note 98811 modified in language.variables.scope by danbrown
| From: | danbrown@php.net | Date: | Fri, 09 Jul 2010 12:46:14 +0000 |
| Subject: | note 98811 modified in language.variables.scope by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-170816@lists.php.net to get a copy of this message | ||
Please note for using global variable in child functions:
This won't work correctly...
<?php
function foo(){
$f_a = 'a';
function bar(){
global $f_a;
echo '"f_a" in BAR is: ' . $f_a . '<br />'; // doesn't
work, var is empty!
}
bar();
echo '"f_a" in FOO is: ' . $f_a . '<br />';
}
?>
This will...
<?php
function foo(){
global $f_a; // <- Notice to this
$f_a = 'a';
function bar(){
global $f_a;
echo '"f_a" in BAR is: ' . $f_a . '<br />'; // work!, var is
'a'
}
bar();
echo '"f_a" in FOO is: ' . $f_a . '<br />';
}
?>
--was--
Please note for using global variable in child functions:
This won't work correctly...
<?php
function foo(){
$f_a = 'a';
function bar(){
global $f_a;
echo '"f_a" in BAR is: ' . $f_a . '<br />'; // doesn't
work, var is empty!
}
bar();
echo '"f_a" in FOO is: ' . $f_a . '<br />';
}
?>
This will...
<?php
function foo(){
global $f_a; // <- Notice to this
$f_a = 'a';
function bar(){
global $f_a;
echo '"f_a" in BAR is: ' . $f_a . '<br />'; // work!, var is
'a'
}
bar();
echo '"f_a" in FOO is: ' . $f_a . '<br />';
}
http://php.net/manual/en/language.variables.scope.php