How To Echo All $GLOBALS ?

developer_web

Folks,

Out of these followings, which is correct way to echo all $GLOBALs ?

<?php

$x5 = 9; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['x5'].
$y5 = 10; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['y5'].

echo "<pre>";
print_r($GLOBALS);
echo "</pre>";

?>

<?php

$x5 = 9; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['x5'].
$y5 = 10; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['y5'].

foreach($GLOBALS as $GLOBAL)
{
	echo "<pre>";
	print_r($GLOBAL);
	echo "</pre>";
}

?>

<?php

$x5 = 9; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['x5'].
$y5 = 10; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['y5'].

foreach($GLOBALS as $GLOBAL)
{
	echo "<pre>";
	echo $GLOBAL; echo '<br>';
	echo "<pre>";
}

?>

<?php

$x5 = 9; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['x5'].
$y5 = 10; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['y5'].

foreach($GLOBALS as $GLOBAL)
{
	echo $GLOBAL; echo '<br>';
}

?>

NogDog

Firstly, I wouldn't. I have never once used $GLOBALS in any PHP code I've ever written, nor seen anyone else use it (unless maybe as last-ditch debug code to try to figure out why something is failing?).

Secondly, if you forced me to with a gun to my head:

echo "<pre>".var_export($GLOBALS, true)."</pre>";

developer_web

NogDog

Never used var_export(). What does it do and why use that over the above 5 ?

developer_web

NogDog

Using your code, I get this error:
**Warning: var_export does not handle circular references in C:\xampp\htdocs\Templates\test.php on line 161

array (
'GET' =>
array (
),
'POST' =>
array (
),
'COOKIE' =>
array (
'PHPSESSID' => 'tsdktj0t5umjptqdbgi73fnje0',
),
'FILES' =>
array (
),
'GLOBALS' => NULL,
'x1' => 1,
'y1' => 1,
'z1' => 2,
'x2' => 2,
'y2' => 2,
'x5' => 9,
'y5' => 10,
'GLOBAL' => 4,
'z2' => 4,
)**

developer_web

Here is another one after the above 4.

<?php

$x5 = 9; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['x5'].
$y5 = 10; //'Global Variable' as outside function. It now exists in "Super Global" Variable array as: $GLOBALS['y5'].

foreach($GLOBALS as $GLOBAL)
{
	print_r($GLOBAL); echo '<br>';
}

?>

Which ones are absurd or wrong out of the 5 and why. Do explain that.

Thanks!