
<head>
<title> Selection Demo</title>
</head>
<body>
<?php
Print “<h2> Selection Statement<h2>”;
$a=10;
    	$b=20;
$c=30;
    	if($a>$b)
    		if($a>$c)
    			print “\ltb\gt\ltI\gta is largest number\lt/I\gt\lt/b\gt”;
    		else
    			print “\ltb\gt\ltI\gt c is the largest number\lt/I\gt\lt/b\gt”;
    		else
    		if($b>$c)
    			print “\ltb\gt\ltI\gt b is the largest number \lt/I\gt\lt/b\gt”;
    		else
    			print “\ltb\gt\ltI\gt c is the largest number\lt/I\gt\lt/b\gt”;
        ?\gt
        \lt/body\gt
        \lt/html\gt

**Output:**

Selection Statement

C is the largest number


2) **Loop Statements**

- The loops statements consists of while, do while and for statements. Loops statements are used to perform repetitive tasks.

 While Example:

        \lt?php
        $i=1;
print “The numbers are…”
print “<br/>”;
while($i\lt=5)
        {	
        print $i;
print “<br/>
$i++;
        }
        ?\gt

**Output:**

The numbers are…


1

2

3

4

5

**do ..while Example:**

    \lt?php
    $i=1;

print “The numbers are…”; print “
”; dp { print $i; print “\ltbr/\gt”; $i++; }while($i\lt=5 ); ?\gt **for Example:** \lt?php print “The numbers are..”; print “\ltbr/\gt”; for($i=1;$i\ltn) { print $i; print “
”; $i++; } ?>

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