Hey how do you come out of a function in PHP
Doesn't returning a value breaks out from the function as in C and other languages

Is exit;
the option to force the control out of the function

Wont writing exit; stop the execution of the code where the function is called from??

Please clarify my doudt

Thanx

The exit() method is not intended to stop the execution of a particular function but of the entire script itself. While execution of a PHP script starts at the top of the file, execution can be modularized using functions. Functions return values based on their input parameters and logic. Use the keyword return to exit a function. Use the exit() method to terminate execution of the entire script.

I hope this answers your question.

Doesn't returning a value breaks out from the function as in C and other languages

I don't fully understand this question as it is written. Can you re-write it? C and "other languages" also return values from functions and have similar concepts of returning from functions and exiting programs.

Originally Posted by Kyrnt

.
I hope this answers your question. .

Ya this does answer my question and its as i had expected

Originally Posted by Kyrnt

.
I don't fully understand this question as it is written. Can you re-write it? C and "other languages" also return values from functions and have similar concepts of returning from functions and exiting programs.

What I actually meant is

whether a return statement forces the control to get out of the loop

ofcourse a return statement may or may not return a value

I can come out of the function as

return;
or return $value;
or return ($value);


But my code is not behaving as expected may be there is something wrong i'll check that out

Thank you

right buddy???

Originally Posted by rungss

I can come out of the function as

return;
or return $value;
or return ($value);

This is true, but generally you want to write functions that always return the same data type. This is required in more strongly typed languages (e.g., C, Java), but in PHP you have some functionality. But your calling code must then determine what (if anything) was returned, introducing more complexity.

I would submit that if your function normally returns some object or value and you instead want to return from the function prematurely without a value, use -1 or null then check for those values in your calling code.

Originally Posted by rungss

whether a return statement forces the control to get out of the loop

You can use a break statement to do this, and a continue statement to skip one iteration:

PHP Code:

  <?php
  function foo() {
    for($i = 0; $i <10; $i++ ) {
      if($i==3) continue;
      echo $i;
    }
    $j = 0;
    while(true) {
      echo $j++;
      if($j == 42) break;
    }
    return 8;
  }
 
 foo();
 ?>

Originally Posted by 0beron

You can use a break statement to do this, and a continue statement to skip one iteration:
[/php]

Hey you can use the break or continue statement in a for,while or do while loop and also break in switch statements but that wont force the control out of the function.

to come out of the function prematurely you need return statement.