Global variable....

[Anon]

I need to stablish a variavel as global so I can call it from anywhere....I've been tried to use either global $var; and $GLOBALS["var"]; but none of these worked for me...the variable loses its value when I go to other page from the page where this global is set...What am I doing wrong?
Thankx in advance

Felipe Lopes

[Anon]

The scope of a variable is the context within which it is defined. For the most part all PHP variables only have a single scope. This single scope spans included and required files as well (from the manual).

If you wish to pass variables from one script to another you must either use GET/POST methods using forms/URLs or use sessions.

[larry1301]

If you are using sessions, you can use the session_register() function to do this.

1.php

<?php
session_start();
session_register($var1);
$var1=1234;
?>

2.php

<?php
session_start();
global $var1;
echo $var1;
?>

To look at your globals you might use this function of mine.

function ShowGlobalVariables ( )
{
global $HTTP_POST_VARS,
$HTTP_GET_VARS,
$HTTP_ENV_VARS,
$HTTP_COOKIE_VARS,
$HTTP_SERVER_VARS,
$HTTP_SESSION_VARS;

echo "******HTTP_POST_VARS*****************<br>";
reset($HTTP_POST_VARS);
while(list($key, $value) = each($HTTP_POST_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******HTTP_GET_VARS*****************<br>";
reset($HTTP_GET_VARS);
while(list($key, $value) = each($HTTP_GET_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******HTTP_SESSION_VARS*****************<br>";
reset($HTTP_SESSION_VARS);
while(list($key, $value) = each($HTTP_SESSION_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******HTTP_ENV_VARS*****************<br>";
reset($HTTP_ENV_VARS);
while(list($key, $value) = each($HTTP_ENV_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******HTTP_COOKIE_VARS*****************<br>";
reset($HTTP_COOKIE_VARS);
while(list($key, $value) = each($HTTP_COOKIE_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******HTTP_SERVER_VARS*****************<br>";
reset($HTTP_SERVER_VARS);
while(list($key, $value) = each($HTTP_SERVER_VARS)) 
{ 
    echo "$key = $value<br>"; 
}

echo "******GLOBALS*****************<br>";
foreach ($GLOBALS as $key => $element)
    echo "$key  $element<br>\n"; 

}