jump to a different part of script

[tronicsmasta]

hey guys,

 

how can i jump to a different part of the script...

 

instead of using 1 large if else statment, id like to jump to a particular line or section like you would html and the achor/id tags...

 

eg: if ($var == "0") {

// code to jump to line # or anchor

} else {

// continue with code

}

 

thank you!

 

Quinton

[DarkWater]

No, there's no "goto" structure in PHP.  D:  You can just write the code inside the if block...

[tronicsmasta]

that stinks!

 

Thanks!

[trq]

that stinks!

 

Thanks!

 

No, it promotes good design. Take a look at functions if you would like to be able to execute blocks of code on call.

[kenrbnsn]

You can use functions to hold the code:

<?php
function pieceofcode() {
//
// put your code here
//
}

if (somecondition) {
    pieceofcode();
} else {
//
//   other stuff
//
}
?>

 

Ken

[DarkWater]

I was just about to suggest that, Ken.

[tronicsmasta]

Ken,

 

that makes sooo much more sense than the PHP site examples do.

 

Thanks Ken and DarkWater!

[DarkWater]

O_O  I love the PHP site examples for most things. xD

[tronicsmasta]

You can use functions to hold the code:

<?php
function pieceofcode() {
//
// put your code here
//
}

if (somecondition) {
    pieceofcode();
} else {
//
//   other stuff
//
}
?>

 

Ken

 

when calling functions, do you have to put the variables in the ()

 

eg:

 

function ($var1,$var2) {

//code

echo $var1;

echo $var2;

}

 

the reason I ask is because I put all my code into functions by the order they are called making sure that if a functionA() is called that functionA() is above that section of code...

[trq]

when calling functions, do you have to put the variables in the ()

 

Yes, if you need to pass in variables defined outside of your function. Read the link I posted.

[tronicsmasta]

when calling functions, do you have to put the variables in the ()

 

Yes, if you need to pass in variables defined outside of your function. Read the link I posted.

 

i tried reading through those examples but they dont clear cut and dry explain how to call variables from 1 function to another...

 

I am trying to pull varA from functionA into functionB

 

eg:

 

function funcA() {
$varA = 1;
echo "varA is $varA";
}

function funcB() {
$varB = 2;
echo "varB is $varB";
}

function funcC() {
if ($varA == "1") {
	 varA();
     varB();
     } else {
	Echo "I don't know what I am doing!";
}

}

funcC();

 

How and where do I put those variables so I can pass them from 1 function to another

[trq]

Variables declared within a function only exist within said function, to get them out you must use return.

 

<?php

  function a() {
    $varA = 'foo';
    return $varA;
  }

  function b() {
    $varB = 'bar';
    return $varB;
  }

  $x = a();
  $y = b();

  echo $x.$y;

?>

   

[tronicsmasta]

Variables declared within a function only exist within said function, to get them out you must use return.

 

<?php

  function a() {
    $varA = 'foo';
    return $varA;
  }

  function b() {
    $varB = 'bar';
    return $varB;
  }

  $x = a();
  $y = b();

  echo $x.$y;

?>

   

 

ahh... that makes much more sense... now,

when I return $varA, it becomes global if I understand that right, and I should be able to pull it into function b() no?

 

can I call a function with just a() or do i have to set a varible equal to it to call it ($x = a()

 

thanks again!

[trq]

when I return $varA, it becomes global if I understand that right, and I should be able to pull it into function b() no?

 

Not exactly. It will end up in the current scope depending on where you call your function.

 

can I call a function with just a() or do i have to set a varible equal to it to call it ($x = a()

 

No, you do not have to assign a functions return value to a variable. Take a look at this example.

 

<?php

  function foo() {
    return true;
  }

  if (foo()) {
    echo 'foo() returned true';
  } else {
    echo 'foo() returned false';
  }

?>

 

You use built in functions all the time, user defined functions work exactly the same. eg;

 

<?php

  if (isset($_GET['a'])) {
    echo 'isset() returned true';
  } else {
    echo 'isset() returned false';
  }

?>

[ThYGrEaTCoDeR201]

I suggest you use the switch().