how to replace global variable with local

ZeroOne

hi,

please how i can replace global variable with local variable ?

devinemke

what do you mean? local to what?

ZeroOne

I mean give value of local variable to global variable

devinemke

when you say local, what do you mean? local to what variable scope? a function? if so then either return the variable from the function or simply place it directly into the $GLOBALS array.

ZeroOne

example for what i want :

<?php
$var = "null";
switch($i){
default:
echo"<form method=\"POST\" action=\"?i=next\">
Your Name :: <input type=\"text\" name=\"name\" value=\"\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "next":
$name = $_POST['name'];
$var = $name ; //here i want to give the value of the $name(local) to the $var(Global)
echo"<form method=\"POST\" action=\"?i=last\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "last":
echo "$var"; //here i want echo the last value of the $var($name value) not "null" (the first one)
break;
}
?>

I know that example not do any thing useful but i want explain my idea 🙂 .

Weedpacket

Put the $name=$_POST['name'] and $var=$name lines in after case "last":. If $i is "last", then the code under 'case "next":' is never executed, so $var won't be equal to $name.

This has nothing to do with local or global variables, and everything to do with flow control.

ZeroOne

sorry .. what you mean ?

leatherback

like this:

<?php

$name = $_POST['name'];
$var = $name ; 

switch($i){
default:
echo"<form method=\"POST\" action=\"?i=next\">
Your Name :: <input type=\"text\" name=\"name\" value=\"\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "next":
echo"<form method=\"POST\" action=\"?i=last\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "last":
echo "$var"; //here i want echo the last value of the $var($name value) not "null" (the first one)
break;
}
?>

ZeroOne

Thank you leatherback, but the code above doesn't give anything ?!

leatherback

Well,

-> You do not set $i, as far as I can tell

What exactly do you mean with 'Nothing'? Not what you are hoping for? Or is it an empty screen? Or do you get errors?

ZeroOne

yes it is an empty screen

leatherback

Strange. When I open it, I see a form with submit button.

Perhaps your browser is somewhat picky with the absence of <html><body> tags? What is in the source of the page when you load it? (It shouold show:

<form method="POST" action="?i=next">
Your Name :: <input type="text" name="name" value="">
<input type="submit" value="submit">
</form>

ZeroOne

yes i also see that ,but i mean when i click on submit button first and second one it give me white screen without any result

leatherback

Well,

-> You do not post to any page, just to ?i=next
-> You do not retrieve $i anywhere.

Asuming you want to have the page submit to itself, and is called index.php, you need to do something like: (Only the default is set. I do not understand the logic of what you want to do for the rest:


<?php

$i = $_POST[i];
$name = $_POST['name'];
$var = $name ; 

switch($i){
default:
echo"
<form method=\"POST\" action=\"index.php\">
<input type=\"hidden\" name=\"i\" value=\"next\">
Your Name : <input type=\"text\" name=\"name\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "next":
echo"<form method=\"POST\" action=\"?i=last\">
<input type=\"submit\" value=\"submit\">
</form>";
break;

case "last":
echo "$var"; //here i want echo the last value of the $var($name value) not "null" (the first one)
break;
}
?>