Control Statements in Hindi

Program में condition के हिसाब से statements को control करने के लिए control statements का इस्तेमाल किया जाता है |

PHP में छह प्रकार के control statements होते है |

1. if Statement
2. if_else Statement
3. else_if Statement
4. switch Case Statement
5. break Statement
6. continue Statement

if Statement

जब condition true होती है तब statement execute होता है |

Syntax for if Statement

if( condtion ){
 //statements;
}

Example for if Statement

Source Code :

12345678<?php
$a = 5;
$b = 6;

if( $a<$b ) {
 echo "a is less than b";
}
?>

Output :

a is less than b

if_else Statement

अगर if की condition true होती है तो if का statement execute होता है | अगर condition false होता है तो else का statement execute होता है |

Syntax for if_else Statement

if( condtion ){
 //statements;
}
else{
 //statements;
}

Example for if_else Statement

Source Code :

1234567891011<?php
$a = 5;
$b = 5;

if( $a<$b ) {
 echo "a is less than b";
}
else{
 echo "a is not less than b";
}
?>

Output :

a is not less than b

else_if Statement

else_if Statement में एक से ज्यादा conditions होते है | if की condition अगर false हो तो else_if की condition check होती है |

Syntax for else_if Statement

if( condtion ){
 //statements;
}elseif( condition ){
 //statements;
}else{
 //statements;
}

Example for else_if Statement

Source Code :

1234567891011121314<?php
$a = 5;
$b = 5;

if( $a<$b ) {
 echo "a is less than b.";
}
elseif( $a>$b ){
 echo "a is greater than b.";
}
else{
 echo "a is equal to b.";
}
?>

Output :

a is equal to b.

switch case Statement

Switch case statement में expression होता है और उससे related कुछ cases होते है | जो case उस expression या declare किये हुए variable से match होती है तब वो output में print होता है | अगर कोई भी case expression से match नहीं होती तो वो default का statement output में print करेगा | आपको हर statement के बाद break लगाना पड़ता है, इसका मतलब वो उसके पहले का statement ही print करेगा | अगर आप break नहीं लगाते तो वो पहला और दूसरा ये दोनों statement को print करेगा | default case के बाद break नहीं लगाते |

Syntax for switch case Statement

switch( switch_expression ){
 
 case 1:
  //statements;
 break;
 case 2:
  //statements;
 break;
 case n:
  //statements;
 break;
 default:
  //statements;
}

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Example for switch case Statement

Source Code :

12345678910111213141516171819202122232425262728<?php
$day = date("l");
switch ( $day ){
    case "Sunday":
        echo "Today is Sunday";
    break;
    case "Monday":
        echo "Today is Monday";
        break;
 case "Tuesday":
        echo "Today is Tuesday";
    break;
 case "Wednesday":
        echo "Today is Wednesday";
    break;
 case "Thursday":
        echo "Today is Thursday";
    break;
 case "Friday":
        echo "Today is Friday";
    break;
 case "Saturday":
        echo "Today is Saturday";
    break;
 default:
        echo "Day is not found";
}
?>

Output :

<script>
var d = new Date();
var day = new Array(7);
day[0] = "Today is Sunday";
day[1] = "Today is Monday";
day[2] = "Today is Tuesday";
day[3] = "Today is Wednesday";
day[4] = "Today is Thursday";
day[5] = "Today is Friday";
day[6] = "Today is Saturday";
document.write(day[d.getDay()]);
</script>

break Statement

break Statement loop को एक विशिष्ट condition पर बंद कर देता है |

Syntax for break Statement

break;

Example for break Statement

Source Code :

1234567891011<?php

for( $i=0; $i<10; $i++){
 echo "Value of i is $i <br />";

 if($i==5){
 break; 
 }
}

?>

Output :

Value of i is 0 
Value of i is 1 
Value of i is 2 
Value of i is 3 
Value of i is 4 
Value of i is 5 

continue Statement

continue Statement का इस्तेमाल loop को repeat करने के लिए किया जाता है | यहाँ पर कुछ statements को skip भी किया जाता है |

Syntax for continue Statement

continue;

Example for continue Statement

Source Code :

123456789101112<?php

   for( $i=0; $i<10; $i++ ){
    
 if($i==5){

    echo "Number $i is skipped <br />";
    continue;
 }
    echo "Value of i is $i <br />";
   }
?>

Output :

Value of i is 0 
Value of i is 1 
Value of i is 2 
Value of i is 3 
Value of i is 4 
Number 5 is skipped 
Value of i is 6 
Value of i is 7 
Value of i is 8 
Value of i is 9